文献类型：期刊文献

中文题名：赤峰杨幼林枝条水势及生长对水分胁迫的响应

英文题名：Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest

作者：李卫[1] 冯伟[1] 杨文斌[1] 党宏忠[1] 陈学勋[2] 李东惠[2] 梁海荣[3]

第一作者：李卫

机构：[1]中国林业科学研究院荒漠化研究所;[2]内蒙古赤峰市敖汉旗林业局;[3]内蒙古林业科学研究院

年份：2014

卷号：34

期号：6

起止页码：79-82

中文期刊名：水土保持通报

外文期刊名：Bulletin of Soil and Water Conservation

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：国家自然科学基金项目"半干旱区低覆盖度固沙林的水分动态及其应对极旱年的调节机理"(31170667);国家重点基础研究发展计划项目(2013CB429901)

语种：中文

中文关键词：赤峰杨;枝条水势;水分胁迫;生长量

外文关键词：P.× Xiaozhuanica; branch water potential; water stress; growth amount

分类号：S812

摘要：通过对赤峰杨幼林地进行控水试验,测定了不同程度干旱胁迫下赤峰杨枝条水势、幼林平均株高、地径生长量及生长状况等指标。结果表明,当土壤含水量高于15.6%时,赤峰杨枝条水势没有明显变化,低于11.03%时,枝条水势迅速下降;当土壤含水量大于(17.72±2.75)%时,赤峰杨幼树生长正常,生长量增加趋势快速明显,而当土壤含水量低于(7.12±2.75)%时,赤峰杨出现严重衰退特征,生长基本停滞,个体开始出现死亡。综合分析枝条水势、株高生长、地径生长等指标,表明有利于赤峰杨幼林快速生长,并维持林分稳定的适宜土壤水分含量为大于(17.72±2.75)%。
The branch water potential, average tree height and basal diameter of P.× Xiaozhuanica young forest were determinated based on the water controlling experiment. The results showed that there was no significant change for the branch water potential of P. × Xiaozhuanica when the soil water content was high- er than 15.6%, but the branch water potential decreased rapidly when the soil water content was less than 11.03 %. The young forest grew normally and the growth amount increased significantly when the soil water content was higher than （17.71±2.75）%. However, the young forest showed up severe recession characteris- tics, nearly stop growing, and some of the tree even dying when the soil water content was below （7.12± 2.75）%. Therefore, the perfect soil water content should be （17.72±2. 75）% for the rapid growth and maintaining the stability of P. × Xiaozhuanica young forest.