LI Jia-lin,TONG Yi-qin,YANG Xiao-ping,et al.Soil Conservation of Agro-ecosystems and Its Eco-economic Value in South Coast of Hangzhou Bay[J].Research of Soil and Water Conservation,2005,12(04):202-205.
杭州湾南岸农业生态系统土壤保持功能及其生态经济价值评估
- Title:
- Soil Conservation of Agro-ecosystems and Its Eco-economic Value in South Coast of Hangzhou Bay
- Keywords:
- soil erosion; soil conservation; USLE; south coast of Hangzhou bay
- 分类号:
- S157;S181
- 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。
- Abstract:
- 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× 105 t/a.The total economic value of soil conservation was estimated to be 20.35× 105 yuan/a.The economic value of reduction of soil disuse, protection of soil fertility and decrease of soil deposit are 12.33× 105 yuan/a, 4.92× 105 yuan/a and 3.10× 105 yuan/a, respectively.
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备注/Memo
收稿日期:2004-9-24
基金项目: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）
作者简介:李加林（1973- ），男，浙江台州人，博士后，主要从事全球变化信息和海岸带开发研究。