[1]ZHANG Yan,GAO Xiang,ZHANG Hong.Distinguishing Influence of Agriculture Activities in Each District of Wuxi on Phosphorus and Nitrogen in Taihu Lake[J].Research of Soil and Water Conservation,2013,20(06):37-43.
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Distinguishing Influence of Agriculture Activities in Each District of Wuxi on Phosphorus and Nitrogen in Taihu Lake
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
20
Number of periods:
2013 06
Page number:
37-43
Column:
Public date:
2013-12-28
- Title:
- Distinguishing Influence of Agriculture Activities in Each District of Wuxi on Phosphorus and Nitrogen in Taihu Lake
- Keywords:
- water quality; surplus fertilizer; elimination method; time lag; Taihu Lake
- CLC:
- X524;X24
- DOI:
- -
- Abstract:
- In order to discuss the association between the concentrations of total phosphorus (CTP) and of total nitrogen (CTN) in Taihu Lake and the resources input in the agriculture of each district of Wuxi and to distinguish the main districts agriculture sources of phosphorus and nitrogen, two factors, the surplus fertilizer and the effective irrigation area are selected. In order to calculate the surplus fertilizer a new method combined with Technique for Order Preference by Similarity to Ideal Solution method is designed. Furthermore, the multi-analysis method and the elimination method were used. The results indicate that owing to the excessive chemical fertilizer application and/or the inefficient fertilizer utilization, the quantities of surplus fertilizer in Yixing and Districts of Wuxi are larger. Under acting together by the material resources and the transmissive motivity, the agriculture activities in Districts of Wuxi and Yixing have the great influence on the water quality of Taihu Lake. However, owing to lack of enough transmissive motivity although a large surplus fertilizers in the agriculture activities of Yixing and Districts of Wuxi are produced, the surplus fertilizer of Yixing has less influence on Wuli Lake and that of Districts of Wuxi has less influence on Western bank of Taihu Lake. And owing to no material source the influence of the surplus nitrogen fertilizer in Jiangyin on CTN of Wuli Lake and of Meiliang Lake is excluded.
- References:
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