干旱区生态环境知识资源中心(Arid): 黄土丘陵区林草景观界面雨后土壤水分空间变异规律

Arid

	黄土丘陵区林草景观界面雨后土壤水分空间变异规律
其他题名	Spatial heterogeneity of soil moisture after raining at forest-grassland landscape boundary in hilly area of Loess Plateau
	尤文忠 1; 曾德慧 1; 刘明国 2; 宋西德 3; 叶彦辉 3; 张永 3
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2005
卷号	16 期号:9 页码:1591-1596
中文摘要	对黄土丘陵区刺槐林一草地景观界面上雨后土壤表层（0～10cm）和亚表层（10～20cm）水分的空间变异规律进行了研究．经典统计学分析表明，草地两层的土壤含水量分别高于林地；林草界面两层的土壤含水量均为弱变异程度，并具有明显的生态梯度．移动窗口法分析表明，林草界面对土壤表层和亚表层的水分影响范围为边界两侧4m、3m，影响域分别为8m、6m．地统计学分析表明，草地两层土壤含水量空间分布均表现为纯块金效应，林地两层均可拟合成线性模型，而林草界面两层均可拟合成球状模型；林草界面土壤表层、亚表层水分空间依赖性和空间自相关较强，其空间结构异质性明显高于林地和草地．克立格制图描述的林草界面土壤水分的空间分布格局为从边界处向两侧的一定距离范围内。土壤含水量呈条带状分布，而在较远的距离，水分的空间分布呈现出几个明显的斑块状．[著者文摘]
英文摘要	Soil moisture is a main factor limiting vegetation restoration in semi-arid region. In this paper, the spatial variabil-ity of different layers soil moisture after raining at the forest-grassland boundary in hilly area of Loess Plateau were studied by traditional and geostatistical analysis methods. The results showed that the moisture content in surface (0~10 cm) and subsurface soil layer (10~20 cm) of grassland was higher than that of forestland. The two layers soil moisture content at forest-grassland boundary showed a small variation but an obvious ecological distribution. By using moving split-window techniques, it was obtained that the width of edge influence in surface and subsurface layer was 8 and 6 m, respectively. Geostatistical analyses showed that the spatial distribution of two layers soil moisture had a pure nugget effect in grassland, linear model in forestland, and spherical model in forest-grassland boundary. The spatial heterogeneity of two layers soil moisture was higher at forest-grassland boundary than at forestland and grassland, which had a stronger spatial dependence and autorelation. Kriging maps expressed the spatial structural characters. The distribution of soil moisture in two layers showed a strip shape near forest edge, and a patch shape far from the edge.
中文关键词	森林-草地界面 ; 土壤水分 ; 地统计学 ; 分布格局
英文关键词	Forest-grassland boundary Soil moisture content Geostatistics Spatial distribution
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:2110202
来源机构	中国科学院沈阳应用生态研究所 ; 西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206847
作者单位	1.中国科学院沈阳应用生态研究所, 沈阳, 辽宁 110016, 中国; 2.沈阳农业大学林学院, 沈阳, 辽宁 110161, 中国; 3.西北农林科技大学林学院, 杨凌, 712100
推荐引用方式 GB/T 7714	尤文忠,曾德慧,刘明国,等. 黄土丘陵区林草景观界面雨后土壤水分空间变异规律[J]. 中国科学院沈阳应用生态研究所, 西北农林科技大学,2005,16(9):1591-1596.
APA	尤文忠,曾德慧,刘明国,宋西德,叶彦辉,&张永.(2005).黄土丘陵区林草景观界面雨后土壤水分空间变异规律.应用生态学报,16(9),1591-1596.
MLA	尤文忠,et al."黄土丘陵区林草景观界面雨后土壤水分空间变异规律".应用生态学报 16.9(2005):1591-1596.