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Natural recovery of moss-dominated biological soil crusts after surface soil removal and their long-term effects on soil water conditions in a semi-arid environment

文献类型： 外文期刊

作者： Xiao, Bo 1 ; Zhao, Yunge 2 ; Wang, Huifang 2 ; Wu, Juying 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China

2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China

关键词： Biocrust;Loess Plateau of China;Soil water storage;Soil moisture regime;Desertification control;Arid and semi-arid regions

期刊名称：CATENA （ 影响因子：5.198； 五年影响因子：5.594 ）

ISSN： 0341-8162

年卷期： 2014 年 120 卷

页码：

收录情况： SCI

摘要： Biological soil crusts (BSCs) are extensively developed and commonly regarded as a kind of vegetation in desertification areas around the world. The natural recovery process of BSCs after disturbance and their long-term impacts on the soil water conditions are important but not well understood. In order to provide more insights into this problem, we set up two treatments including BSCs (natural BSCs without disturbance) and disturbed BSCs (the top 30 mm of surface soil, including the BSC layer, was severely disturbed and completely removed) in a semi-arid environment on the Loess Plateau of China. Over the succeeding years, the natural recovery process of BSCs was qualitatively described and the soil water content at 0-90 cm depth of the two treatments was consecutively monitored. The results showed the following: (1) it is possible to recover natural moss-dominated BSCs after severe disturbance under natural conditions, and the recovery process to BSC full-coverage took approximately three years; (2) the BSC disturbance greatly decreased soil water content by up to 18% and the effects gradually weakened with time; (3) the BSC disturbance decreased surface soil water content (0-70 cm) by up to 24% but increased deep soil water content (80-90 cm) by up to 13%; and (4) the BSC disturbance decreased soil water storage at 0-90 cm by 7.8 mm, 4.4 mm, 8.0 mm, and 4.9 mm in the second, third, fourth, and seventh years, respectively. We concluded that the BSC disturbance degraded soil water conditions in the three to four years following the disturbance. Therefore, the artificial destruction of natural moss-dominated BSCs in a semiarid region on the Loess Plateau of China should not be recommended as a land management practice for the improvement of soil water conditions. (C) 2014 Elsevier B.V. All rights reserved.

  • 相关文献

[1]Biological soil crusts decrease soil temperature in summer and increase soil temperature in winter in semiarid environment. Xiao, Bo,Xiao, Bo,Wang, Huifang,Fan, Jun,Fischer, Thomas,Veste, Maik.

[2]Comparison of drip fertigation and negative pressure fertigation on soil water dynamics and water use efficiency of greenhouse tomato grown in the North China Plain. Li, Yinkun,Wang, Lichun,Xue, Xuzhang,Guo, Wenzhong,Xu, Fan,Li, Youli,Sun, Weituo,Chen, Fei.

[3]Development of artificial moss-dominated biological soil crusts and their effects on runoff and soil water content in a semi-arid environment. Xiao, Bo,Wang, Qinghai,Li, Cui,Xiao, Bo,Zhao, Yunge.

[4]Artificial culture of biological soil crusts and its effects on overland flow and infiltration under simulated rainfall. Xiao, Bo,Wang, Qing-hai,Xiao, Bo,Zhao, Yun-ge,Shao, Ming-an,Xiao, Bo,Zhao, Yun-ge,Shao, Ming-an. 2011

[5]The effects of narrow grass hedges on soil and water loss on sloping lands with alfalfa (Medicago sativa L.) in Northern China. Xiao, Bo,Wang, Qing-hai,Wu, Ju-ying,Xiao, Bo,Wang, Hui-fang,Dai, Quan-hou.

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