干旱区生态环境知识资源中心(Arid): 渭-库绿洲耕层土壤水盐空间分异特征研究

Arid

	渭-库绿洲耕层土壤水盐空间分异特征研究
其他题名	Spatial Variation Characteristics of Soil Water and Salt in Cultivated Layer in the Delta Oasis of the Weigan-Kuqa Rivers
	穆耶赛尔·肉孜; 王雪梅
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2021
卷号	36 期号:6 页码:39-46
中文摘要	探索干旱区绿洲耕层土壤水盐空间分异规律对土壤盐渍化防治具有十分重要的意义。以渭干河-库车河三角洲绿洲为研究区,采用反距离加权、局部多项式、径向基函数和普通克里金插值方法进行土壤水盐含量的空间插值,并利用均方根误差、平均相对误差、平均绝对误差以及决定系数对4种插值结果进行精度验证,并分析不同海拔和土地利用类型下的土壤水盐空间分异特征。结果表明:1)研究区耕层土壤水盐空间变异程度由大到小依次为土壤总盐>电导率>含水量>pH值,pH值属于弱空间变异,电导率和土壤总盐属于强空间变异,土壤含水量为中度空间变异。2)对比4种插值方法的精度,由高到低依次为反距离加权>径向基函数>普通克里金>局部多项式,反距离加权模型的决定系数最高,均方根误差、平均相对误差和平均绝对误差均最小。3)研究区耕层土壤含水量由东向西递增,而pH值、电导率和土壤总盐由东向西递减,均呈现出较为明显的条带状分布规律。在不同海拔高度和土地利用类型下,土壤水盐含量呈现出显著的空间差异(P<0.05)。
英文摘要	It is of great significance to explore the spatial differentiation of soil water and salt in the surface layer of oasis in arid areas for the prevention and improvement of soil salinization.Taking the delta oasis of the Weigan-Kuqa rivers as the study area,the inverse distance weighting,local polynomial,radial basis function and ordinary Kriging interpolation methods were used to interpolate the soil water and salt contents.The root mean square error,mean relative error,mean absolute error and the coefficient of determination were used to verify the accuracy of the four interpolation results.The spatial differentiation characteristics of soil water and salt under different altitudes and land use types were analyzed.The results showed that 1) the spatial variability of soil water and salt in the cultivated layer of the study area was in the order of soil total salt>electrical conductivity>water content>pH.2) The accuracy of the four interpolation methods was in the order of inverse distance weighting>radial basis function>ordinary Kriging>local polynomial.The inverse distance weighted model had the highest determination coefficient and the lowest root-mean-square error,average relative error and average absolute error.3) The soil water content of the cultivated layer in the study area increased from east to west,and the pH,electrical conductivity and total soil salt contents decreased from east to west,all of them showed obvious strip-like distribution law.At different altitudes and types of land use,soil water and salt contents showed significant spatial differences (P<0.05).
中文关键词	土壤水盐 ; 空间分异 ; 反距离加权插值 ; 海拔高度 ; 土地利用类型
英文关键词	soil water and salt spatial differentiation inverse distance weighted interpolation altitude land use type
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Forestry
CSCD记录号	CSCD:7110449
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377984
作者单位	穆耶赛尔·肉孜, 新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国.; 王雪梅, 新疆师范大学地理科学与旅游学院;;新疆维吾尔自治区重点实验室/新疆干旱区湖泊环境与资源实验室, ;;新疆维吾尔自治区重点实验室;;新疆干旱区湖泊环境与资源实验室, 乌鲁木齐;;乌鲁木齐, 新疆;;新疆 830054;;830054, 中国.
推荐引用方式 GB/T 7714	穆耶赛尔·肉孜,王雪梅. 渭-库绿洲耕层土壤水盐空间分异特征研究[J],2021,36(6):39-46.
APA	穆耶赛尔·肉孜,&王雪梅.(2021).渭-库绿洲耕层土壤水盐空间分异特征研究.西北林学院学报,36(6),39-46.
MLA	穆耶赛尔·肉孜,et al."渭-库绿洲耕层土壤水盐空间分异特征研究".西北林学院学报 36.6(2021):39-46.