杨树人工林边缘效应的初步研究  

Preliminary study on the edge effect of poplar plantation

作　　者：周永斌[1] 吴栋栋[1] 姚鹏 魏彪[1] 王晓毳[1] 

机构地区：[1]沈阳农业大学林学院,辽宁沈阳110161 [2]辽宁省辽阳市林业科学研究所,辽宁辽阳111000

出　　处：《福建林业科技》2008年第4期108-110,共3页Journal of Fujian Forestry Science and Technology

摘　　要：对3930杨树人工林边缘效应的一系列研究表明杨树人工林边缘效应显著。杨树人工林的边缘效应率达1.26,边缘效应深度达林内30 m,边缘部分杨树的光合速率明显高于林内,多出108.6%。对杨树人工林土壤养分含量的测定显示,土壤养分含量随着边缘的深度不断深入,表现为先降低后增高,并随着边缘深度的增加,升高的趋势逐渐变缓。A series of studies on edge effect of Populus x euramericana cv. N3930 plantation indicated the edge effect of poplar plantation is remarkable. The edge effect rate of the poplar plantation reached 1.26, the depth of the edge effect reaches 30 m, and the edge photosynthesis speed of the poplar was much higher that that of the interior and reached to 108.6 % or more. The measurement on soil nutrient content of the poplar tree showed that along with the edge depth the soil nutrient content performance for decrease first then increase, and the increase trend becomes gradually slowly along with the increment of the edge depth.

关 键 词：边缘效应 杨树 人工林 3930杨 

分 类 号：S792.110.5[农业科学—林木遗传育种]