摘要
文章运用土壤通用流失方程(USLE)研究了杭州湾南岸农业生态系统的土壤保持功能,并评价了其经济价值。研究表明,由林地、水田和旱地组成的杭州湾南岸农业生态系统的土壤保持量为5.67×105t/a,其经济价值为20.35×105元/a,其中减少土壤废弃的经济价值为12.33×105元/a,保持土壤养分价值为4.92×105元/a,减少泥沙淤积价值为3.10×105元/a。
<Abstrcat>Based on the Universal Soil Loss Equation (USLE), the authors analyse the function for soil conservation of agro-ecosystems and its eco-economic value in south coast of Hangzhou bay. The results indicate that the quantity of soil conservation in research area is 5.67×10~5 t/a. The total economic value of soil conservation was estimated to be 20.35×10~5 yuan/a.The economic value of reduction of soil disuse, protection of soil fertility and decrease of soil deposit are 12.33×10~5 yuan/a, 4.92×10~5 yuan/a and 3.10×10~5 yuan/a, respectively.
出处
《水土保持研究》
CSCD
北大核心
2005年第4期202-205,共4页
Research of Soil and Water Conservation
基金
宁波市社科规划课题(G2004A11)
宁波市科技局项目(2002C10026)
浙江省社科联年度课题(03N55)
