Article
Green & Sustainable Science & Technology
Jing-Han Wang, Chi Li, Yong-Ping Xu, Shu-Ying Li, Jing-Song Du, Ya-Ping Han, Hong-Ying Hu
Summary: Globally intensified hazardous algal blooms pose threats to public health and ecosystems. River-lake water quality differences were studied from 2010 to 2015, showing that riverine pollutants, especially CODCr and nutrients, had significant impacts on lacustrine HABs. Water temperature and suspended solids were identified as positive correlation factors with HABs, while dissolved oxygen was a negative factor. Recommendations for lower nutrient limits in inflow rivers and Lake Dianchi were proposed to mitigate HABs in the lake.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Guangshun Bai, Xuemei Yang, Zhigang Kong, Jieyong Zhu, Shitao Zhang, Bin Sun
Summary: This paper proposes a comprehensive modeling and assessment process for landslide susceptibility, using the Dianchi Lake watershed as a case study. Fourteen high-accuracy and valid models were established, and the susceptibility zoning map predicted 80% of landslides in the very-high- and high-susceptibility areas.
Article
Soil Science
Denggao Fu, Zixuan Xu, Xiaoni Wu, Luoqi Zhao, Anqi Zhu, Changqun Duan, David R. Chadwick, Davey L. Jones
Summary: The study investigated the effects of different land-use types on soil P fractions and sorption-release characteristics in the eutrophic aquatic-terrestrial ecotone of Dianchi Lake. It found that different land use induced changes in soil P fractions and P stocks, with buffer zone soils showing higher P buffer capacity. However, despite the buffer capacity, there is still a high risk of soil P loss due to accumulation of available P in the soils.
SOIL & TILLAGE RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Mingqian Wu, Xiuming Zhang, Stefan Reis, Shengxiu Ge, Baojing Gu
Summary: To feed a growing population, the nitrogen input into global food production systems has exceeded the safe planetary boundary, causing adverse effects on the environment. A study conducted in the Lake Tai watershed using the CHANS model found that nitrogen input has increased and then decreased in recent years, while per capita nitrogen footprint has decreased. The dominant sources of nitrogen emissions have shifted from agricultural production to wastewater and nitrogen oxides emissions from fossil fuel combustion. Reducing the nitrogen footprint is important for effective nitrogen pollution control, with a focus on improving wastewater treatment techniques.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Studies
Qihao Wang, Dongya Liu, Feiyao Gao, Xinqi Zheng, Yiqun Shang
Summary: Conversion rule is a crucial aspect in cellular automata (CA) models, posing a significant challenge for both domestic and international experts. Traditional CA models often employ a single conversion rule for the entire study area, neglecting the unique growth characteristics of each location. In this study, a partitioned and heterogeneous land-use simulation model (PHLUS) is developed, integrating a CA and Markov model to enable land-use simulation at micro and macro scales.
Article
Ecology
Yisong Zhao, Kun Yang, Yi Luo, Zhenyu Yu
Summary: This study evaluates the response of lake surface water temperature (LSWT) by analyzing the variations in land surface temperature (LST) and LSWT of Dianchi Lake at multiple spatio-temporal scales. The results show that urbanization has a greater warming effect on LSWT than on LST, with a stronger effect at night. Areas with high human activity, including the eastern and northern coastal areas of the lake and heavily urbanized sub-basins, are warming faster. The study also finds a strong correlation between LST and LSWT, with a clear response in the outer buffer zone and consistent migration trajectory of the gravity center.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2022)
Article
Green & Sustainable Science & Technology
Hansheng Kong, Yilei Lu, Xin Dong, Siyu Zeng
Summary: The research established an integrated approach for evaluating the coupling coordination degree, with ten future scenarios designed to find the best balance between development and protection in the Dianchi Lake basin. The high protection-medium development scenario was identified as the most suitable for future planning, with economic growth control and non-point source governance deemed as the most effective approaches for improving coordination degree. The water quality model verified that the high protection-medium development scenario can reach the water quality target by 2025, highlighting the practical link between socio-economic development and environmental protection in the Dianchi Lake basin.
