花岗岩侵蚀地自然生态修复区域研究——以长汀根溪河流域为例

Research on the area of natural ecological restoration in eroded hilly granite land Gen-xi River watershed (Chang-ting Country of Fujian Province) as an example

以GIS软件为平台,采用特尔菲法,通过对长汀县根溪河流域的高程图、坡度图、崩岗图与水土流失现状图进行空间叠加分析,求取出各因子与流域生态修复区域间的定量关系.研究表明:可自然生态修复区域和不可自然生态修复区域分别主要集中在根溪河流域的上游和中下游地区,面积分别为21214 800m^2,1 435 275m^2.

Space overlapping is analyzed of the current maps of elevation, slope, slump gull, and water and soil loss based on the platform of GIS in Gen-xi River watershed in Chang-ting Country. Quantitative relations between influencing factors and the watershed ecological restoration areas are figured out adapting to the Delphi method. The results showed that the main differences between natural ecological restoration areas and unnatural ecological restoration regions were centralized on the upriver, middle and downstream of watershed of Gen-xi River and the areas were 21 214 800 square meters, 1 435 275 square meters respectively.