Abstract:Comprehensive index was used to assess the potential risk of soils from submerged area in Danjiangkou reservoir through field investigation and indoor simulation experiments. The results showed that the background content of soil total nitrogen was 0.3~3.8g/kg, and its average was 1.1g/kg. The background content of soil total phosphorus was 0.2~2.4g/kg, and its average was 0.8g/kg. The contents of nitrogen and phosphorus were mainly concentrated in Danjiangkou reservoir tributaries, and the content of new submerged area was low. The content of soil dissolved total nitrogen was 0.2~11.8mg/L, and soil dissolved total phosphorus was 0.006~2.2mg/L. The average of soil dissolved total nitrogen; total phosphorus was 4.1, 0.3mg/L, respectively. The spatial distribution of soil dissolved nitrogen, phosphorus and the background values of soil nitrogen, phosphorus was similar. The proportion that the area of the risk assessment level from low to high accounted for the entire new submerged area was 3.3%, 21.2%, 56.9%, 15.9%, and 2.7%. Most of the new submerged area was low risk level, and high risk area was mainly concentrated in the tributary area of Danjiangkou Reservoir, which was required a focus in eco-environmental governance.
王剑, 尹炜, 赵晓琳, 仰满, 段诚, 朱惇, 史志华. 丹江口水库新增淹没区农田土壤潜在风险评估[J]. 中国环境科学, 2015, 35(1): 157-164.
WANG Jian, YIN Wei, ZHAO Xiao-Lin, YANG Man, DUAN Cheng, ZHU Dun, SHI Zhi-Hua. The potential risk evaluation of farmland soil from new submerged area in Danjiangkou Reservoir. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(1): 157-164.