Ecophysiological response and morphological adjustment of two Central Asian desert shrubs towards variation in summer precipitation
文献类型：期刊论文
| 作者 | Xu ; Li ; Xu ; Zou ; Hao ; Yan ; Guiqing ; Ting |
| 刊名 | PLANT CELL AND ENVIRONMENT
 |
| 出版日期 | 2007 |
| 卷号 | 30期号:4页码:399-409 |
| 关键词 | RECENT CLIMATE-CHANGE WATER RELATIONS ARID ECOSYSTEM PHOTOSYNTHESIS ACCLIMATION GROWTH COMMUNITY PLANTS TREES CO2 |
| ISSN号 | 0140-7791 |
| 通讯作者 | Li, Y, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Fukang Stn Desert Ecol, 40-3 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China |
| 中文摘要 | 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 response will change the plant composition of desert communities. This integrated study on the ecophysiological and individual morphological scale investigated the response, acclimation and adaptation of two desert shrubs, with different water-use strategies, to variations in water conditions. The experiments were carried out on two native dominant desert shrubs, Tamarix ramosissima and Haloxylon ammodendron, under three precipitation treatments (natural, double and no precipitation, respectively), in their original habitats on the southern periphery of Gurbantonggut Desert, Central Asia, during the growing season in 2005. Changes in photosynthesis, transpiration, leaf water potential, water-use efficiency, above-ground biomass accumulation and root distribution of the two species were examined and compared under the contrasting precipitation treatments. There were significant interspecific differences in water-use strategy and maintenance of photosynthesis under variation in precipitation. For the phreatophyte T. ramosissima, physiological activity and biomass accumulation rely on the stable groundwater, which shields it from fluctuation in the water status of the upper soil layers caused by precipitation. For the non-phreatophyte H. ammodendron, efficient morphological adjustment, combined with strong stomatal control, contributes to its 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. |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/10378]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Xu,Li,Xu,et al. Ecophysiological response and morphological adjustment of two Central Asian desert shrubs towards variation in summer precipitation[J]. PLANT CELL AND ENVIRONMENT,2007,30(4):399-409. |
| APA | Xu.,Li.,Xu.,Zou.,Hao.,...&Ting.(2007).Ecophysiological response and morphological adjustment of two Central Asian desert shrubs towards variation in summer precipitation.PLANT CELL AND ENVIRONMENT,30(4),399-409. |
| MLA | Xu,et al."Ecophysiological response and morphological adjustment of two Central Asian desert shrubs towards variation in summer precipitation".PLANT CELL AND ENVIRONMENT 30.4(2007):399-409. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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