【作者】 余坤勇； 刘健； 赖日文；

【Author】 YU Kun-yong1, LIU Jian2*, LAI Ri-wen1 (Forestry College, Fujian Agriculture and Forestry University, Fuzhou 350002,China; Sanming University , Sanmin 365001, China)

【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。结果表明,本文构建的生态退化指数值为1.196的区域,即为营林退化的区域。更多还原

【Abstract】 On the basis of the pressure-state-responsen concept, the paper realizes the determination of actual ecological fragility of Minjiang Watershed, afterwards, it determines the potential ecological fragile sensibility of Minjiang Watershed with the help of climate, terrain, mother substance, soil and so on to construct the ecological degeneracy index. Analyzing the relationship between eco-environmental degeneracy and forest resources canopy density, proportion occupied by mixed broadleaf-conifer forest, forest coverage rate, it determine the adjusting regions of forest managemental degeneracy based on ecologial fragility. The results show that it is the regions whose ecological degeneracy index is 1.196 that are the regions of forest managemental degeneracy.更多还原