%0 Journal Article
%T Ecophysiological response and morphological adjustment of Haloxylon ammodendron towards variation in summer precipitation<br>梭梭(Haloxylon ammodendron)生理与个体用水策略对降水改变的响应
%A XU Hao
%A LI Yan
%A ZOU Ting
%A XIE Jing-Xia
%A JIANG Li-Xue
%A <br>许皓
%A 李彦
%A 邹婷
%A 谢静霞
%A 蒋礼学
%J 生态学报
%D 2007
%I 
%X As part of global climate change, variation in precipitation in arid ecosystems is leading to plant adaptation in water use strategies; significant interspecific differences in responses will change the plant composition of desert communities. This integrated study on the ecophysiological and individual morphological scales investigated the response, acclimation, and adaptation of a native dominant desert shrub, Haloxylon ammodendron, to variation in water conditions. The experiments were carried out under three manipulated precipitation treatments (natural, double and no precipitation), in its original habitat on the southern periphery of Gurbantonggut Desert , during the growing season in 2005. Changes in its photosynthesis, transpiration, leaf water potential, water use efficiency, above-ground biomass accumulation, and root distribution were examined and compared under the contrasting precipitation treatments. The results indicate that its efficient morphological adjustment, combined with strong stomatal control, contributes to its maintenance of photosynthesis and acclimation to variation in precipitation. On account of its positive responses to increased precipitation, H. ammodendron is predicted to succeed in interspecific competition in a future, moister habitat.
%K Haloxylon ammodendron
%K variation in precipitation
%K photosynthesis
%K leaf water potential
%K biomass accumulation
%K root distribution
%K water use strategy
%K morphological adjustment<br>梭梭
%K 降水改变
%K 光合作用
%K 叶水势
%K 生物量累积
%K 根系分布
%K 用水策略
%K 形态调节
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=072DB27860397D4276D33232E95B907B&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=59906B3B2830C2C5&sid=D9780D5184705AF2&eid=3AC48D88ABB00162E08EB44AFEFDB020&journal_id=1000-0933&journal_name=生态学报&referenced_num=1&reference_num=5