Article
Environmental Sciences
Zhuoya Zhang, Jiaxi Li, Yu Lu, Li Yang, Zheneng Hu, Changyuan Li, Xin Yang
Summary: Understanding the impact of land use and ecosystem services on sustainable development goals is crucial for achieving sustainable development. This study analyzed the temporal and spatial changes in ecosystem service value (ESV) in the Dianchi Lake Basin by using land use data and hot spot analysis. The results showed a decrease in forest land and degradation of high forest, leading to a decline in ESV. The study provides important insights for sustainable development and ecological construction in urbanized watersheds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Wenjun Zhong, Yue Dong, Shengrui Wang, Zhaokui Ni, Daishe Wu, Yulong Yang, Zeyu Deng
Summary: Land use change has a significant impact on the buffering capacity of watersheds, with decreases in agricultural land, grassland, and wetland and an increase in artificial land leading to a decrease in watershed P buffering capacity. Once the P retention threshold is exceeded, the contribution of land use to the buffering capacity decreases and the retention of phosphorus becomes more important. The decrease in watershed P buffering capacity is closely related to P loss in cultivated land, and wetland P removal provides a direction for restoring the buffering capacity.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geosciences, Multidisciplinary
Xuemei Chen, Xiaozhong Huang, Duo Wu, Jianhui Chen, Jiawu Zhang, Aifeng Zhou, John Dodson, Atun Zawadzki, Geraldine Jacobsen, Junqing Yu, Qingbai Wu, Fahu Chen
Summary: This study used pollen and other multi-proxy analyses to reconstruct the history of land use and ecosystem dynamics in central Yunnan Plateau. The results showed that human land use has impacted regional vegetation and landscape since 50 CE, while climate change has mainly influenced vegetation changes.
Article
Environmental Studies
Markos Mathewos, Semaria Moga Lencha, Misgena Tsegaye
Summary: This study evaluates the dynamics of land use and land cover in the Matenchose watershed and predicts future land use changes up to 2050. The results show an increase in cultivated land and settlements, and a decrease in forestland and grassland. The conversion of other land use categories to cultivated land has a detrimental effect on soil erosion, while forestland and grassland play a crucial role in reducing soil loss.
Article
Engineering, Civil
Yingxue Xuan, Guangli Liu, Yizhang Zhang, Yingjie Cao
Summary: River nitrate pollution is a global issue, with inputs from synthetic fertilizers, soil nitrogen, and domestic sewage contributing significantly. The study in the Beijiang River basin showed that external nitrate sources were the main cause of increased nitrate concentrations, while urbanization led to higher contributions of domestic sewage and increased nitrate pollution in mixed land use watersheds. Land use patterns play a crucial role in nitrate pollution management strategies.
JOURNAL OF HYDROLOGY
(2022)
Article
Green & Sustainable Science & Technology
Qiuju Wu, Renyi Yang, Zisheng Yang
Summary: The overall rationality of land use change in the Dianchi Basin is low, with major issues including reduction of high-quality cultivated land, degradation of woodland, and expansion of construction land. To achieve sustainable development, protection of these key land resources is crucial.
Article
Computer Science, Information Systems
Mahfuzur Rahman, Md. Monirul Islam, Hyeong-Joo Kim, Shamsher Sadiq, Mehtab Alam, Taslima Siddiqua, Md. Al Mamun, Md. Ashiq Hossen Gazi, Matiur Rahman Raju, Ningsheng Chen, Md. Alamgir Hossain, Ashraf Dewan
Summary: The study highlights the significant impact of rapid land cover changes and climate change on runoff patterns in Dhaka city. Using random forest algorithm, the researchers classified land cover and predicted future changes using cellular automata-artificial neural network model. The findings show that land cover changes led to increased monsoon runoff, emphasizing the complex interplay between urban dynamics and climatic shifts in shaping runoff patterns.
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2023)
Article
Environmental Sciences
Mohammed Feras Baig, Muhammad Raza Ul Mustafa, Imran Baig, Husna Binti Takaijudin, Muhammad Talha Zeshan
Summary: This study assesses land use and land cover changes in Selangor, Malaysia using GIS and remote sensing techniques, and predicts future trends. The results show an increase in developed, barren, and water lands, while agricultural, forest, and wetlands have decreased. The findings provide crucial knowledge for future sustainable planning and improving environmental and ecological conditions.
