摘要
为了提高退耕还林地经营杨树人工林的经济和生态效益,比较了两种经营措施对南方退耕还林地杨树人工林生长的影响,结果表明:杨树人工林林农间作显著促进杨树的生长,连续间作2 a后,其胸径、树高和蓄积量比对照分别增加5.8%、56.1%、130.7%。密度对南方退耕还林地3 a生杨树蓄积量有显著的影响,蓄积量最大值是最小值的4.15倍。
In order to improve the economic and ecological benefits of planting poplar in the “Grain for Green Land”, the effects of two management practices on growth of poplar plantations in the “Grain for Green Land” were investigated. The results indicated that poplar-interplanting system significantly improved the growth of poplar plantation. After two-year interplanting, the increment of diameter at breast height, tree height and stand volume was 5.8%, 56.1% and 130.7% higher than those in the no interplanting plantation. Hanting densities also had an obvious effect on stand volume, and the maximum volume is the 4.15 times of the minimum volume.
出处
《林业科技开发》
2006年第1期28-30,共3页
China Forestry Science and Technology
基金
国家林业局重点研究项目"喀斯特地区造林树种选择和配置技术试验示范"(2003-055-L55)
南京林业大学人才基金项目"杨树人工林地力维护技术研究"
关键词
间作
密度
山地
杨树
生长
Interplantation
Density
Mountain area
Poplar
Growth
