干旱区生态环境知识资源中心(Arid): 基于GIS 的沱江中游土壤全氮空间变异特征及其影响因素研究

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	基于GIS 的沱江中游土壤全氮空间变异特征及其影响因素研究
其他题名	Spatial Distribution Charateristics of Soil Total Nitrogen and Its Influence Factors in Middle Reaches of Tuojiang River Based on GIS
	张楚儿 1; 张世熔 2; 邓春梅 1; 李婷 2; 徐小逊 2
来源期刊	西南农业学报
ISSN	1001-4829
出版年	2014
卷号	27 期号:1 页码:204-209
中文摘要	本研究基于ArcGIS9.3平台,运用地统计学方法研究了沱江中游表层土壤全氮(STN)的空间变异分布特征及影响因素。结果表明,沱江中游土壤全氮含量为(1.060.02)g·kg~(-1),呈对数正态分布;研究区内水稻土(1.430.49)g·kg~(-1)全氮含量极显著高于紫色土(0.930.32)g·kg~(-1)(P<0.01),其空间分布具有明显异向性,西北部为带状分布,中部及南部呈团块状分布。成土母质显著影响了全氮的含量(P=0.000),随侵蚀程度的增强,土壤全氮含量降低。不同土地利用类型土壤全氮含量顺序为菜地、灌溉水田、果园、旱地、荒草地、有林地。土壤全氮含量与pH呈显著负相关(P=0.036),与有机质含量呈极显著正相关(P=0.000)。
英文摘要	Based on the geographic information systems,in this paper,the spatial distribution characteristics of the soil total nitrogen (STN) and the influencing factors of the surface soil in the middle reach of Tuojiang river were studies by the means of geostatistics method. The results showed that the concentration of STN in the middle reach of Tuojiang river was (1. 06 0. 02) g·kg ~(- 1) and lognormal distribution. The STN concentration was significantly higher in paddy soil (1. 43 0. 49) g·kg ~(- 1) than that in purple soil (0. 93 0. 32) g·kg ~(- 1) (P < 0. 01). The spatial distribution had the distinct characteristics of anisotropy,which tended to be zonal distribution in the northwest and clumped in the central and southern part. The STN concentration of different parent materials was significantly influenced by soil erosion intensities (P = 0. 000) and decreased with the increase of erosion status. According to the different types of land use,the order of STN concentration from high to low was vegetable field,irrigated land,orchard,arid land,grassland and forest land. There was significantly negative correlation (P = 0. 036) between STN concentration and pH and significantly positive correlation (P = 0. 000) between STN concentration and organic matter content.
中文关键词	全氮 ; 空间分布 ; 地统计学 ; 影响因素
英文关键词	Soil total nitrogen Spatial analysis Geostatistic Influencing factors
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5082306
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231923
作者单位	1.四川省土壤环境保护重点实验室, 四川省土壤环境保护重点实验室, 成都, 四川 611130, 中国; 2.四川农业大学生态环境研究所, 四川省土壤环境保护重点实验室, 成都, 四川 611130, 中国
推荐引用方式 GB/T 7714	张楚儿,张世熔,邓春梅,等. 基于GIS 的沱江中游土壤全氮空间变异特征及其影响因素研究[J],2014,27(1):204-209.
APA	张楚儿,张世熔,邓春梅,李婷,&徐小逊.(2014).基于GIS 的沱江中游土壤全氮空间变异特征及其影响因素研究.西南农业学报,27(1),204-209.
MLA	张楚儿,et al."基于GIS 的沱江中游土壤全氮空间变异特征及其影响因素研究".西南农业学报 27.1(2014):204-209.