摘要
章古台位于辽宁省西北部彰武县境内,是科尔沁沙地的东南前哨。50年代初期,本区主要由流动沙丘、半流动沙丘和丘间低地组成,生态环境十分恶劣。为了治理风沙危害,改变生态环境,1952年在该地区进行大面积樟子松造林。现已有林地2150ha,成功地将光秃的沙丘改造成翠绿的森林环境。显然,下垫面的这种变化不仅会带来该地区生态环境的改变。
According to the observations on the surfaces of sand-holding forest, fixed dune and small-scale remnant of mobile dune in 1984 and 1985, sand fixation and afforestation changed the components of surface heat balance: (1) The surface reflection rate and effective radiation were reduced by 11—19 and 15—19% respectively and an increment of 603.7×10~8 Jm^(-2) in net radiation was obtained during growing season after the fixation of drifting dunes and the establishment of forests. (2) The distribution of heat on the surface was changed due to sand fixation and afforestation. Sensible heat flux and Bowen ratio were reduced by 6—15% and 0.18—0.44% respectively, but latent heat flux was notably increased by 54—90%.
出处
《生态学杂志》
CAS
CSCD
北大核心
1989年第1期17-21,共5页
Chinese Journal of Ecology
关键词
固沙林
下垫面
热量平衡
heat balance, surface, sand-stabilization forest.
