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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (32): 181-185.

所属专题： 农业生态

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

西南岩溶区土壤生态系统退化研究

王巨 谢世友   

  • 收稿日期:2011-04-25 修回日期:2011-05-17 出版日期:2011-12-15 发布日期:2011-12-15

The Study of Soil Ecosystem Degradation in SouthWestern Karst Region

  • Received:2011-04-25 Revised:2011-05-17 Online:2011-12-15 Published:2011-12-15

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摘要：

受喀斯特特殊地质历史背景的影响，中国西南岩溶区土壤生态系统存在土壤垂直分异强烈、空间分异强烈、土壤不可再生性的结构特征和营养元素循环不畅、植被生长受限的功能特征。笔者在分析西南岩溶土壤生态系统结构和功能脆弱性的基础上，从系统物质能量循环的角度来探讨西南岩溶区土壤生态系统在土壤侵蚀过程中土壤结构、养分、水分、微生物退化过程和机理。

关键词: 普惠金融, 普惠金融, 现代农村金融制度, 外部性

Abstract:

Deeply influenced by karst geological environment, the structure of the soil ecological system in the southwest karst area of China is characterized by vertical-space differentiation strongly, irrefragable and its function is characterized by poorly nutrient elements cycling, flawed vegetation growing. On the basis of analysis of the soil ecosystem system’s structure and function vulnerability, the degradation processes and mechanisms of the soil ecological system in the southwest karst area had been analyzed and were discussed from structure, nutrient, moisture and microbial points of view in this paper from the angle of the material-energy cycle.