干旱区生态环境知识资源中心(Arid): 不同干扰程度下土壤有机质空间最优插值法研究

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	不同干扰程度下土壤有机质空间最优插值法研究
其他题名	Research on a spatial optimal interpolation method of soil organic matter under different degrees of disturbance
	马利芳 1; 熊黑钢2 ; 孙迪 1; 王宁 1; 叶红云 1; 张芳 1
来源期刊	生态学报
ISSN	1000-0933
出版年	2019
卷号	39 期号:19 页码:7153-7160
中文摘要	选择最优空间插值方法对明确不同干扰程度下干旱区土壤有机质空间分布规律具有重要意义。通过对新疆阜康市土壤采样分析,分别运用普通克里格法(Ordinary Kriging,OK)、反距离权重法(inverse distance weight,IDW)、径向基函数法(radial basis function,RBF)、局部多项式法(local polynomial,LPI)4种插值方法,描述不同人为干扰程度下干旱区土壤有机质空间分布特征,以探讨其最优空间插值方法。结果表明:①随干扰程度增加,土壤有机质含量降低,空间变异性由弱到中等,变异系数由9.27%增加至28.7%;同时,土壤有机质空间自相关性逐渐降低,从无人为干扰区、人为干扰区到重度人为干扰区分别呈强烈、中等、弱相关关系,即干扰程度越强受随机因素作用越大。②虽然4种方法的插值精度均随干扰程度的增强而降低。但OK法在空间结构性较强的无人为干扰区插值效果最好,R~2为0.625;在人为干扰区及重度人为干扰区RBF法的插值精度均最高,R~2分别为0.562和0.434。该结果为寻找适合于不同干扰程度下干旱区土壤有机质的空间插值方法提供一定的科学参考。
英文摘要	Choosing the optimal spatial interpolation method is of great significance to clarify the spatial distribution of soil organic matter in arid areas under different degrees of disturbance.When sampling soil in Fukang City,Xinjiang,the Ordinary Kriging (OK) method,the inverse distance weight (IDW) method,the radial basis function (RBF) method,and the local polynomial (LPI) method were used to describe the spatial distribution characteristics of soil organic matter in arid areas under different degrees of human disturbance,so as to explore its optimal spatial interpolation method.Our analyses showed that:(1) When the degree of human disturbance was on soil was great and the content of soil organic matter was low,the spatial variability ranged from weak variation to medium variation,and the coefficient of variation increased from 9.27% to 28.7%.Meanwhile,the spatial autocorrelation of soil organic matter decreased gradually,showing strong,moderate and weak correlation from an unmanned disturbance area,a human disturbance area,and to a severe human disturbance area,respectively.The stronger the degree of human disturbance,the greater the effect of random factors on soil organic matter.(2) The interpolation accuracy of the four methods decreased with the increase of the interference degree.However,the OK method had the best interpolation effect on the unmanned disturbance area with strong spatial structure;the R~2 was 0.625.The interpolation accuracy of the RBF method was the highest in the human disturbance area and the severe disturbance area;the R~2 were 0.562 and 0.434,respectively.These results provide a scientific reference for finding a suitable spatial interpolation method for soil organic matter in arid areas with different degrees of disturbance.
中文关键词	干扰程度 ; 土壤 ; 有机质 ; 最优插值
英文关键词	degree of disturbance soil organic matter optimal interpolation
语种	中文
收录类别	CSCD
WOS类目	BIOLOGY
WOS研究方向	Life Sciences & Biomedicine - Other Topics
CSCD记录号	CSCD:6597279
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/316247
作者单位	1.新疆大学资源与环境科学学院, 绿洲生态教育部重点实验室, 乌鲁木齐, 新疆 830046, 中国; 2.北京联合大学应用文理学院, 北京 100083, 中国
推荐引用方式 GB/T 7714	马利芳,熊黑钢,孙迪,等. 不同干扰程度下土壤有机质空间最优插值法研究[J],2019,39(19):7153-7160.
APA	马利芳,熊黑钢,孙迪,王宁,叶红云,&张芳.(2019).不同干扰程度下土壤有机质空间最优插值法研究.生态学报,39(19),7153-7160.
MLA	马利芳,et al."不同干扰程度下土壤有机质空间最优插值法研究".生态学报 39.19(2019):7153-7160.