【作者】 余坤勇； 刘健；

【Author】 YU Kunyong~1 LIU Jian~(1,2) (Forestry College,Fujian Agriculture and Forestry University,Fujian,Fuzhou 350002,China;Sanming University,Fujian,Sanmin 365001)

【机构】 福建农林大学林学院； 福建三明学院；

【摘要】 本文基于压力—状态—响应的思路,实现了闽江流域现实生态脆弱性的测定,并从气候、地形、母质和土壤等自然要素综合测定了闽江流域潜在的生态脆弱敏感性,构建了生态退化指数,分析区域生态环境退化与森林资源郁闭度、针阔混交林所占比重、森林覆盖率的关系,确定了基于生态脆弱性的营林退化调整区,并基于森林覆盖率、针叶林比重值、土壤侵蚀均值、坡度25度以上林地的比重值、针阔混交林比重和郁闭度值与区域生态脆弱性的关系分析,提出区域具体的营林调控技术。更多还原

【Abstract】 Based on the idea of ’Pressure - state - the response’ to realize the frangibility of minjiang river watershed reality,this thesis building an ecological degradation index to determine the minjiang river watershed ecological fragile and sensitive of potential by used the natural elements such as climate,topography,organic and soil and so on.Analyze the relationship among regional ecological degradation and forest resources crown density, the proportion of mixed wood,forest coverage,determined the areas of forest degradation adjustment based on ecological vulnerability and put forward the specific control technology of forest by analyzed the relationship among regional ecological vulnerability and forest coverage,the value of coniferous forest,the average value of soil erosion,the proportion of the value of forest land which more than 25 degrees slope,the proportion of mixed wood,canopy density.更多还原