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西藏河滩流动沙地植被恢复及物种多样性变化(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2018年02期
Page:
89-96
Column:
研究论文
publishdate:
2018-03-20

Article Info:/Info

Title:
Plant species diversity of vegetation restoration of moving sandy land on flood plain in Tibet, China
Article ID:
1000-2006(2018)02-0089-08
Author(s):
LIAO Chengrui1 LYU Guoping1 WANG Tao2 XU Yannan1* LI Haidong2*
1. Co-Innovation Centre for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China; 2.Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
Keywords:
Keywords:aeolian sandy land vegetational restoration species diversity Tibet Plateau
Classification number :
S72; X171.4
DOI:
10.3969/j.issn.1000-2006.201705006
Document Code:
A
Abstract:
【Objective】 The effects of different conditions on the species diversity and status of vegetation restoration were discussed to provide scientific methods for vegetation restoration of moving sandy lands on flood plains in the middle reaches of the Yarlung Zangbo River in Tibet, China.【Method】Combined with the survey on plant species in 2011 and 2016, the species composition and growth conditions of vegetation restoration on sand dunes were investigated for different ground treatments, and variations in species richness, α diversity were analyzed in detail for the moving sandy lands on the flood plains of the Brahmaputra River.【Result】 There are 10 species that have survived since 2008 in this experiment. Hedysarum scoparium, Artemisia sphaerocephala and Artemisia wellbyi have larger individual numbers and better growth statuses than the other species. While there are some differences between different treatments, treatment with sand-protecting straw barriers produce the maximum individual numbers of plants; however, the vegetative growth is best without treatment. The species diversity is in the following order: stone and plastic checkerboard barriers > sand-protecting straw barriers > blank control.【Conclusion】 H. scoparium, A. sphaerocephala and A. wellbyi can be used as pioneer plants in the early successional stages of the vegetation restoration of moving sandy lands on flood plains. Sand-protecting straw barriers can not only guarantee the best level of species diversity, but also benefit the growth of plants during the vegetation restoration process. In areas of serious disturbance by human activities, stone and plastic checkerboard barriers could be built in order to increase the species diversity, promote vegetation ecosystem stability, and enhance the vegetation restoration potential.

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