Article
Computer Science, Information Systems
Quanli Xu, Kun Yang, Shuangyun Peng, Liang Hong
ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
(2018)
Article
Geosciences, Multidisciplinary
Xu QuanLi, Yang Kun, Wang GuiLin, Yang YuLian
Article
Environmental Sciences
Xincheng Zhong, Quanli Xu, Junhua Yi, Lijuan Jin
Summary: This study proposes the concept of the relationship between landscape pattern and water quality threshold considering the spatial scale effect and uses various nonlinear regression models to quantitatively detect the thresholds of landscape pattern and water quality. The results have practical significance for water environment governance, landscape planning, and guiding the sustainable development of cities in the Dianchi Lake Basin.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biodiversity Conservation
Jing Liu, Quanli Xu, Junhua Yi, Xin Huang
Summary: Under conditions of rapid urbanization, it is important to quantitatively measure the expansion characteristics of urban landscapes and evaluate their spatial and temporal differentiation properties. The Multi-order Adjacency Index (MAI) is effective in measuring the quantitative characteristics of urban landscape expansion, but it cannot directly reflect the spatial heterogeneity of this expansion. This study combines MAI with a spatial heterogeneity detection method to measure and evaluate the spatiotemporal divergence features of urban landscape expansion in Chenggong District, Kunming City, Yunnan Province, China. The results show that MAI can reveal urban landscape expansion well at the micro-level, and the analysis indicates that it is mainly socio-economic factors that lead to the spatial heterogeneity of urban landscape expansion.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Shan Li, Quanli Xu, Junhua Yi, Jing Liu
Summary: The study proposed a comprehensive drought monitoring model considering terrain factors, and evaluated its effectiveness in detecting droughts in the winter and spring in Yunnan Province. The results showed that the model considering terrain factors had higher correlation coefficient and lower standard error compared to the model without considering terrain factors. The monitoring effect of the model considering terrain factors was more stable.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Wenhui Li, Quanli Xu, Junhua Yi, Jing Liu
Summary: This study developed a spatial prediction model of forest fires that considers the spatial scale effect of forest fire drivers, utilizing geographically weighted logistic regression (GWLR) for determining forest fire drivers and multi-scale geographically weighted regression (MGWR) for exploring the spatial scales of action of different drivers. The results showed that various factors such as meteorological, topographic, anthropogenic, and vegetation types were significantly correlated with forest fires in Yunnan Province, each with different spatial scales of influence.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Quanli Xu, A-Xing Zhu, Jing Liu
Summary: Cellular automata is an important model for simulating land-use change. This study proposes a method for determining the cellular unit based on land natural evolutionary unit (LNU) and shows that the LNU-based cellular automata model exhibits better spatial distribution consistency, higher simulation accuracy, and lower distortion compared to regular grid cellular automata.
Article
Ecology
Xiao Wang, Quanli Xu, Jing Liu
Summary: A new method based on geographic similarity is proposed for obtaining pseudo-absence data. The results show that this method can improve model accuracy and provide valuable insights into improving invasive plant distribution predictions.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Forestry
Quanli Xu, Wenhui Li, Jing Liu, Xiao Wang
Summary: Understanding the mechanisms and risks of forest fires through spatial prediction modeling is crucial for fire control. The quality of non-fire point data significantly affects the prediction performance of the model. This study proposes a sampling method based on geographical similarity to improve the quality of non-fire point samples.
Article
Environmental Sciences
Lijuan Jin, Quanli Xu, Junhua Yi, Xincheng Zhong
Summary: This study proposes an ecological security pattern construction method integrating CVOR-GWLR-Circuit model, which considers the exchange process of energy flow and information flow in the ecological process. Taking Yunnan Province as an example, the ecological security evaluation system is constructed and the ecological sources areas and corridors are identified. The research results provide a scientific basis for regional ecological protection planning and ecological corridors design.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)