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当前位置: 首页 > 文章 > 侵蚀对苏南丘陵区非耕作土土壤质量的影响 水土保持研究 2003,10 (4) 175-178
Position: Home > Articles > Soil Erosion Impact on Soil Fertility of Uncultivated Soil in the South Jiangsu Province Research of Soil and Water Conservation 2003,10 (4) 175-178

侵蚀对苏南丘陵区非耕作土土壤质量的影响

作  者：
张燕;杨浩;张洪;彭补拙
单  位：
南京大学城市与资源学系;中国科学院南京土壤研究所开放实验室
关键词：
土壤侵蚀;137Cs丢失量;土壤粗化;土壤养分减少;土壤质量退化
摘  要：
只要具备适宜的条件,土壤侵蚀就会发生,苏南丘陵区也不例外。以137Cs示踪法进行的研究表明,尽管植被覆盖良好,自然状态下的苏南坡地非耕作土上仍有土壤侵蚀发生。虽因地貌、气候等条件使这里的土壤净流失量不大,可是侵蚀还是引起土壤颗粒粗化,且主要丢失的是粉粒;并使土壤中有机质、全氮、全磷含量减少,即造成土壤质量退化。此外,当地土壤肥沃,侵蚀及伴随的养分流失产生的异地生态损害亦不容忽视。
译  名：
Soil Erosion Impact on Soil Fertility of Uncultivated Soil in the South Jiangsu Province
作  者：
ZHANG Yan1, YANG Hao1, ZHANG Hong2, PENG Buzhuo2(1.LMCP, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, China; 2.Department of Urban and Resources Science, Nanjing University, Nanjing 210093, China)
关键词：
soil erosion;137Cs loss;soil coarseness; nutrients decrease;soil quality degradation
摘  要：
137Cs tracer method was used to investigate soil erosion intensity. It indicated that although the plant cover in sloping land of the south Jiangsu Province is well, there still was soil erosion in uncultivated soils. Soil erosion is not serious because of favorable condition of landform and climate. At the mean time soil particlesize distribution, contents of soil organic matter, total nitrogen, total phosphorus were measured to analyze the erosion effect on the physical and chemical properties of eroded soils. The results indicated that soil erosion would lead to soil particle coarseness. And the loss soil particles due to erosion were mainly silt. Moreover, the erosion may also caused soil nutrients decrease in the eroded soil. That is, the erosion would accelerate soil fertility degradation. Besides the erosion impacted on onsite soil fertility the loss of soil nutrient would threaten the water ecological environment in this area. Therefore, in order to overcome soil fertility degradation and its offsite ecological damage it is necessary to control soil erosion. 

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