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遥感技术与应用  2011, Vol. 26 Issue (6): 814-820    DOI: 10.11873/j.issn.1004-0323.2011.6.814
遥感应用     
干旱区冲积平原绿洲土壤养分的时空变异性研究—以新疆农八师121团为例
高小红1,罗格平2,陈曦2
(1.青海师范大学生命与地理科学学院,青海 西宁810008;
2.中国科学院新疆生态与地理研究所,新疆 乌鲁木齐830011)
Spatio-temporal Variability of Soil Nutrients in Alluvial\|plain Oasis in Arid Zone —A Case Study of the Regiment 121 in Xinjiang
Gao Xiaohong1,Luo Geping2,Chen Xi2
(1.Qinghai Normal University,Xining 810008,China;
2.Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China)
 全文: PDF(1438 KB)  
摘要:

以新疆农八师121团为研究区,根据1982年第二次全国土壤普查养分数据和2004年5月采样获得的土壤养分数据,利用地统计学和GIS空间分析技术,研究了冲积平原绿洲土壤养分的时空变异性。结果表明:速效钾具有强烈的空间相关性,全氮、速效磷和碱解氮具有中等的空间相关性;而全磷和有机质则从1982年具有强烈空间相关性逐渐演变为2004年具有中等的空间相关性。分析认为:长期的耕作、施肥的变化、种植结构的变化等随机性人为因素,导致全氮、速效磷、碱解氮、全磷和有机质从主要由气候、母质等结构性因素影响逐渐演变为结构性因素和人为因素共同影响,尤其是全磷和有机质受到人为因素的影响逐渐加大;而速效钾则主要受研究区域土壤母质、土壤类型等的影响。

关键词: 土壤养分空间变异地统计学GIS冲积平原绿洲    
Abstract:

Taking the Regiment 121 of the 8th Agricultural Division,located in the manasi oasis in the north slope of Tianshan mountain,in Xinjiang,as the study area,the paper analyzed the spatio\|temporal variability of soil nutrients by the combining method of geostatistics,traditional statistics analysis and GIS technique.The results showed that:the contents of soil organic matter decreased significantly from 1982 to 2004,whereas the total N,total P,available N,available P and available K increased obviously,which suggesting,after twenty\|two years of cultivation and fertilization,N and P contents in soils has significantly increased.
The Nugget/Sill ratios revealed that spatial correlation of the available K belongs to a strong class,suggesting that spatial distribution was mainly affected by soil parent material,while available N and total N has a moderate spatial correlation,indicating theirs spatial distribution was jointly affected by soil parent materialand fertilizer,cultivation etc.The Nugget/Sill ratios of total P and OM was increased to 39.11% and 45.51% in 2004 from 15.74% and 17.57% in 1982 respectively.The changes in the Nugget/Sill ratios indicated that the strong spatial correlation of the total P and OM has changed into a moderate spatial correlation,suggesting that the stochastic factors such as fertilizer,cultivation,irrigation and crop structure during the 22 years have affected,and the soil nutrients were gradually jointly affected by the structural factors and stochastic factors.The contents of soil organic matter,total N,total P,available N and available P in Manasi river oasis were lower than those in Sangong river watershed oasis,but the content of available K,was higher than that of Sangong river watershed in 1982,and lower than that in 2004.  Spatial variability of soil nutrients and soil organic matter in Manasi river oasis was lower than that of Sangong river watershed oasis,which was probably related to high fertilization in long\|term cultivation and crop in Sangong river watershed.

Key words: Soil nutrients    Spatio-temporal variability    GIS    Alluvial-plain oasis in arid zones
收稿日期: 2011-04-28 出版日期: 2012-01-10
:  S 158.3  
基金资助:

国家973计划项目(2009CB825105),中国科学院“西部之光”人才培养计划项目(2006(378)),国家自然科学基金项目(40861022)资助。

通讯作者: 罗格平(1968-),男,湖南湘乡人,研究员,主要从事土地利用/土地覆被变化、遥感与GIS应用研究等工作。     E-mail: luogp@ms.xjb.ac.cn
作者简介: 高小红(1963-),女,陕西白水人,教授,主要从事土地利用/土地覆被变化、遥感与GIS应用研究等工作。Email:xiaohonggao226@gmail.com。
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引用本文:

高小红,罗格平,陈曦. 干旱区冲积平原绿洲土壤养分的时空变异性研究—以新疆农八师121团为例[J]. 遥感技术与应用, 2011, 26(6): 814-820.

Gao Xiaohong,Luo Geping,Chen Xi. Spatio-temporal Variability of Soil Nutrients in Alluvial\|plain Oasis in Arid Zone —A Case Study of the Regiment 121 in Xinjiang. Remote Sensing Technology and Application, 2011, 26(6): 814-820.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.6.814        http://www.rsta.ac.cn/CN/Y2011/V26/I6/814

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