黄土高原植被恢复过程中的土壤水分有效性评价

王俊; 屈亚潭; 刘世鹏; 王妍; 上官周平

引用本文:	王俊,屈亚潭,刘世鹏,等.黄土高原植被恢复过程中的土壤水分有效性评价[J].灌溉排水学报,0,():-.
	Wang Jun,Qu Yatan,Liu Shipeng,et al.黄土高原植被恢复过程中的土壤水分有效性评价[J].灌溉排水学报,0,():-.

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黄土高原植被恢复过程中的土壤水分有效性评价
王俊¹, 屈亚潭¹, 刘世鹏¹, 王妍¹, 上官周平²
1.延安大学生命科学学院;2.中国科学院教育部水土保持与生态环境研究中心

摘要:

【目的】植被恢复引起土壤水动力学性质的变化。土壤水分特征曲线被定义为土壤含水量与土壤吸力之间的关系。目的是研究土壤持水性与土壤水分有效性对不同植被（草地、灌木林地和乔木林地）的响应。【方法】在位于黄土高原腹地的子午岭林区，利用土壤水分特征曲线的方法测定了植被恢复过程中三种不同恢复年限的植被下的土壤持水性和土壤水分有效性。【结果】结果表明植被恢复过程中的土壤持水性和土壤水分有效性从草地到灌木林地再到乔木林地呈上升趋势。【结论】影响土壤水分特征的关键因子是土壤颗粒组成、土壤体积质量和土壤孔隙度。该结果可为植被恢复过程中土地利用类型的规划提供理论参考。

关键词: 植被类型;土壤水分特征曲线;黄土高原;土壤持水性;土壤水分有效性

DOI：

分类号:S15

基金项目:国家自然科学基金青年项目(41807520)；陕西省自然科学基金研究计划(2018JQ3074)；黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金(A314021402-1813)；延安大学科研项目(YDQ2018-21)；博士科研启动项目(YDBK2017-25)；陕西省教育厅专项科研计划项目(16JK1861)；大学生创新创业训练项目(201813066)；延安大学引导项目(YDY2017-09)。

Evaluation of soil water availability during vegetation restoration in the Loess Plateau

Wang Jun¹, Qu Yatan¹, Liu Shipeng¹, Wang Yan¹, Shangguan Zhouping²

1.College of Life Sciences, Yan''an University;2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources

Abstract:

[Objective] Vegetation restoration can lead to the variation of the soil hydrodynamic performances. Soil water characteristic curve is defined as the relationship between soil water content and soil suction. The objective is to investigate the response of soil water holding capacity and soil water availability to different land vegetation types (grassland, shrub land and forestland). [Method] The soil water holding capacity were measured and soil water availability obtained from the soil water characteristic curves at three vegetation restoration types in the Ziwuling forest region located in the central part of the Loess Plateau. [Result] Our results showed that both soil water holding capacity and soil water availability increased from grassland to shrub land to forestland during the natural vegetation restoration. [Conclusion] The soil particle composition, soil bulk density and soil porosity play the important role in the change of the soil water holding capacity and soil water availability. The results of the study could provide a helpful reference for planning the land use types during the vegetation restoration.

Key words: Vegetation types; soil water characteristic curve; the Loess Plateau; soil water holding capacity; soil water availability