干旱区生态环境知识资源中心(Arid): Mapping Soil Texture Based on Field Soil Moisture Observations at a High Temporal Resolution in an Oasis Agricultural Area

Arid

	Mapping Soil Texture Based on Field Soil Moisture Observations at a High Temporal Resolution in an Oasis Agricultural Area
	Yang Renmin; Liu Feng; Zhang Ganlin; Zhao Yuguo; Li Decheng; Yang Jinling; Yang Fei; Yang Fan
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2016
卷号	26 期号:5 页码:699-708
英文摘要	Due to the almost homogeneous topography in low relief areas, it is usually difficult to make accurate predictions of soil properties using topographic covariates. In this study, we examined how time series of field soil moisture observations can be used to estimate soil texture in an oasis agricultural area with low relief in the semi-arid region of northwest China. Time series of field-observed soil moisture variations were recorded for 132 h beginning at the end of an irrigation event during which the surface soil was saturated. Spatial correlation between two time-adjacent soil moisture conditions was used to select the factors for fuzzy c-means clustering. In each of the ten generated clusters, soil texture of the soil sample with the maximum fuzzy membership value was taken as the cluster centroid. Finally, a linearly weighted average was used to predict soil texture from the centroids. The results showed that soil moisture increased with the increase of clay and silt contents, but decreased with the increase of sand content. The spatial patterns of soil moisture changed during the entire soil drying phase. We assumed that these changes were mainly caused by spatial heterogeneity of soil texture. A total of 64 independent samples were used to evaluate the prediction accuracy. The root mean square error (RMSE) values of clay, silt and sand were 1.63, 2.81 and 3.71, respectively. The mean relative error (RE) values were 9.57% for clay, 3.77% for silt and 12.83% for sand. It could be concluded that the method used in this study was effective for soil texture mapping in the low-relief oasis agricultural area and could be applicable in other similar irrigation agricultural areas.
英文关键词	digital soil mapping fuzzy c-means clustering low relief particle-size distribution semi-arid region water content
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5786502
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335701
作者单位	Yang Renmin, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Liu Feng, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Zhang Ganlin, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Zhao Yuguo, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Li Decheng, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Yang Jinling, Institute of Soil Science, Chinese Academy of Sciences, State Key Laboratory of Soil and Sustainable Agriculture, Nanjing, Jiangsu 210008, China.; Yang Fei, Institute of Soil Science, Chinese Academy of Science...
推荐引用方式 GB/T 7714	Yang Renmin,Liu Feng,Zhang Ganlin,et al. Mapping Soil Texture Based on Field Soil Moisture Observations at a High Temporal Resolution in an Oasis Agricultural Area[J],2016,26(5):699-708.
APA	Yang Renmin.,Liu Feng.,Zhang Ganlin.,Zhao Yuguo.,Li Decheng.,...&Yang Fan.(2016).Mapping Soil Texture Based on Field Soil Moisture Observations at a High Temporal Resolution in an Oasis Agricultural Area.Pedosphere,26(5),699-708.
MLA	Yang Renmin,et al."Mapping Soil Texture Based on Field Soil Moisture Observations at a High Temporal Resolution in an Oasis Agricultural Area".Pedosphere 26.5(2016):699-708.