The Ecosystem Effects of Sand-Binding Shrub Hippophae rhamnoides in Alpine Semi-Arid Desert in the Northeastern Qinghai–Tibet Plateau

Lihui Tian, Wangyang Wu, Xin Zhou, Dengshan Zhang, Yang Yu, Haijiao Wang and Qiaoyu Wang
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Lihui Tian: State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi’ning 810016, China
Wangyang Wu: School of Earth Sciences, East China University of Technology, Nanchang 200237, China
Xin Zhou: State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi’ning 810016, China
Dengshan Zhang: Qinghai Academy of Agricultural Forestry Sciences, Qinghai University, Xi’ning 810016, China
Yang Yu: Department of Sediment Research, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Haijiao Wang: State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi’ning 810016, China
Qiaoyu Wang: State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi’ning 810016, China

Land, 2019, vol. 8, issue 12, 1-15

Abstract: The planting of sand-binding vegetation in the Qinghai Lake watershed at the northeastern edge of the Qinghai–Tibet Plateau began in 1980. For this paper, we took the desert on the eastern shore of Qinghai Lake as the study area. We analyzed a variety of aged Hippophae rhamnoides communities and aeolian activities, and we discuss the relationship between them. The main conclusions are as follows: (1) With an increasing number of binding years, the species composition became more abundant, natural vegetation began to recover, and biodiversity increased year by year. At the same time, plant height, canopy width, and community coverage increased, but H. rhamnoides coverage was reduced to 36.70% as coverage of Artemisia desertorum increased to 25.67% after 10 years of fixing. The biomass of H. rhamnoides increased significantly, especially the underground biomass. For example, the biomass of area 15a was about 10 to 30 times that of area 1a. (2) Plants are a useful obstacle to aeolian activity. The presence of plants reduced the wind flow in the upper parts of the plants, but it did not have obvious regular characteristics. The longer the fixation term, the lower the surface sediment transport. It is significant that the sediment transport amount in winter was four times that in the summer. After 15 years of binding, H. rhamnoides grows well, and the community is still stable in the study area.

Keywords: desert around the Qinghai Lake; vegetation restoration; Hippophae rhamnoides; aeolian activities (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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