Article
Environmental Sciences
Shuaiyang Qi, Huaiqing Zhang, Meng Zhang
Summary: This research utilizes a new vegetation index based on radial basis function (RBF) to estimate the net primary productivity (NPP) of Chinese terrestrial ecosystems over the past two decades (2001-2020) and investigates the spatiotemporal variation characteristics of NPP and its driving mechanisms. The kernel vegetation index (kNDVI) effectively alleviates saturation issues and improves the accuracy of NPP estimation compared to NDVI. The study finds that changes in NPP are mainly influenced by precipitation, with dominant factors varying over time and having different impacts.
Article
Ecology
Qing Ye, Wenzhong Feng, Gengying Jiao, Wenping Deng
Summary: This study analyzed the drought conditions in subtropical China and estimated the impact of drought on forest net primary productivity using a model. The results showed that drought events during 2000-2015 led to a mean decline of 7.2% in forest net primary productivity. Moderate or severe drought had a more significant effect compared to extremely severe drought. The study suggests that forest managers and local governments should focus on areas with moderate and severe drought events and take measures to prevent a decline in net primary productivity within 2 years after drought.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Engineering, Civil
Ting Zhang, Junzhi Zhou, Ping Yu, Jianzhu Li, Yanfu Kang, Bo Zhang
Summary: Drought, caused by global warming, is becoming more frequent and is a main factor leading to the loss of terrestrial ecosystems gross primary productivity (GPP). Sun-induced chlorophyll fluorescence (SIF) has been found to be a more accurate and sensitive indicator of vegetation drought and drought-induced GPP variations compared to normalized difference vegetation index (NDVI) and enhanced vegetation index (EVI). SIF is an effective tool for timely detection of regional drought and ecosystem management.
JOURNAL OF HYDROLOGY
(2023)
Article
Geosciences, Multidisciplinary
Lei Tian, Baoqing Zhang, Pute Wu
Summary: This study presents a global monthly drought dataset based on a multitype and multiscalar drought index incorporating snow dynamics. The dataset demonstrates good performance in distinguishing different types of drought across various timescales and spatial scales. The consideration of snow processes improves the capability of the drought index, especially in snow-covered high-latitude and high-altitude areas. The dataset provides valuable information for monitoring, assessing, and characterizing drought events globally.
EARTH SYSTEM SCIENCE DATA
(2022)
Article
Biodiversity Conservation
Yangyang Liu, Ronglei Zhou, Hanyu Ren, Wei Zhang, Zhixin Zhang, Zhaoying Zhang, Zhongming Wen
Summary: This study evaluated the spatiotemporal dynamics of grassland NPP and its prominent climate-controlling factors in China from 1982 to 2016. Results showed a decreasing trend of grassland NPP from southeast to northwest spatially, and a significant increasing trend over the whole study period temporally. The temperature was found to be a dominant driver in NPP variations for certain types of grasslands, while precipitation played a key role in others.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Ecology
Yujia Liu, Jianghua Zheng, Jingyun Guan, Wanqiang Han, Liang Liu
Summary: Xinjiang grasslands are crucial for regulating the carbon cycle and maintaining ecosystem stability. Droughts, caused by global warming, pose a significant threat to grassland net primary productivity (NPP). This study used the CASA model to simulate NPP in Xinjiang grasslands from 1982 to 2020 and analyzed the spatial and temporal variability of NPP and drought using statistical methods. The research found that NPP has been increasing overall, with the highest values during the growing season. Droughts had varying effects on NPP, with the strongest concurrent effect observed in plain grasslands and the weakest effect in alpine subalpine grasslands. The study also identified lagged effects of drought on NPP in different grassland types. This research provides a reliable theoretical basis for regional sustainable development.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Multidisciplinary Sciences
Changhong Liu, Cuiping Yang, Qi Yang, Jiao Wang
Summary: Drought in Sichuan Province shows differences in characteristics between different physiognomy types, with increasing intensity in the western region mainly concentrated in the Sichuan basin. Altitude is not the main factor causing spatial unevenness of precipitation in Sichuan Province, as altitude, temperature, longitude, and latitude jointly determine precipitation distribution.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Zhenyu Zhang, Weimin Ju, Yanlian Zhou
Summary: Net primary productivity (NPP) in Northwest China showed an increasing trend during the study period, with water stress identified as a key factor limiting NPP. However, the impact of water stress on NPP changes with elevation, with the strongest negative impact seen at around 2000 m and a positive correlation at elevations above 5000 m. Elevation gradients significantly affect the relationship between NPP and water stress in dryland ecosystems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Water Resources
Yuliang Zhou, Ping Zhou
Summary: Understanding the spatiotemporal characteristics of drought events and their impacts on NPP is crucial for drought mitigation and environmental protection. This study in the Pearl River basin showed that most severe drought events lasted more than 3 months, with total NPP loss significantly correlated with drought severity and intensity, such as the 2011 drought reducing NPP by 11.7% in the region.
