Spatial-Temporal Dynamics of Anthropogenic Nitrogen Inputs in the Rapid Developing Chaohu Lake Basin
نویسندگان
چکیده
Due to the agricultural and industrial activities in rapidly urbanized basins, nitrogen (N) inputs have increased significantly, causing a variety of environmental issues. These challenges require an accurate assessment contributions driving factors, particularly Chaohu Lake Basin, which faces double pressures urban expansion production. The research shows: (1) From 1990 2018, trajectory net anthropogenic N (NANI) exhibited three-stage pattern (uptrend stage, fluctuation downtrend stage), with average value 13,482 kg km−2 year−1. primary source was fertilizer application, made up approximately 79% NANI. Human food animal feed imports, biological fixation, atmospheric deposition composed 8%, 6%, respectively. (2) Rapid urbanization enhanced NANI short time stage. However, long-term analysis had shown declining trend inputs, indicating that could improve efficiency introduce cleaner energy sources. (3) watersheds were estimated at 20,700 year−1, 3.4 times higher than watersheds. Fertilizer application used watersheds, as well human imports. Urbanization drove input mainly but no influence mixed Since basins main it crucial support management efforts reduce pollution.
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ژورنال
عنوان ژورنال: Water
سال: 2023
ISSN: ['2073-4441']
DOI: https://doi.org/10.3390/w15030414