Influence of surface-water irrigation on the distribution of organophosphorus pesticides in soil-water systems, Jianghan Plain, central China

2021 ◽  
Vol 281 ◽  
pp. 111874
Author(s):  
Jianwei Wang ◽  
Yanguo Teng ◽  
Yuanzheng Zhai ◽  
Caixiang Zhang ◽  
Zhenzhen Pan ◽  
...  
2017 ◽  
Vol 19 (2) ◽  
pp. 161-172 ◽  
Author(s):  
Yao Du ◽  
Teng Ma ◽  
Yamin Deng ◽  
Shuai Shen ◽  
Zongjie Lu

Ammonium is of anthropogenic, natural and mixed origin in surface water, aquifer and intermediate aquitard between them, respectively, within the Yangtze River Basin.


2018 ◽  
Vol 26 (4) ◽  
pp. 1047-1059 ◽  
Author(s):  
Yao Du ◽  
Teng Ma ◽  
Yamin Deng ◽  
Shuai Shen ◽  
Zongjie Lu

1993 ◽  
Vol 27 (5-6) ◽  
pp. 61-67 ◽  
Author(s):  
E. Jacobs ◽  
J. W. van Sluis

The surface water system of Amsterdam is very complicated. Of two characteristic types of water systems the influences on water and sediment quality are investigated. The importance of the sewer output to the total loads is different for both water systems. In a polder the load from the sewers is much more important than in the canal basin. Measures to reduce the emission from the sewers are much more effective in a polder. The effect of these measures on sediment quality is more than the effect on water quality. Some differences between a combined sewer system and a separate sewer system can be found in sediment quality.


Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 471
Author(s):  
Bo Mu ◽  
Guohang Tian ◽  
Gengyu Xin ◽  
Miao Hu ◽  
Panpan Yang ◽  
...  

An understanding of the scientific layout of surface water space is crucial for the sustainable development of human society and the ecological environment. The objective of this study was to use land-use/land-cover data to identify the spatiotemporal dynamic change processes and the influencing factors over the past three decades in Henan Province, central China. Multidisciplinary theories (landscape ecology and graph theory) and methods (GIS spatial analysis and SPSS correlation analysis) were used to quantify the dynamic changes in surface water pattern and connectivity. Our results revealed that the water area decreased significantly during the periods of 1990–2000 and 2010–2018 due to a decrease in tidal flats and linear waters, but increased significantly in 2000–2010 due to an increase in patchy waters. Human construction activities, socioeconomic development and topography were the key factors driving the dynamics of water pattern and connectivity. The use of graph metrics (node degree, betweenness centrality, and delta probability of connectivity) in combination with landscape metrics (Euclidean nearest-neighbor distance) can help establish the parameters of threshold distance between connected habitats, identify hubs and stepping stones, and determine the relatively important water patches that require priority protection or development.


2014 ◽  
Vol 138 ◽  
pp. 81-93 ◽  
Author(s):  
Yiqun Gan ◽  
Yanxin Wang ◽  
Yanhua Duan ◽  
Yamin Deng ◽  
Xinxin Guo ◽  
...  

Author(s):  
Rongrong Zhuo ◽  
Mark Rosenberg ◽  
Bin Yu ◽  
Xinwei Guo ◽  
Mingjie Wang

This article aims to contribute to the relationship between accessibility of rural life space and rural livelihood capital and transitions in rural central China. Employing data produced from a household survey, we developed a composite index for accessibility of rural life space incorporating spatial and temporal attributes of a household’s daily activities and then explored the mediation effect of rural livelihood capital and transitions on accessibility. Results revealed a pattern of diversification in terms of life space accessibility undertaken for daily activities across households. Both livelihood capital and transitions had significant mediation effects on the relationship between socio-economic characteristics of rural households and accessibility of rural life space. The effects of livelihood capital on livelihood transitions also influenced the path on rural households’ accessibility of rural life space. One of the implications of this article is to link rural transformation to the context of urbanization and rural access issues from a perspective of daily activity, and then to figure out the best method for rural development policy and service planning.


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