摘要
论述了贵州喀斯特山区土壤侵蚀性退化的三种类型 (石漠化、土壤贫瘠化、土壤结构性恶化 )及特征 ,从岩性、地貌、人类活动等方面详细剖析了土壤侵蚀性退化的成因机理 ,指出土壤生态系统的脆弱性是喀斯特山区土壤侵蚀性退化的内因 ,而不合理的人类活动则是该地区土壤侵蚀性退化的诱因和外动力。在此基础上 ,根据各喀斯特地域的具体情况 ,结合实施西部大开发战略中有关生态建设的要求 ,提出了保护抢救喀斯特山区土壤资源、防治土壤退化的对策措施。
Karst landform is popular in Guizhou and 73% of its total area is covered with carbonate rock.Eco environmental fragility is typical of the region, where the contradiction between population and (cultivated) land is sharpening and erosive deterioration of soil is very serious. This paper expounded the main three types of soil deterioration (rocky desertification, soil barrenness, and deterioration of soil structure) and their features, especially analyzed the causes and mechanism of soil erosive deterioration and pointed out that fragility of soil ecosystem is the internal cause and unreasonable human activities (such as overloaded pressure of population, backward farming methods, cultivating along mountain slope, etc.) are inducements of soil erosive deterioration in Guizhou karst regions. Based on the analysis, some corresponding countermeasures, to conserve soil resources and harness soil deterioration were suggested according to the concrete conditions of Guizhou karst mountainous regions and the requirement for eco environmental construction in the development of West of China.
出处
《中国岩溶》
CAS
CSCD
2001年第3期217-223,共7页
Carsologica Sinica
基金
国家自然科学基金项目 (496610 0 1)
国家科技部重点科技项目 (2 0 0 0 -K0 1-0 1-12 )
贵州省基金 (黔基合计 (1999) 3 0 5 6号 )联合资助
关键词
土壤侵蚀性退化
成因机理
防治对策
贵州
喀斯特山区
石漠化
土壤贫瘠化
Soil erosive deterioration
Types and features
Causes and mechanism
Countermeasures
Guizhou karst mountainous regions
