中国水土保持生态修复分区

分析生态修复的适宜性条件,根据分异性、地带性、等级性、共轭性、主导因子及县域完整性等原则,参考我国各类生态及自然区划成果,建立基础图谱数据库;以县级行政区为基本分区单元,搜集了全国2861个县级行政区的基础资料,建立专题图谱数据库;采用GIS技术,选择气候、植被、土壤、地貌、土壤侵蚀类型、人口密度等关键性指标,通过因子叠加的分析方法和自上而下的分区方法,将全国(除台湾、海域)划分为4个水土保持生态修复类型区(湿润生态修复类型区、半湿润生态修复类型区、半干旱生态修复类型区、干旱生态修复类型区)和14个水土保持生态修复区.湿润、半湿润生态修复类型区自然条件好,可以植树造林;而在半干旱、干旱生态修复类型区仅能在局部地段植树,但不宜大面积造林.

The Study of Regionalization on Ecological Restoration in China

Developing nationwide ecological restoration researches for soil and water conservation are proposed in China. In this paper, optimal conditions of ecological restoration were analyzed abide by the principle of heterogeneity, zonation, grade, conjugacy, primary factor and county land integrity. The special mapping database was developed, based on the raw materials of 2861 counties. With the application of GIS, choosing the key actors, such as climate, vegetation, soil, physiognomy, the types of soil erosion, and population density, the national area, except Tai Wan and maritime space, was divided into 4 first level ecological restoration domains and 14 second level ecological restoration regions by the way of adopting superposed analytical method and superincumbent partition method. Humid and Sem humid ecological restoration domains have better natural conditions for afforestation. Arid and Semi arid ecological restoration domains are only fit for afforestation in brush fire area.