Response of Morphological Characters and Photosynthetic Characteristics of Haloxylon ammodendron to Water and Salt Stress

Dong Hu, Guanghui Lv, Yadong Qie, Hengfang Wang, Fang Yang and Lamei Jiang
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Dong Hu: College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China
Guanghui Lv: College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China
Yadong Qie: Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, China
Hengfang Wang: College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China
Fang Yang: College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China
Lamei Jiang: College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China

Sustainability, 2021, vol. 13, issue 1, 1-12

Abstract: In arid desert areas , Haloxylon ammodendron plays an important role in maintaining the ecological balance of desert oases. However, there are few studies on the physiological characteristics of Haloxylon ammodendron under an environmental gradient. Here, we studied the changes in the morphological and photosynthetic characteristics and their correlations in Haloxylon ammodendron in the four habitats of the Ebinur Lake wetland. Our results show that in high-water and high-salt habitats, photosynthesis is affected by “stomata restriction,” while in other habitats, photosynthesis is mainly affected by “non-stomata restriction.” In addition, when the soil conditions were good , Haloxylon ammodendron chose leaf construction featuring high specific leaf area, while when the soil conditions were worse, it chose an opposite leaf construction model to ensure the optimal allocation of carbon assimilation products in heterogeneous habitats. This study will deepen our understanding of the trade-off strategy between the accumulation and distribution of plant photosynthate in special habitats in arid areas. The results are of theoretical value for analysis of the ecological adaptation mechanisms of plants in arid desert areas.

Keywords: Haloxylon ammodendron; morphological traits; photosynthetic characteristics; soil water-salt stress (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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