Spatial variability of soil water content on a cropland-grassland mixed slope land in the Loess Plateau, China

被引：0

作者：

She D. ^{[1
,2
]}

Shao M. ^{[2
]}

Yu S. ^{[1
]}

机构：

[1] Key Lab. of Efficient Irrigation-Drainage and Agricultural Soil-Water Environ. in Southern China, Ministry of Education, Hohai University

[2] State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling

来源：

Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery | 2010年 / 41卷 / 07期

关键词：

Cropland-grassland mixed land use structure; Soil water content; Spatial variability;

D O I：

10.3969/j.issn.1000-1298.2010.07.013

中图分类号：

学科分类号：

摘要：

The effects of land use structure on the spatial variation characteristics of soil water content were studied based on the survey of soil water condition on a cropland-grassland mixed slope land in the Loess Plateau. The results showed that the soil water content presented a moderate spatial variability on the slope scale. The cropland-grassland mixed land use structures significantly increased the spatial variability of soil water contents. The soil water content had obvious spatial structure. The Gaussian model and Spherical model were the best fitting descriptors for the mean soil water content of 0~60 cm soil depth under arid and moist condition respectively. Compared to the moist condition, the mean soil water content had a higher sill and range, but a lower nugget-to-sill ratio under dry condition. The interpolation map by Kriging method showed that soil water content presented a significant different plaque distribution pattern, which was consistent with the mixed land use structure on the slope. The difference in the spatial variability and distribution pattern of soil water content (0~60 cm) in the test area mainly were effected by topography, precipitation, land use and land use structure.

引用

页码：57 / 63

页数：6

共 5 条

[1]

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[2]

Hu W., Shao M., Wang Q., Study on spatial variability of soil moisture on the recultivated slope-land on the Loess Plateau, Advances in Water Science, 17, 1, pp. 74-81, (2006)

[3]

Wang J., Fu B., Qiu Y., Et al., Geostatistical analysis of soil moisture variability on Da Nangou catchment of the loess plateau, China, Environmental Geology, 41, 1-2, pp. 113-120, (2001)

[4]

Zhang J., Chen H., Su Y., Et al., Spatial variability of surface soil moisture content in depression area of karst region under moist and arid conditions, Chinese Journal of Applied Ecology, 17, 22, pp. 2277-2282, (2006)

[5]

Qiu Y., Fu B., Wang J., Et al., Spatial variability of soil moisture content and its relation to environmental indices in a semi-arid gully catchment of the Loess Plateau, China, Journal of Arid Environments, 49, 4, pp. 723-750, (2001)

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