Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest

LI Wei; FENG Wei; YANG Wen-bin; DANG Hong-zhong; CHEN Xue-xun; LI Dong-hui; LIANG Hai-rong

doi:10.13961/j.cnki.stbctb.2014.06.022

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Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest

- Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest
- Bulletin of Soiland Water Conservation Vol. 33, Issue 6, Pages: 79-82(2014)
- 作者机构：
  
  1. 中国林业科学研究院荒漠化研究所,北京,100091
  2. 内蒙古赤峰市敖汉旗林业局, 内蒙古敖汉,024300
  3. 内蒙古林业科学研究院,内蒙古,呼和浩特,010010
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.06.022
  CLC：
- Published：2014
- 稿件说明：
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LI Wei, FENG Wei, YANG Wen-bin, et al. Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 79-82.
DOI：

LI Wei, FENG Wei, YANG Wen-bin, et al. Response of Branch Water Potential and Growth on Water Stress of Populus×Xiaozhuanica Young Forest[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 79-82. DOI： 10.13961/j.cnki.stbctb.2014.06.022.

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)%。

Abstract

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 higher 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 characteristics

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.

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