干旱区生态环境知识资源中心(Arid): 砒砂岩区典型坡面土壤水分空间分布特征

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	砒砂岩区典型坡面土壤水分空间分布特征
其他题名	Spatial distribution characteristics of soil moisture on a typical slope in the feldspathic sandstone area of Inner Mongolia
	辛军伟; 尚振坤; 王俊鹏; 朱世雷; 甄庆; 张兴昌; 马炳召
来源期刊	中国水土保持科学
ISSN	2096-2673
出版年	2021
卷号	19 期号:1 页码:52-59
中文摘要	土壤水分是水文循环的重要组成部分,是干旱半干旱地区植被重建和生态环境修复的重要影响因素。探明坡面土壤水分的空间分布特征,对于植被重建具有指导意义。采用经典统计学和地统计学相结合的方式,分析坡面土壤水分的分布规律、变异特征和空间结构。结果表明: 1)坡面0 ~ 200 cm土壤平均含水量介于9.93% ~ 13.88%之间,随土层深度的增加而增大,各层土壤水分均为中等程度变异,变异系数随深度的增加呈现减小趋势。 2)坡面不同深度土壤水分的差异与坡位有关。浅层土壤水分坡中和坡下高于坡上,而在60 cm以下正好相反,土壤水分坡上高于坡下。3)高斯模型和球状模型能拟合大部分土层的空间结构,除60 ~ 80 cm土层以外,其他土层土壤含水量均为强空间依赖性。4)最小变程为15.60 m,可以为后续样点布设提供参考依据。该研究结果有助于了解砒砂岩地区土壤水分分布特征,对该地区土壤水资源评价和植被重建具有重要意义。0 ~ 40 cm土层坡中和坡下的土壤含水量比坡上高,坡下和坡中更有利于植被的恢复。
英文摘要	[Background] Soil moisture is an important part of hydrological cycle,and significantly influences vegetation recovery and ecological environment restoration in arid and semiarid area. Understanding the spatial distribution characteristics of soil moisture on the slope is crucial for vegetation restoration in the feldspathic sandstone area,which is widely distributed in the border of Shanxi, Shaanxi,and Inner Mongolia in the north of the Loess Plateau. [Methods]A case study was conducted to reveal the spatial distribution characteristics of soil moisture,and 0 - 600 cm deep layer soil moisture samples were obtained by soil drill sampling. Soil samples were collected at 10 cm intervals in the surface 0 - 20 cm layer,and 20 cm intervals under 20 cm layer,and totally 862 samples were obtained. Classical statistics and geo-statistics were used to analyze the distribution pattern,variation characteristics and spatial structure of soil moisture on slope. [Results] 1) Soil moisture content ranged from 9.93% - 13.88% in 0 - 200 cm,and increased with the increasing of soil depth. The soil moisture of each layer showed moderate variation,and the coefficient of variation decreased with the increasing soil depth. 2) The differences of soil moisture in different layers were affected by slope position. The soil moisture content in surface layer (0 - 60 cm) was higher in the middle and low slope than that in the up slope; on the contrary,it was higher in the up slope than that in the low slope in the deep soil layers (below 60 cm). 3) Geostatistical analysis indicated that Gauss model and Spherical model could well fit the spatial structure of most soil layers,and the soil moisture had strong spatial dependence except for 60 - 80 cm soil layers. 4) The minimum range was 15.60 m,which could provide references for the subsequent sample sites layout. [Conclusions] The results are conducive to understanding the distribution characteristics of soil moisture in the feldspathic sandstone area,which is of great significance for the estimation of soil water resources and vegetation reconstruction in the area. The thickness of soil layer and the soil moisture content are affected by slope position. Soil layer thickness in the middle and low slope is thicker than that in the up slope,and the soil moisture content of surface soil in the middle and low slope is higher than that in the up slope,and thus,the water condition in the middle and low slope is more beneficial to vegetation restoration,while the water condition in the up slope is not conducive to vegetation restoration.
中文关键词	土壤水分 ; 植被重建 ; 空间变异 ; 深剖面 ; 砒砂岩区
英文关键词	soil moisture vegetation restoration spatial variability deep profile feldspathic sandstone area
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6926607
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378129
作者单位	辛军伟, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 尚振坤, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 王俊鹏, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 朱世雷, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 甄庆, 西北农林科技大学水土保持研究所;;中国科学院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室;;, 杨凌;;杨凌, 陕西;;陕西 712100;;712100, 中国.; 马炳召, 西北农林科技大学水土保持研究所;;中国科学院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室;;, 杨凌;;杨凌, 陕西;;陕西 712100;;712100, 中国.; 张兴昌, 西北农林科技大学资源环境学院;;西北农林科技大学水土保持研究所;;中国科学院水利部水土保持研究所, ;;黄土高原土壤侵蚀与旱地农业国家重点实验室;;, 杨凌;;杨凌;;杨凌, 陕西;;陕西;;陕西 712100;;712100;;712100, 中国.
推荐引用方式 GB/T 7714	辛军伟,尚振坤,王俊鹏,等. 砒砂岩区典型坡面土壤水分空间分布特征[J],2021,19(1):52-59.
APA	辛军伟.,尚振坤.,王俊鹏.,朱世雷.,甄庆.,...&马炳召.(2021).砒砂岩区典型坡面土壤水分空间分布特征.中国水土保持科学,19(1),52-59.
MLA	辛军伟,et al."砒砂岩区典型坡面土壤水分空间分布特征".中国水土保持科学 19.1(2021):52-59.