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A Study of the Gas Exchange Characteristics of Four Desert Plants

4种荒漠植物气体交换特征的研究


在自然条件下我们对塔克拉玛干沙漠南缘策勒绿洲边缘4种主要荒漠植物胡杨(Populus euphratica Oliv.)、沙拐枣(Calligonum caput_medusae Schrenk.)、骆驼刺(Alhagi sparsifolia B.Keller et Shap)和柽柳(Tamarix ramosissima Lbd.)的气体交换、水势及其δ13C的季节变化特征进行了比较研究。结果表明胡杨和沙拐枣气体交换日变化为单峰曲线,骆驼刺和柽柳为双峰曲线;其中骆驼刺属低光合低蒸腾型,WUEph最低,

Populus euphratic, Calligonum caput-medusae, Alhagi sparsifolia and Tamarix ramosissima, are four very important species of desert plants in the frangible desert-oasis ecosystem in the southern margin of the Taklimakan Desert. They are used for preventing