Academic Journal
Water use strategy of Ammopiptanthus mongolicus community in a drought year on the Mongolian Plateau
| العنوان: | Water use strategy of Ammopiptanthus mongolicus community in a drought year on the Mongolian Plateau |
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| المؤلفون: | Zhu, Ya-Juan, Wang, Guo-Jie, Xin, Zhi-Ming |
| المساهمون: | Zhang, Wen-Hao, Fundamental Research Funds for the Central Non-profit Research Institute of Chinese Academy of Forestry |
| المصدر: | Journal of Plant Ecology ; volume 13, issue 6, page 793-800 ; ISSN 1752-993X |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 2020 |
| الوصف: | Aims In desert ecosystems, water is a restricting factor for plant growth and vegetation dynamics. The relatively stable water source from deep soil profile or groundwater is important for plant survival during drought. Understanding water use strategy of endangered species, in desert ecosystem is essential for their conservation and restoration such as Ammopiptanthus mongolicus on the Mongolian Plateau. Methods The stable isotope method of δD and δ 18O was used to examine the main water sources of A. mongolicus and two companion shrubs, e.g. Artemisia ordosica and Artemisia xerophytica. The contribution of different water sources to each species was calculated by IsoSource model. Leaf δ 13C was used to compare long-term water use efficiency of three shrubs. Soil moisture and root distribution of three shrubs was measured to explain plant water use strategy. Important Findings The results showed that A. mongolicus relied on groundwater and 150–200 cm deep soil water, with the former contributing to almost half of its total water source. Artemisia ordosica mainly used 150–200 cm deep soil water, but also used shallow soil water within 100 cm in summer and autumn. Artemisia xerophytica mainly used 150–200 cm deep soil water and groundwater, with the latter contributing to about 30%–60% of its total water source. The three shrubs had dimorphic or deep root systems, which are in accord with their water sources. The WUE in the evergreen shrub A. mongolicus was higher than in two deciduous Artemisia shrubs, which may be an adaptive advantage in desert ecosystem. Therefore, groundwater is an important water source for the endangered shrub A. mongolicus in a drought year on Mongolian Plateau. Ammopiptanthus mongolicus and two Artemisia shrubs competed for deep soil water and groundwater. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1093/jpe/rtaa064 |
| DOI: | 10.1093/jpe/rtaa064/33768202/rtaa064.pdf |
| الاتاحة: | http://dx.doi.org/10.1093/jpe/rtaa064 http://academic.oup.com/jpe/advance-article-pdf/doi/10.1093/jpe/rtaa064/33768202/rtaa064.pdf http://academic.oup.com/jpe/article-pdf/13/6/793/34945965/rtaa064.pdf |
| Rights: | https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
| رقم الانضمام: | edsbas.C9E211A7 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/jpe/rtaa064 |
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