摘要
为了解毛乌素沙地水分条件与中国沙棘造林成效的关系,对不同灌水强度和初植密度幼林的成活率及生长量进行了对比分析。结果表明:存活率和生长量随着灌水强度的增大呈先升后降的趋势,适宜于存活的最佳灌水量为1 200 mm,适宜于生长的最佳灌水量为1 500 mm;存活率及地径、冠幅生长量随着初植密度的增大也呈先升后降的趋势,适宜于存活的最佳造林密度为4 444.0株.hm-2。
In order to understand the relationship between water conditions and afforestation effect of Hip- pophae rkamniodes subsp sinensis in MuUs sand-land, different irrigation intensities and initial density on survival rate and growth increment of the young forest were analyzed. The results showed that optimum irrigation intensity existed, the survival rate and growth increment increased and then decreased as the increase of irrigation intensity. The optimum irrigation intensities for survival and growth were 1 200 mm and 1 500mm, respectively.. It also has an optimum initial density. The survival rate and growth increment of grotcal diameter and crown width increased and then decreased as the increase of initial density. The optimum initial density for survival was 4 444 ind · hm^-2.
出处
《西北林学院学报》
CSCD
北大核心
2011年第3期107-111,共5页
Journal of Northwest Forestry University
基金
国家自然科学基金项目(31070551/30371193)
国际科技合作项目(2008DFA32270)
关键词
中国沙棘
灌水强度
初植密度
生长量
存活率
Hippophae rkarnniodes subsp, sinensis
irrigation intensity
initial density
growth increment
survival rate