HYDROLOGY RESEARCH
(2021)
Article
Engineering, Civil
Xiaowei Yin, Yiping Wu, Wenzhi Zhao, Shuguang Liu, Fubo Zhao, Ji Chen, Linjing Qiu, Wenke Wang
Summary: Understanding the impact of high-altitude flash droughts on vegetation net primary productivity (NPP) is crucial for ecosystem management. In this study, we investigated the response of NPP to flash drought in the Qilian Mountains. The results showed a significant increase in flash drought intensity, with a negative response in 64.3% of the region. Furthermore, the study revealed the coupling between NPP and temperature/VPD under different drought intensities, highlighting the effects of temperature anomalies and VPD on NPP.
JOURNAL OF HYDROLOGY
(2023)
Article
Engineering, Civil
Hua Bai
Summary: This paper improves the prediction ability of the standardized precipitation evapotranspiration index (SPEI) for drought by using marginal and joint distribution functions. The new-constructed SPEIC shows highly consistent results with SPEI in energy-and water-limited regions of China.
JOURNAL OF HYDROLOGY
(2022)
Article
Multidisciplinary Sciences
Renping Zhang, Jing Guo, Gang Yin
Summary: The study found that in most regions of Xinjiang, the start of the growing season was earlier and the end of the growing season was delayed, leading to an increase in the length of the growing season. The changes in grassland NPP and length of the growing season were related to precipitation levels and regional temperatures.
Article
Environmental Sciences
Xiaomeng Guo, Siqin Tong, Jinyuan Ren, Hong Ying, Yuhai Bao
Summary: This study found an increasing trend in NPP on the Mongolian Plateau from 1982 to 2014, while drought intensity was also on the rise. The decrease in NPP and SPEI in Mongolia was larger than that in Inner Mongolia, and vegetation showed different responses to SPEI in different seasons.
Article
Biodiversity Conservation
Hang Yu, Long Wang, Jianlong Zhang, Yuanfang Chen
Summary: Climate change has increased the risk of drought globally. This study developed a multi-scale global drought aridity index (GDAI) based on the principle of standardized precipitation evapotranspiration index (SPEI). The GDAI showed strong correlation coefficients with aridity index (AI) and SPEI, indicating its effectiveness in revealing global aridity and capturing temporal drought change characteristics. Additionally, the GDAI outperformed SPEI in accurately evaluating drought at a 3 month time scale.
ECOLOGICAL INDICATORS
(2023)
Article
Green & Sustainable Science & Technology
Jiwei Sun, Shuoben Bi, Bashar Bashir, Zhangxi Ge, Kexin Wu, Abdullah Alsalman, Brian Odhiambo Ayugi, Karam Alsafadi
Summary: Against the backdrop of global climate change, this study examines the dynamics of drought characteristics in China from 1951 to 2020. Precipitation data from 700 meteorological stations were analyzed using SPI-12 and SPEI-12 to detect drought characteristics. The findings reveal that drought-prone areas in China are expanding, with the most severe drought event occurring in 2010-2011. The frequency of drought occurrence gradually decreases from south to north, but areas with less frequent droughts experience longer and more severe drought durations.
