[1]杨美玲,王雪梅,罗梦媛.基于GIS的库车县耕层土壤养分空间变异研究[J].水土保持研究,2015,22(01):61-65.
　YANG Meiling,WANG Xuemei,LUO Mengyuan.Study on Spatial Variability of Topsoil Nutrients in Kuqa County Based on GIS[J].Research of Soil and Water Conservation,2015,22(01):61-65.
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基于GIS的库车县耕层土壤养分空间变异研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 22 期数: 2015年01期 页码: 61-65 栏目: 出版日期: 2015-02-28
Title:
Study on Spatial Variability of Topsoil Nutrients in Kuqa County Based on GIS
作者:
杨美玲1, 王雪梅1,2, 罗梦媛1
1. 新疆师范大学 地理科学与旅游学院, 乌鲁木齐 830054;
2. 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 830054
Author(s):
YANG Meiling1, WANG Xuemei1,2, LUO Mengyuan1
1. College of Geography Science and Tourism, Xinjiang Normal University, Urumqi 830054, China;
2. Xinjiang Uygur Autonomous Region Key Laboratory Xinjiang Laboratory of Lake Environment and Resources in Arid Zone, Urumqi 830054, China
关键词:
空间变异; 土壤养分; 耕层土壤; 库车县
Keywords:
spatial variability; soil nutrients; topsoil; Kuqa County
分类号:
S158.2;S158.5
摘要:
基于GIS和地统计学分析方法，对库车县耕层土壤（0—20 cm）养分元素的空间变异特征进行了研究。结果表明：有机质、全氮、碱解氮、有效磷和速效钾均为中等程度的空间变异性，变异系数为19.11%~65.34%。有机质和全氮的理论模型符合球状模型，碱解氮、有效磷和速效钾的理论模型符合指数模型。有机质、全氮、碱解氮、有效磷和速效钾具有中等程度的空间自相关性，其空间变异主要受土壤类型、土壤质地以及施肥影响。从空间分布格局来看，有机质、全氮、碱解氮和速效钾的含量在东南方向上呈现明显的片状和斑块状分布，并由东南向西北发生递减，而有效磷主要呈斑块状分布，其含量在西南方向高于东北方向，研究区耕层土壤养分总体呈现出东南方向含量高于西北方向。
Abstract:
Based on the analysis methods of GIS and geostatistics, spatial variability characteristics of topsoil (0—20 cm) nutrient elements in Kuqa County were studied, the results showed that organic matter, total nitrogen, phosphorus and potassium are moderate degree of spatial variability and the coefficients of variation are 19.11%~65.34%. Theoretical models of organic matter and total nitrogen are fitful of spherical model, nitrogen, phosphorus and potassium fit the exponential model. Organic matter, total nitrogen, available nitrogen, phosphorus and potassium present a moderate degree of spatial autocorrelation due to combined effect of soil type, soil texture and fertilization. From the spatial distribution, the contents of organic matter, total nitrogen, available nitrogen and potassium showed significant flaky and patchy distribution in the southeast, decremented from southeast to the northwest, while phosphorus mainly presented plaques massive distribution, which was higher than the northeast to the southwest. In the study area, the contents of topsoil nutrients overall present the patterns that the southeast is higher than northwest direction.

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备注/Memo

收稿日期:2014-04-30;改回日期:2014-05-10。
基金项目:国家自然科学基金（41261051）；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”基金（XJDX0909-2010-08）；新疆师范大学学术科技创新基金；国家级大学生创新创业训练计划项目（201410762022）
作者简介:杨美玲(1993-),女,新疆乌鲁木齐人,本科生,研究方向:土地资源与地理信息系统。E-mail:1499969548@qq.com
通讯作者:王雪梅(1976-),女,江苏铜山人,博士,副教授,硕士生导师,研究方向:干旱区资源环境遥感应用研究。E-mail:502529672@qq.com

更新日期/Last Update: 1900-01-01