Experimental study on water transport observations of desert riparian forests in the lower reaches of the Tarim River in China

被引：46

作者：

Chen, Yaning ^{[1
]}

Li, Weihong ^{[1
]}

Zhou, Honghua ^{[1
]}

Chen, Yapeng ^{[1
]}

XinmingHao ^{[1
]}

Fu, Aihong ^{[1
]}

Ma, Jianxin ^{[1
]}

机构：

[1] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, 818 South Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOMETEOROLOGY | 2017年 / 61卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Desert riparian forest; Hydraulic lift; Water source; Water transport; Tarim River basin; POPULUS-EUPHRATICA; NORTHWEST CHINA; HYDRAULIC LIFT; GROUNDWATER DEPTH; SOIL-WATER; TAMARIX-RAMOSISSIMA; DROUGHT STRESS; INLAND RIVER; HEIHE RIVER; SAP FLOW;

D O I：

10.1007/s00484-016-1285-x

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Studying the water use processes of desert riparian vegetation in arid regions and analyzing the response and adaptation strategies of plants to drought stress are of great significance for developing ecological restoration measures. Based on field monitoring and test analyses of physiological ecological indicators of dominant species (Populus euphratica and Tamarix chinensis) in the desert riparian forest in the lower reaches of the Tarim River, the water relations of P. euphratica and T. chinensis under drought stress are discussed and some water use strategies put forward. The results show that (1) concerning plant water uptake, desert riparian forests depend mainly on groundwater to survive under long-term water stress. (2) Concerning plant water distribution, the survival of P. euphratica and nearby shallow root plants is mainly due to the hydraulic lift and water redistribution of P. euphratica under drought stress. (3) Concerning plant water transport, P. euphratica sustains the survival of competitive and advantageous branches by improving their ability to acquire water while restraining the growth of inferior branches. (4) Concerning plant transpiration, the sap flow curves of daily variations of P. euphratica and T. chinensis were wide-peak sin and narrower-peak respectively. T. chinensis has better environmental adaptability.

引用

页码：1055 / 1062

页数：8

共 36 条

[1] Changes of xylem hydraulic efficiency and native embolism of Tamarix ramosissima Ledeb. seedlings under different drought stress conditions and after rewatering [J].