Article
Forestry
Fengsong Pei, Yi Zhou, Yan Xia
Summary: Remote sensing has been used to monitor extreme climatic events, particularly droughts, on a regional to global scale by identifying vegetation activity anomalies. However, limited research has focused on the performance of remote sensing in detecting extreme precipitation events. This study in the Middle and Lower Reaches of the Yangtze River in China found that the maximum NDVI is better suited to capture the response of vegetation to extreme precipitation events.
Article
Geography
Congxiao Wang, Bailang Yu, Zuoqi Chen, Yan Liu, Wei Song, Xia Li, Chengshu Yang, Christopher Small, Song Shu, Jianping Wu
Summary: This study uses satellite images to quantitatively detect and characterize the evolution of urban spatial clusters (USCs) over time. By analyzing the dynamic minimum spanning tree (DMST) and subgraph partitioning method, the research identifies evolving USCs, including newly emerging, single-core, and multicore clusters. The study finds that large-sized USCs have greater development than medium- and small-sized USCs, with clear directionality and heterogeneity observed in the expansions of the ten largest USCs.
ANNALS OF THE AMERICAN ASSOCIATION OF GEOGRAPHERS
(2022)
Article
Geochemistry & Geophysics
Xiaocong Xu, Xiaoping Liu, Xia Li, Qian Shi, Yimin Chen, Bin Ai
Summary: In this study, an improved global snow depth retrieval algorithm was proposed to address the biases and uncertainties in the current algorithms based on spaceborne microwave measurements. The algorithm utilized machine learning and temperature gradient characteristics to indirectly estimate snow depths. A zoning and multitemporal modeling strategy was applied to reduce the bias and uncertainty caused by snow heterogeneity. The results showed promising accuracy and stability in different ecoregions compared to the existing products.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geography
Yuxia Wang, Xia Li, Xin Yao, Shuang Li, Yu Liu
Summary: This study introduces a family of improved gravity models by incorporating city industry structure proximity, complementarity, and diversities, which significantly enhance the accuracy of predicting population migration patterns, especially in eastern China. The best model outperforms the benchmark model by 24.6 percent in mean absolute percentage error, showing better prediction accuracies for flows with high intensities and long distances. This research broadens existing understanding by integrating city industry structure features into the gravity model.
ANNALS OF THE AMERICAN ASSOCIATION OF GEOGRAPHERS
(2022)
Article
Geography
Dongmei Tang, Xia Li, Xiaocong Xu, Xiaoping Liu, Han Zhang, Hong Shi, Shuwen Liu
Summary: The implementation of the Belt and Road initiative has a significant positive effect on consumption-based CO2 emissions in participating countries, but no significant effect on production-based CO2 emissions. Non-Belt and Road countries that consume CO2-embedded products should take responsibility for the CO2 emissions in Belt and Road countries.
ANNALS OF THE AMERICAN ASSOCIATION OF GEOGRAPHERS
(2022)
Article
Multidisciplinary Sciences
Guangzhao Chen, Xia Li, Xiaoping Liu
Summary: This study presents a global land projection dataset with a 1-km resolution that comprises 20 land types for 2015-2100, adopting the latest IPCC coupling socioeconomic and climate change scenarios, SSP-RCP. The dataset was produced using a combination of top-down land demand constraints and bottom-up spatial simulation. The results show satisfactory accuracy and the dataset provides powerful support for environmental impact assessment and climate research.
Article
Multidisciplinary Sciences
Meng Luo, Guohua Hu, Guangzhao Chen, Xiaojuan Liu, Haiyan Hou, Xia Li
Summary: In the past decades, China has experienced significant land use/land cover changes, with expectations for continued impact on the environment in the future. Efforts have been made to project future changes in LULC following specific pathways for sustainability. A new high-resolution LULC dataset has been developed for China under 24 scenarios, providing a valuable alternative for research in earth system modeling, ecosystem services, and carbon neutrality.
