Article
Engineering, Civil
Xinyue Hou, Wenke Wang, Zhan Wang, Zhitong Ma, Chunxing Guan, Dan Xi, Pei Li, Jie Li, Xinhui Huang
Summary: Arid inland regions around the world are facing severe water shortages and ecological crises due to climate change and human activities. This study evaluated the hydrogeological processes and hydrochemical effects in the Manas River catchment in China using multiple methods. The results showed a decrease in groundwater storage, reduced river infiltration, and increased concentrations of SO42- and Cl-. Over-exploitation of groundwater for irrigation led to storage depletion and altered flow paths, while expanding arable land and higher temperatures intensified evapotranspiration and salinization of shallow groundwater. The study suggests utilizing natural underground reservoirs and reducing arable land area to ensure sustainable water resources and ecology. The findings provide reference for the development of water resources and environmental protection in arid inland regions globally.
JOURNAL OF HYDROLOGY
(2022)
Article
Agronomy
Mohamed E. A. El-sayed, Mohamed Hazman, Ayman Gamal Abd El-Rady, Lal Almas, Mike McFarland, Ali Shams El Din, Steve Burian
Summary: The study evaluated the use of saline groundwater and soil amendments to enhance wheat production efficiency in Egypt. Results showed that biochar addition increased grain yield while saline water reduced it, indicating that biochar could alleviate salinity stress.
Article
Environmental Sciences
Manpreet Singh Mavi, Gurpreet Singh, Om Parkash Choudhary, Anmol Singh, Bharat Bhushan Vashisht, Karamjit Singh Sekhon, Neemisha Pathania, Bhupinderpal Singh
Summary: This study demonstrates that successive biochar application can significantly improve soil functions and increase above-ground biomass in soil irrigated with saline water. Furthermore, it highlights the important implications of long-term stabilization of biogenic carbon in mitigating climate change.
ENVIRONMENTAL RESEARCH
(2023)
Article
Agronomy
Shide Dong, Yaohu Kang, Shuqin Wan, Xiaobin Li, Junxia Miao
Summary: This study found that drip irrigation with saline water and freshwater both have positive effects on sustainable grain production, saving a significant amount of water compared to traditional flood irrigation. These methods also effectively reduce soil salinity levels, leading to increased sunflower yields and economic benefits.
Article
Engineering, Environmental
Ioannis D. Kampouris, Nikiforos Alygizakis, Uli Kluemper, Shelesh Agrawal, Susanne Lackner, Damiano Cacace, Steffen Kunze, Nikolaos S. Thomaidis, Jaroslav Slobdonik, Thomas U. Berendonk
Summary: The study found that long-term TWW irrigation did not increase the absolute abundance of 16S rRNA in GW, nor did it increase the relative abundance of TWW-related bacteria. Instead, it increased the relative abundance of sul1 and intI1 in the GW microbiome, leading to elevated concentrations of sulfonamide antibiotics in GW which correlated with sul1 relative abundance.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Hisham Eldardiry, Tian Zhou, Maoyi Huang, Oriana S. Chegwidden
Summary: This study investigates the impacts of groundwater pumping on the regulated streamflow in the Columbia River Basin (CRB). The results show that considering additional groundwater withdrawals can alleviate irrigation water deficit and increase streamflow during dry periods in certain locations. However, the implementation of groundwater withdrawal does not improve the overall model performance in long-term averaged streamflow and storage predictions.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Studies
Amanda M. Nelson, Nicolas E. Quintana Ashwell, Christopher D. Delhom, Drew M. Gholson
Summary: The challenge of depleting the Mississippi River Valley Alluvial Aquifer (MRVAA) requires reducing groundwater withdrawal for irrigation, increasing aquifer recharge, and protecting water quality for sustainable water use. The National Center for Alluvial Aquifer Research (NCAAR) uses big data to improve irrigation methods, provide farm management recommendations, and increase water use efficiency across the region.
