摘要
提出了最佳防护效益森林覆盖率的概念，探讨了确定最佳防护效益森林覆盖率的理论和方法。在一定森林面积的基础上，增强森林内涵质量、优化空间分布格局，将给森林生态系统带来显著的防护增益。森林面积、质量和分布的最佳组合，使森林防护能力达到极大值时的森林覆盖率即为最佳防护效益森林覆盖率，其值的大小与特定的自然地理背景条件高度相关。以四川盆地低山丘陵区为研究对象，森林生态系统防护能力为依据，计算出中低山区、低山区、深丘区、浅丘区和平原区最佳防护效益森林覆盖率分别为：５７％、４６％、４４％、３１％及１３％。
A new concept, forest coverage of the optimum forest protective effect(FCFP), is defined,and the theory and methodology to establish the FCFP are presented. On the basis of the given forest areas,the increase of the forest internal quality and the optimization of space distribution pattern have significant gains in protective effects of forest ecological system. The optimization of forest area, quality and space distribution maximize the forest protecting capacity(FPC). A maximum of FPC is regarded as FCFP,but the magnitude of FCFP is affected by a given natural environmental conditions. Based on the data from the region of low mountains and hills in Sichuan Basin,FCFP for districts of middle-low mountains, low mountains, hills, hillocks and plains may reach 57%, 46%, 44%, 31% and 13% respectively.
出处
《林业科学》
CAS
CSCD
北大核心
1996年第4期317-324,共8页
Scientia Silvae Sinicae
基金
国家"八五"重点攻关项目
关键词
森林覆盖率
防护效益
四川盆地
Forest coverage,Protective effect,Sichuan Basin
