摘要
利用RS、GIS技术和多目标灰色局势决策方法,综合森林的经济效益指标(生物量、林分生产力)和生态效益指标(涵养水源量、固土量),对清原县现有森林类型进行空间优化配置.结果表明:经优化配置后,清原县森林类型的结构比例发生了明显的变化,其中针叶林和阔叶林面积由43%、51%减少到23%、31%,针阔混交林面积由3%增加到43%,灌木林面积保持不变;森林生态系统生物量、林分生产力分别增加0.6%、2.1%,而涵养水源功能增加31.7%,固土功能基本保持不变,在保留较高木材生产效益的同时,可充分发挥涵养水源功能,实现森林生态系统经济效益和生态效益的最大化.
By using RS/GIS techniques and the method of multiple objective grey situation deci- sion, and in considering the forest economic benefits （biomass and stand productivity） and ecologi- cal benefits （water and soil conservation）, an optimal spatial allocation of the present forest types in Qingyuan County of Liaoning, Northeast China was approached in this study. After the optimiza- tion of spatial allocation, the structural proportions of different forest types in Qingyuan County changed obviously, with the area of coniferous forests reduced from 43% to 23%, the area of broa- dleaved forests reduced from 51% to 31% , the area of mixed coniferous-broadleaf forests increased from 3% to 43%, and the area of shrubs remained unchanged. As compared with the results before optimization, the biomass, stand productivity, and water conservation function of the forest ecosys- tem in Qingyuan County after optimization increased by 0.6%, 2.1%, and 31.7%, respectively, and the soil conservation function remained unchanged. It could be concluded that after the optimi- zation of spatial allocation, the forest ecosystem of Qingyuan County could maintain its soil conser- vation function, and, at the time of keeping higher timber production, fully exert water conservation function, realizing the maximization of the economic and ecological benefits of the forest ecosystem.
出处
《应用生态学报》
CAS
CSCD
北大核心
2013年第4期1070-1076,共7页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展计划项目(2012CB416906)资助
关键词
辽宁省清原县
多目标灰色局势决策
空间优化配置
森林生态系统
Qingyuan County of Liaoning
muhiple objective grey situation decision
spatial opti-mum allocation
forest ecosystem.
