Optimization of management strategies for reducing nitrogen loading in China

Hua，Shanshan1,2; He，Xin3; Zheng，Chunmiao2

2020-02-10

10.1016/j.scitotenv.2019.134620

SCIENCE OF THE TOTAL ENVIRONMENT   影响因子和分区

0048-9697

1879-1026

Terrestrial Nitrogen (N) loading in the environment has seen a steady increase over the past several decades as a result of more intensive anthropogenic activities. Quantifying N loading for an extended period is important for effective N management. In this study, a statistical model is constructed to describe the relationship between N loading and anthropogenic activities at watershed scale for 211 watersheds covering the entire land area of China. Subsequently, a portfolio optimization model is used to optimize the future management efforts of the long-term N loading. Our results show that N loading in China due to anthropogenic activities has increased significantly over the past 60 years (1949–2010), with the rate of increase at approximately 1 Tg N/year. When designing future N loading management strategies, the next 30 years is divided into three temporal stages and assume that the total amount of expenditure is fixed. The results of portfolio optimization analysis show that the best allocations of management efforts (e.g. capital investments, making new policies, improving technology, or alike) among three temporal stages are 28.55% (2021–2030), 71.45% (2031–2040) and 0 (2041–2050). Furthermore, it is suggested that the future population growth scenario has the largest influence on the results of the portfolio optimization analysis.

China Nitrogen loading Portfolio optimization Water pollution Watershed management

SCI ; EI

英语

通讯

[2016YFC0402806] ; National Natural Science Foundation of China[41701042]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000505924300125

Elsevier B.V.

20194907795906

Financial data processing ; Investments ; Nitrogen ; Population statistics ; Soil conservation ; Water conservation ; Water management ; Water pollution ; Watersheds

Water Resources:444 ; Surface Water:444.1 ; Water Pollution:453 ; Soils and Soil Mechanics:483.1 ; Materials Handling Methods:691.2 ; Chemical Products Generally:804

ENVIRONMENT/ECOLOGY

2-s2.0-85075879594

Scopus

1.School of Environment and Energy,Peking University,Shenzhen,518055,China
2.State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Water Resources,China Institute of Water Resources and Hydropower Research,Beijing,100038,China

Hua，Shanshan,He，Xin,Zheng，Chunmiao. Optimization of management strategies for reducing nitrogen loading in China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,703.

Hua，Shanshan,He，Xin,&Zheng，Chunmiao.(2020).Optimization of management strategies for reducing nitrogen loading in China.SCIENCE OF THE TOTAL ENVIRONMENT,703.

Hua，Shanshan,et al."Optimization of management strategies for reducing nitrogen loading in China".SCIENCE OF THE TOTAL ENVIRONMENT 703(2020).