Article
Engineering, Civil
Tamanna Kabir, Yadu Pokhrel, Farshid Felfelani
Summary: This study explores the groundwater mechanisms in the Mekong River Basin (MRB) and finds that groundwater recharge and discharge exhibit high spatial heterogeneity influenced by climate and subsurface characteristics. It is also found that irrigation pumping directly alters groundwater flows and storages, with climate variability smoothing the pumping effects over long times but causing region-wide groundwater depletion (up to 1 m/year) in the Mekong Delta during dry years. This research provides valuable insights into the evolving groundwater systems in the MRB and advances process-based groundwater modeling capabilities.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Kimberly J. Van Meter, Victor O. Schultz, Shuyu Y. Chang
Summary: Increases in nitrogen (N) contamination have occurred due to the application of fertilizer, livestock density, and population growth. The accumulation of nitrogen in groundwater within the Upper Mississippi River Basin (UMRB) has been estimated to be approximately 15 Tg. This highlights the significance of considering historical nitrogen when predicting future water quality.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Zaimin Wang, Zhaofeng Li, Hongbin Zhan, Sifu Yang
Summary: Water shortage and soil salinization are major constraints to sustainable agriculture in arid and semi-arid regions. This study investigates the impacts of long-term mulched drip irrigation with brackish groundwater on soil and groundwater environments. The results show that groundwater level decline reduces evaporation and groundwater recharge, while soil moisture content and salinity are strongly influenced by groundwater depth.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Thomas P. Higginbottom, Roshan Adhikari, Timothy Foster
Summary: The expansion of irrigated croplands has significantly boosted global agricultural productivity throughout the 20th century. However, limited progress has been made in sub-Saharan Africa due to under-delivery of irrigation schemes and policies. This study focuses on the Senegal River Valley, mapping the distribution of croplands under active irrigation between 1986 and 2020. The research reveals two distinct periods of irrigation development, with a stagnant phase until 2008 followed by a boom phase.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Abdoul Aziz Gning, Philippe Orban, Raymond Malou, Joost Wellens, Johan Derouane, Mansour Gueye, Serge Brouyere
Summary: An experimental study in the Senegal River Delta showed that irrigation significantly recharges the water table and dilutes soil and shallow groundwater salinity, but when irrigation is stopped, water level and salinity return to their initial levels within a month due to evaporative recovery.
Article
Agronomy
Monica Pinardi, Elisa Soana, Edoardo Severini, Erica Racchetti, Fulvio Celico, Marco Bartoli
Summary: This study analyzed the seasonal soil nitrogen budgets and dissolved inorganic nitrogen net export in the Mincio River sub-basin in Italy. The results showed seasonal differences in soil nitrogen budgets and no correlation between seasonal inorganic nitrogen loads transported by the river and soil nitrogen budgets.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Environmental Sciences
Amir Kiani, Kiomars Sharafi, Abdullah Khalid Omer, Behzad Karami Matin, Reza Davoodi, Borhan Mansouri, Houshmand Sharafi, Hamed Soleimani, Tooraj Massahi, Ehsan Ahmadi
Summary: This study aimed to investigate the impact of different irrigation sources on nitrate accumulation in vegetables and human health risks. Results showed that Gharasoo River water led to the highest nitrate accumulation in soil and vegetables. Consumption of Kermanshah-grown vegetables does not pose a health risk.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Shuhui Yin, Yuan Tian, Linsheng Yang, Qiqian Wen, Binggan Wei
Summary: The study revealed that the increase in salt-leaching irrigation and saline-alkali land area can impact the groundwater As concentration, with lower saline-alkali land area and higher salt-leaching irrigation area leading to a decrease in groundwater As concentration. An increase in saline-alkali land area contributes to higher groundwater As concentration.
