黄土高原植被恢复过程中土壤水分有效性评价

张永旺; 王 俊; 屈亚潭; 刘世鹏; 王 妍; 上官周平

引用本文:	张永旺,王俊,屈亚潭,等.黄土高原植被恢复过程中土壤水分有效性评价[J].灌溉排水学报,2020,39(6):79-85.
	,et al.黄土高原植被恢复过程中土壤水分有效性评价[J].灌溉排水学报,2020,39(6):79-85.

【打印本页】【下载PDF全文】【查看/发表评论】【EndNote】【RefMan】【BibTex】

←前一篇|后一篇→

过刊浏览高级检索

本文已被：浏览 1456次下载 2759次	码上扫一扫！
分享到：微信更多字体:加大+\|默认\|缩小-
黄土高原植被恢复过程中土壤水分有效性评价
张永旺，王俊，屈亚潭，刘世鹏，王妍，上官周平
1.延安大学生命科学学院，陕西延安，716000；2.中国科学院教育部水土保持与生态环境研究中心，陕西杨凌，712100

摘要:

【目的】探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测定了植被恢复过程中3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】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：10.13522/j.cnki.ggps.2019418

分类号:

基金项目:

Evaluating Bioavailable Soil Water during Vegetation Restoration in the Loess Plateau

ZHANG Yongwang, WANG Jun, QU Yatan, LIU Shipeng, WANG Yan, SHANGGUAN Zhouping

1.College of Life Sciences, Yan’an University, Yan’an 716000, China; 2. Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China

Abstract:

【Objective】Vegetation restoration alerts soil water dynamics due to the changes in soil structure and evapotranspiration. The relationship between soil structural change and its ability to hold water can be described by the soil water characteristic curve. The objective of this paper is to investigate the variation in soil water characteristic curve and bioavailability of soil water under different land coverages: grassland, shrub land and forestland.【Method】Intact soil samples were taken from the field under the three vegetation coverages in Ziwuling forest region at the center of the Loess Plateau. The water characteristic curves of all samples were measured, and the bioavailable water in each soil was calculated from these curves.【Result】Both water holding capacity and bioavailable water of the soil increased in the order of grassland < shrub land < forestland during the vegetation restoration process, in which soil particle composition, soil bulk density and porosity play an important role.【Conclusion】Results of this study could provide guidance for planning land use change and vegetation restoration.

Key words: vegetation types; soil water characteristic curve; the loess plateau; soil water holding capacity; soil water availability