生态输水对塔里木河下游胡杨主干径向生长量影响研究--以依干不及麻断面为例  

Influence of ecological irrigation on the trunk growth of Populus euphratica in the lower reaches of the Tarim River-A case of Yiganbujima Section

作　　者：龚君君[1] 叶茂[1,2] 禹朴家[3] 史小丽[1] 谢亮[1] 

机构地区：[1]新疆师范大学地理科学与旅游学院,乌鲁木齐830054 [2]自治区重点实验室一干旱区环境与资源实验室,乌鲁木齐830054 [3]中国科学院新疆生态与地理研究所,乌鲁木齐830011

出　　处：《干旱区资源与环境》2011年第2期162-166,共5页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(30600092;40971284);自治区高校科研计划青年教师科研启动基金(XJEDU2008S41);新疆师范大学校级博士科研启动基金(XJBS200706)资助

摘　　要：借鉴树木年轮学的方法,运用LINTABTM6型树木年轮测定仪读取钻芯的年轮宽度,研究塔里木河下游的胡杨在生态输水前后主干径向生长量变化规律。结果表明:(1)输水前后胡杨主干径向生长量变化较明显。输水前(1990-1999年)径向生长量为1.078mm,而输水后(2000-2008年)是1.764mm,比输水前增加了0.686mm。(2)胡杨径向生长量对输水的响应具有滞后性,输水后3-4年胡杨生长量达到最高值。(3)距河道不同距离的胡杨主干径向生长量存在显著差异性,整体上随着离河道距离的增加,胡杨径向生长量呈现下降趋势。In this paper,we used LINTABTM6 tree-ring measure instrument to read the width of tree-ring,and research the trunk-ring width varied regulation of Populus euphratica before and after ecological irrigation in the lower reaches of the Tarim River.The results indicated：（1）The trunk-ring width variation of Populus euphratica before and after ecological irrigation is obvious.Before irrigation（1990-1999）,the ring width is 1.078mm,and after irrigation（2000-2008）,the ring width is 1.764mm,which increases 0.686mm than before irrigation.（2）The response of Populus euphratica＇s growth to irrigation is sluggish,Populus euphratica＇s growth reaches to peak 3-4 years later since ecological irrigation.（3） There are notable differences in trunk-ring width variation of Populus euphratica when the distances from river-ways are different.As a whole,Populus euphratica＇s growth have appeard to decrease tendency with the increase of distances from river-ways.

关 键 词：生态输水 胡杨主干径向生长量 依干不及麻 塔里木河下游 

分 类 号：Q945[生物学—植物学]