Article
Environmental Sciences
Min Wang, Zhi Ding, Chaoyang Wu, Lisheng Song, Mingguo Ma, Pujia Yu, Bingqing Lu, Xuguang Tang
Summary: This study examined the ecosystem water-use efficiency (WUE) in karst and non-karst areas of Southwest China in response to seasonal droughts. The research found that the karst area had lower WUE compared to the non-karst area, with more severe impacts of drought, especially during summer and spring droughts. The study also highlighted the importance of understanding the coupling relationship between global carbon and water cycles in the face of increasing drought frequency and severity due to future climate change.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Zhi Ding, Hui Zheng, Ying Liu, Sidong Zeng, Pujia Yu, Wei Shi, Xuguang Tang
Summary: Large-scale ecosystem restoration projects in Southwest China, such as afforestation and grass planting, are major contributors to vegetation recovery. Despite covering less than 1% of the total area, these activities have a significant impact on the annual gross primary production (GPP) increase in the region.
Article
Multidisciplinary Sciences
Mei Zhang, Dianpeng Li, Xuyang Wang, Maidinuer Abulaiz, Pujia Yu, Jun Li, Xinping Zhu, Hongtao Jia
Summary: The conversion of natural grassland to artificial grassland alters the pattern of CO2 emissions from different soil aggregate fractions by reducing soil organic carbon and total nitrogen levels, thus affecting greenhouse gas emissions from alpine grasslands. These findings provide insights for developing strategies to mitigate greenhouse gas emissions in alpine grasslands.
Article
Ecology
Zhi Ding, Ying Liu, Lunche Wang, Yanan Chen, Pujia Yu, Mingguo Ma, Xuguang Tang
Summary: The study found that in the karst region of Southwest China, the ecosystem water use efficiency (WUE) is lower but increases faster than in the non-karst region. The positive impact of ecological restoration projects, such as afforestation, on WUE is significant in the karst ecosystem, effectively improving its function.
ECOLOGICAL ENGINEERING
(2021)
Article
Environmental Sciences
Yixuan Li, Pujia Yu, Licheng Shen
Summary: The study found that during the old-field succession in a karst valley, the diameter of soil aggregates increased and the fractal dimension decreased. The organic carbon content showed no significant change in the topsoil but decreased in the subsoil. The accumulation of organic carbon relied more on the increase in the number of larger aggregates.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Agronomy
Yanan Chen, Zhi Ding, Pujia Yu, Hong Yang, Lisheng Song, Lei Fan, Xujun Han, Mingguo Ma, Xuguang Tang
Summary: Efficient utilization of limited water resources and improving agricultural water use efficiency are major challenges for global food security. This study used carbon and water flux data from multiple site-years to analyze the variability in canopy-scale transpiration and ecosystem-scale evapotranspiration across major crops, including maize, winter wheat, and soybean. The results revealed seasonal patterns and differences among the crops in terms of transpiration and evapotranspiration, as well as water use efficiencies.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Pujia Yu, Yixuan Li, Shiwei Liu, Zhi Ding, Aichun Zhang, Xuguang Tang
Summary: Vegetation conversion induced by land degradation significantly influences soil organic carbon dynamics, affecting both labile and recalcitrant carbon fractions differently. Changes in land use under different vegetation degradation levels impact the content of total SOC and its fractions, but do not alter the stability of SOC in semi-arid areas.
