Spatial Variation of Soil Nutrients in Arable Layer in Typical Arid Desert Oasis Area

WANG Xuemei; CHAI Zhongping; WU Hongqi

doi:10.13961/j.cnki.stbctb.2016.01.010

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Spatial Variation of Soil Nutrients in Arable Layer in Typical Arid Desert Oasis Area

- Spatial Variation of Soil Nutrients in Arable Layer in Typical Arid Desert Oasis Area
- Bulletin of Soiland Water Conservation Vol. 36, Issue 1, Pages: 51-56(2016)
- 作者机构：
  
  1. 新疆师范大学地理科学与旅游学院,新疆,乌鲁木齐,830054
  2. 新疆维吾尔自治区重点实验室草业与环境新疆干旱区湖泊环境与资源实验室,新疆,乌鲁木齐,830054
  3. 新疆农业大学草业与环境科学学院,新疆,乌鲁木齐,830052
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.01.010
  CLC：
- Published：2016
- 稿件说明：
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WANG Xuemei, CHAI Zhongping, WU Hongqi. Spatial Variation of Soil Nutrients in Arable Layer in Typical Arid Desert Oasis Area[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 51-56.
DOI：

WANG Xuemei, CHAI Zhongping, WU Hongqi. Spatial Variation of Soil Nutrients in Arable Layer in Typical Arid Desert Oasis Area[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 51-56. DOI： 10.13961/j.cnki.stbctb.2016.01.010.

摘要

[目的

]

对干旱荒漠绿洲区耕层土壤养分空间特征进行研究

为绿洲土地资源的合理开发利用

以及土壤施肥方案的科学制定提供理论依据. [方法

]

基于GIS与地统计学方法对新疆维吾尔自治区精河县耕层土壤养分空间变异特征及影响因素进行分析. [结果

]

(1) 研究区内有效磷的空间变异性较强(变异系数C

为67.45%)

速效钾的空间变异性最弱(C

为40.76%).(2) 有机质、碱解氮和有效磷存在较强的空间自相关性

其空间变异主要由地形、土壤质地和土壤类型等结构性因素所引起;速效钾为中等程度的空间自相关性

其空间变异不仅受结构性因素的影响

还与随机因素(即施肥和种植结构)有关.(3) 各土壤养分元素在绿洲内部具有较高含量的片状和斑块状分布

而在绿洲外缘

其含量相对较低

且呈大面积的片状分布. [结论

]

精河县耕层土壤养分总体呈现出有机肥含量缺乏

磷钾肥相对丰富的特点.

Abstract

[Objective] We aimed to study the spatial characteristics of arable layer soil nutrient elements in the arid desert-oasis region in order to provide the theoretical basis for the rational development and utilization of land resources in oasis. [Methods] Based on the methods of GIS and geo-statistics

the spatial variation of the soil nutrient in arable layer and its driving factors were analyzed in Jinghe County

Xinjiang Uygur Autonomous Region. [Results] (1) The coefficient of variation(Cv) of effective phosphorus was the greatest (Cv was 67.45%)

while the spatial variability of rapidly-available potassium was the least(Cv was 40.76%). (2) Organic matter

alkali-hydro nitrogen and effective phosphorus showed a strong spatial autocorrelation

and the spatial variability was mainly caused by structural factors such as terrain

soil texture and soil type. Rapidly-available potassium showed a moderate spatial auto-correlation. The spatial variability of rapidly-available potassium was not only affected by the structural factors

but also by the random factors such as fertilization and the planting structure. (3) The soil nutrient elements in the central area of Jinghe County oasis showed a patchy distribution

while in the outer of oasis

the content of soil nutrient elements was relatively low

and it showed a sheet distribution. [Conclusion] Organic matter is lacing

while phosphate and potash fertilizer is abundant in the arable layer soil in Jinghe County.

关键词

Keywords

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