摘要
基于2007年Landsat TM遥感影像和影响防护林的主导环境因子,对三峡库区的森林立地进行分类,并通过选取水源涵养量、生物量和林分生产力3个指标,利用多目标灰色局势决策模型对库区现有的针叶林、阔叶林、针阔混交林和灌木林4种防护林类型进行空间优化配置.结果表明:2007年,三峡库区森林立地可划分为40种类型;空间配置优化后,研究区针叶林、阔叶林、针阔混交林和灌木林的面积比例分别为32.55%、29.43%、34.95%和3.07%.与优化前相比,优化后针叶林和灌木林的面积比例分别减少了8.79%和28.55%,阔叶林和针阔混交林分别增加了10.23%和27.11%.通过防护林类型的空间优化,三峡库区整体的水源涵养能力、生物量和林分生产力分别增加14.09×108m3、0.35×108t和1.08×106t.
Based on the 2007 Landsat TM images and the dominant environmental factors of shelter forest,the forest sites in the Three Gorges Reservoir Area were classified,and by using multiple objective grey situation decision model,three indices including water conservation amount,biomass, and stand productivity were selected to make the spatial optimum allocation of the present four kinds of shelter forest （ coniferous forest,broadleaf forest,mixed coniferous-broadleaf forest,and shrub） in the Area. The forest sites in the Area in 2007 could be classified into 40 types,and after the optimization of spatial allocation,the proportion of coniferous forest,broadleaf forest,mixed coniferous-broadleaf forest,and shrub would be 32. 55% ,29. 43% ,34. 95% ,and 3. 07% ,respectively. Comparing with that before optimization,the proportion of coniferous forest and shrub after optimiza- tion was reduced by 8. 79% and 28. 55% ,while that of broadleaf forest and mixed coniferous-broadleaf forest was increased by 10. 23% and 27. 11% ,respectively. After the optimization of spatial allocation,the amount of water conservation,biomass,and stand productivity of the shelter forests in the area would be increased by 14. 09 ×108 m3,0. 35 ×108 t,and 1. 08 ×106 t,respectively.
出处
《应用生态学报》
CAS
CSCD
北大核心
2010年第12期3083-3090,共8页
Chinese Journal of Applied Ecology
基金
国家"十一五"科技支撑计划项目(2006BAD03A1301
2006BAD03A0710)
长江三峡库区(秭归)森林生态定位站项目资助
关键词
三峡库区
防护林
空间优化配置
综合效益
多目标灰色局势决策
Three Gorges Reservoir Area
shelter forest
spatial optimum allocation
integrated benefit
multiple objective grey situation decision.
作者简介
马浩，男，1984年生，硕士研究生．主要从事水土保持和3S技术应用研究，发表论文3篇．E-mail：mahao@webmml．hzau．edu．cn
通讯作者．E-mail：whzhouzx@126．com