Article
Forestry
Xuguang Tang, Jingfeng Xiao, Mingguo Ma, Hong Yang, Xing Li, Zhi Ding, Pujia Yu, Yongguang Zhang, Chaoyang Wu, Jing Huang, Julian R. Thompson
Summary: Karst ecosystems cover approximately 20% of Earth's land surface and have unique and vulnerable characteristics. This study examines vegetation productivity in global karst areas using satellite data. The results show a greening trend in most of the world's karst areas, with China and the EU leading in vegetation greening. China's grain-for-green program and deforestation in Brazil are major factors influencing these trends.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Environmental Sciences
Pujia Yu, Yixuan Li, Shiwei Liu, Jinlian Liu, Zhi Ding, Mingguo Ma, Xuguang Tang
Summary: Understanding the impact of land-use change on soil organic carbon (SOC) content and distribution in karst regions is important. This study compared soil samples from four different land-use types and found that afforestation significantly increased total SOC content, particularly in macro-aggregates. Stable carbon was the predominant fraction in the study area. The conversion of farmland to orange orchards was identified as the best choice to increase SOC sequestration in karst regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yuxi Luo, Yixuan Li, Shiwei Liu, Pujia Yu
Summary: This study assessed the impacts of vegetation succession on soil organic carbon dynamics in the Qingmuguan karst valley area. The results showed that different vegetation types had different total SOC content and storage, and SOC content, storage, and fractions decreased with increasing soil depth. The stability of SOC also varied among different vegetation types, with shrubland having the highest lability index and farmland having the lowest.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Environmental Sciences
Jinlian Liu, Shiwei Liu, Xuguang Tang, Zhi Ding, Mingguo Ma, Pujia Yu
Summary: This study analyzed the temporal and spatial variation characteristics of land surface temperature (LST) in the Yangtze River Basin. The results showed a fluctuating and rising trend in LST, with a faster increase at night time. The study also revealed the seasonal and spatial patterns of LST changes, as well as the influence of vegetation on LST. These findings improve our understanding of LST variations and highlight the importance of vegetation in mitigating temperature change.
Article
Oceanography
Zhi Ding, Fenzhen Su, Yanan Chen, Ying Liu, Xue Feng, Wenqiu Hu, Fengqin Yan, He Li, Pujia Yu, Xuguang Tang
Summary: Human activities have had a significant impact on the coastal landscape, altering the gradient pattern of coastal land use and causing environmental issues. This study focused on Manila Bay and analyzed the coastal land use sequence patterns between 1988 and 2016. The results showed that the dominant land use and cover types influenced the spatial pattern of the coastal land use. However, urban and aquaculture expansion led to intensified land use and a decrease in diversity of land use patterns along the sea-land direction.
ACTA OCEANOLOGICA SINICA
(2023)
Article
Environmental Sciences
Ying Liu, Zhi Ding, Yanan Chen, Fengqin Yan, Pujia Yu, Weidong Man, Mingyue Liu, He Li, Xuguang Tang
Summary: Large scale Ecosystem restoration projects have been implemented in China to restore vegetation and increase carbon stocks. This study analyzed the resistance of restored vegetation to extreme drought events (EDEs) by examining their changes in Gross Primary Productivity (GPP) and Water Use Efficiency (WUE). The results showed that the EDE in 2009/2010 had the longest duration and strongest severity, significantly suppressing GPP and WUE in both restored and natural vegetation. However, restored vegetation exhibited higher drought resistance compared to natural vegetation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Guo Li, Chaoyang Wu, Yanan Chen, Changping Huang, Yan Zhao, Yanan Wang, Mingguo Ma, Zhi Ding, Pujia Yu, Xuguang Tang
Summary: The shift in vegetation phenology is an important indicator of global climate change. Previous researches have explored the changes in the start and end of vegetation life events, but the peak photosynthesis timing (PPT) has not received much attention. This study systematically explored the spatio-temporal dynamics in PPT and its environmental controls in the boreal ecosystem during 2001-2019. The results showed that PPT mainly appeared in the first half of July, with a later appearance in northern North America compared to northern Eurasia, and an advanced trend in PPT during the last two decades.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yuxi Luo, Yixuan Li, Zhuoyue Leng, Jianbiao Rao, Dingyi Huang, Pujia Yu
Summary: The content and fractions of soil organic carbon are significantly influenced by land use and soil aggregate size, leading to changes in soil organic carbon content under different land use practices. Large aggregates contain more stable organic carbon fractions compared to micro aggregates.
FRESENIUS ENVIRONMENTAL BULLETIN
(2021)