Article
Engineering, Environmental
Xiaojuan Liu, Jinbao Zhang, Han Zhang, Dongmei Tang, Guohua Hu, Xia Li
Summary: China's interprovincial trades pose significant threats to biodiversity, but there is a lack of public awareness regarding their responsibility for biodiversity loss. Expanding national-level nature reserves may effectively increase public awareness and help to reverse the trend of biodiversity loss.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Zutao Ouyang, Pietro Sciusco, Tong Jiao, Sarah Feron, Cheyenne Lei, Fei Li, Ranjeet John, Peilei Fan, Xia Li, Christopher A. Williams, Guangzhao Chen, Chenghao Wang, Jiquan Chen
Summary: The replacement of natural lands with urban structures has led to a decrease in albedo, contributing to global warming. Future urban land expansion without proper mitigation will further exacerbate this effect.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Haiyan Hou, Bing-Bing Zhou, Fengsong Pei, Guohua Hu, Zhongbo Su, Yijian Zeng, Han Zhang, Yukun Gao, Meng Luo, Xia Li
Summary: The anthropogenic land use/land cover change significantly affects terrestrial gross primary productivity (GPP) and leads to a decline in global terrestrial GPP in the 21st century. The contribution of LULC changes to GPP dynamics varies across different time periods and regions, but becomes trivial when the CO2 fertilization effect is incorporated into the model.
Article
Multidisciplinary Sciences
Bin Sun, Yonglong Lu, Yifu Yang, Mingzhao Yu, Jingjing Yuan, Ran Yu, James M. Bullock, Nils Chr Stenseth, Xia Li, Zhiwei Cao, Haojie Lei, Jialong Li
Summary: Cities have an impact on the distribution of bird species, with threatened bird hotspots overlapping greatly with urbanized areas, where only a small percentage of preferred land cover is found. While green infrastructure can improve local bird diversity, the homogeneity of urban environments results in similar species compositions across regions. Narrow-range species should be prioritized in biodiversity conservation strategies, and global coordination of conservation actions among cities is necessary.
Article
Multidisciplinary Sciences
Xia Li, Guangzhao Chen, Yongping Zhang, Le Yu, Zhenrong Du, Guohua Hu, Xiaojuan Liu
Summary: Systematic studies show that there are uncertainties when using global LULC products, especially with coarser resolutions, which can distort urban features. Additionally, most of these products underestimate crop production losses.
Article
Environmental Sciences
Xiaoping Liu, Renyun Guo, Xiaocong Xu, Qian Shi, Xia Li, Haipeng Yu, Yu Ren, Jianping Huang
Summary: The planet is expected to become drier due to global warming, which poses significant challenges to terrestrial species. However, the understanding of the impact of future aridity on biodiversity is limited. This study predicts the future dynamics of vertebrate biodiversity loss driven by increasing aridity, showing that a large proportion of assemblages and species will be exposed to unprecedented aridity conditions by 2100. The findings emphasize the need for early and effective response to mitigate ecological disruption.
Article
Geography
Han Zhang, Bing-Bing Zhou, Shuwen Liu, Guohua Hu, Xing Meng, Xiaojuan Liu, Hong Shi, Yukun Gao, Haiyan Hou, Xia Li
Summary: With the patient-mobility policy and intercity transportation in China, interprovincial patient mobility has become important, but its impact on high-quality healthcare delivery is still unknown. This study analyzed the accessibility of township-level divisions to tertiary hospitals in various patient-mobility scenarios considering different transportation systems. The results showed that high-speed rail had the largest influence on high-quality healthcare utilization, while air transport was insignificant. High-speed rail can promote equitable distribution of healthcare, reducing the Gini index and urban-rural disparity in accessibility.
Article
Development Studies
Yuxia Wang, Xingyu Chi, Danfei Zhong, Can Xu, Zhuoqun Du, Xin Yao, Xia Li
Summary: Poverty is a severe global problem and eliminating it is a top priority in the Sustainable Development Goals. Understanding the key contributors to poverty reduction is crucial for effective policy intervention. This study investigates the spatial determinants of poverty eradication in China and finds that urbanization level and commercial development play significant roles, while the rapid growth of the catering industry is the major factor in poverty elimination. The analysis enhances our understanding of poverty identification and elimination, providing a solid example for other developing countries.
HABITAT INTERNATIONAL
(2023)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
