应用生态学报2011，Vol.22Issue(1)：29-34,6.
塔里木河下游生态输水后胡杨径向生长量的时空变化
Spatiotemporal variation of Populus euphratica's radial increment at lower reaches of Tarim River after ecological water transfer
摘要
Abstract
Taking the Populus euphratica at lower reaches of Tarim River as test object, and by the methods of tree dendrohydrology, this paper studied the spatiotemporal variation of P. euphratic's branch radial increment after ecological water transfer. There was a significant difference in the mean radial increment before and after ecological water transfer. The radial increment after the ecowater transfer was increased by 125％, compared with that before the water transfer. During the period of ecological water transfer, the radial increment was increased with increasing water transfer quantity, and there was a positive correlation between the annual radial increment and the total water transfer quantity ( R2 = 0. 394), suggesting that the radial increment of P. euphratica could be taken as the performance indicator of ecological water transfer. After the ecological water transfer,the radial increment changed greatly with the distance to the River, i. e. , decreased significantly along with the increasing distance to the River (P=0. 007). The P. euphratic's branch radial increment also differed with stream segment ( P = 0. 017 ), i. e. , the closer to the head-water point ( Daxihaizi Reservoir), the greater the branch radial increment. It was considered that the limited effect of the current ecological water transfer could scarcely change the continually deteriorating situation of the lower reaches of Tarim River.关键词
生态输水/胡杨/径向生长量/时空变化/塔里木河下游分类
农业科技引用本文复制引用
安红燕,徐海量,叶茂,禹朴家,龚君君..塔里木河下游生态输水后胡杨径向生长量的时空变化[J].应用生态学报,2011,22(1):29-34,6.基金项目
国家自然科学基金项目(30970549,40971284)资助. （30970549,40971284）
