摘要
对土壤盐分空间变异规律深刻的理解,是进行克里金精确估值与盐渍地分区治理的前提工作。针对目前渭-库绿洲盐渍化演化的复杂性问题,文中在取样检测的基础上,运用地统计学方法和原理,对土壤盐分空间异质性与分布规律进行分析。研究结果表明:三层土壤盐分变异均受随机因素与结构因素共同作用;变异系数从表层到深层先减小后增大,变异方向为西北-东南;表层盐分为中等相关性,变程大,各项异性比小,深层为强相关性,变程小,各项异性比大;含盐量由绿洲内部向绿洲边缘逐渐递增。研究为土壤盐分变异规律的深刻理解提供了较为简明的思路,为盐渍化治理方案的制定与实施提供了一定科学依据。
A deep understanding of the spatial variation law of soil salinity is the prerequisite for accurate Kriging valuation and zoning management of saline land.Aiming at the complexity of salinization evolution in the oasis of Weigan and Kuqa rivers,based on sampling and detection,the spatial heterogeneity and distribution law of soil salt were analyzed by using geostatistical methods and principles.The results show that the salt variation of the three layers of soil is affected by random factors and structural factors.The variation coefficient firstly decreases and then increases from the surface to the deep layer,and the variation direction is from northwest to southeast.The surface salinity shows medium correlation,large variation range and small anisotropy ratio,while the deep salinity shows strong correlation,small variation range and large anisotropy ratio.The salt content increases gradually from the interior of the oasis to the edge of the oasis.The study provides a concise idea for the deep understanding of the law of soil salt variation,and provides a scientific basis for the formulation and implementation of salinization control scheme.
作者
鲁力
李升
高远
葛燕燕
LU Li;LI Sheng;GAO Yuan;GE Yanyan(College of Geology and Mineral Engineering,Xinjiang University,Urumqi 830046,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2022年第3期136-142,共7页
Journal of Arid Land Resources and Environment
关键词
地统计学
空间变异
方向性
变程
geostatistics
spatial variation
directional
change range
作者简介
鲁力(1994-),男,江苏南京人,硕士,主要从事水文地质、环境地质方面研究。E-mail:963744173@qq.com;通讯作者:李升(1980-),男,新疆库尔勒人,副教授,博士,主要从事水文地质方面的研究工作。E-mail:lisheng2997@163.com。
