Arid
DOI10.1016/j.jhydrol.2012.12.002
Spatio-temporal variability of soil moisture and its effect on vegetation in a desertified aeolian riparian ecotone on the Tibetan Plateau, China
Li, Haidong1,4; Shen, Weishou1; Zou, Changxin1; Jiang, Jiang2; Fu, Lina3; She, Guanghui4
通讯作者Li, Haidong
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
出版年2013
卷号479页码:215-225
英文摘要

Soil moisture content is one of the limiting factors for natural vegetation succession in alpine river valleys on the Tibetan Plateau. However, its spatio-temporal variability and effect on artificial vegetation restoration has rarely been reported. In this paper, we conducted a case study to examine the spatio-temporal variability and vertical characteristics of soil moisture by setting up a 100 x 120 m experimental plot on aeolian sandy land in a riparian ecotone and analyzing the result data using a geo-statistical approach. The soil moisture contents at different depths all showed strong temporal variability, with the mean soil moisture ranging from 4% to 6% in spring, from 6% to 14% in summer and from 9% to 12% in autumn. The Gaussian semi-variogram model was the best fitted theoretical model for the spatial structure of soil moisture contents in different seasons, and soil moisture at the field scale showed strong spatial dependence. The spatial patterns of soil moisture all demonstrated strong similarity between depths with the strongest between 0-20 cm and 20-40 cm depths in autumn. The soil moisture content over the upper 60 cm was the key factor that restricted the seed germination and seedling growth, and it affected vegetation coverage and density. The precipitation, variations of river water level, elevation as well as landform types were the main factors determining the variations of soil moisture content in different seasons. The results have important implications for the ongoing vegetation restoration in the study area. (C) 2012 Elsevier B.V. All rights reserved.


英文关键词Soil moisture variability Aeolian landforms Vegetation restoration Arid landscape Yarlung Zangbo River
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000315008200019
WOS关键词SPATIAL VARIABILITY ; DYNAMICS ; WATER ; ECOSYSTEMS ; TRANSECT ; RAINFALL ; FORESTS ; RIVERS ; LAND
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178490
作者单位1.Nanjing Inst Environm Sci, Minist Environm Protect, Nanjing 210042, Jiangsu, Peoples R China;
2.Univ Miami, Dept Biol, Coral Gables, FL 33124 USA;
3.Univ So Mississippi, Gulf Coast Res Lab, Dept Coastal Sci, Ocean Springs, MS 39564 USA;
4.Nanjing Forestry Univ, Coll Forest Resources & Environm, Nanjing 210037, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714
Li, Haidong,Shen, Weishou,Zou, Changxin,et al. Spatio-temporal variability of soil moisture and its effect on vegetation in a desertified aeolian riparian ecotone on the Tibetan Plateau, China[J],2013,479:215-225.
APA Li, Haidong,Shen, Weishou,Zou, Changxin,Jiang, Jiang,Fu, Lina,&She, Guanghui.(2013).Spatio-temporal variability of soil moisture and its effect on vegetation in a desertified aeolian riparian ecotone on the Tibetan Plateau, China.JOURNAL OF HYDROLOGY,479,215-225.
MLA Li, Haidong,et al."Spatio-temporal variability of soil moisture and its effect on vegetation in a desertified aeolian riparian ecotone on the Tibetan Plateau, China".JOURNAL OF HYDROLOGY 479(2013):215-225.
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