[1]王家强,彭杰,柳维扬,等.干旱区荒漠河岸林土壤全氮空间变异特征研究[J].西北林学院学报,2014,29(02):12-19.[doi:doi:10.3969/j.issn.1001-7461.2014.02.03]
　WANG Jia-qiang,PENG Jie,LIU Wei-yang,et al. Spatial Heterogeneity Characteristic of Soil Total Nitrogen in Desert Riparian Forest of Arid Area[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2014,29(02):12-19.[doi:doi:10.3969/j.issn.1001-7461.2014.02.03]
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干旱区荒漠河岸林土壤全氮空间变异特征研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第29卷
期数:
2014年02期
页码:
12-19
栏目:
出版日期:
2014-03-30

文章信息/Info

Title:
 Spatial Heterogeneity Characteristic of Soil Total Nitrogen in Desert Riparian Forest of Arid Area
文章编号:
1001-7461（2014）-02-0012-07
作者:
 王家强1;  彭杰1; 柳维扬1; 韩路1; 2;  于军1; 2*
 (1.塔里木大学 植物科学学院，新疆 阿拉尔 843300; 2.新疆生产建设团 塔里木盆地植物资源保护与利用重点实验室，新疆 阿拉尔 843300）
Author(s):
 WANG Jia-qiang1;  PENG Jie1;  LIU Wei-yang1;  HAN Lu1; 2;  YU Jun1; 2*
 (1. College of Plant Science, Tarim University, Alar, Xinjiang 843300, China; 2. Key Laboratory of Conservation and Utilization of Material Resources of the Tarim Basin of Xinjiang Production and Construction Corps, Tarim University, Alar, Xinjiang 843300, China)
关键词:
 ; 荒漠河岸林; 土壤全氮; 空间变异
Keywords:
 ; desert riparian forest;  soil total nitrogen;  spatial variability
分类号:
S718.516
DOI:
doi:10.3969/j.issn.1001-7461.2014.02.03
文献标志码:
A
摘要:
 采用GIS、统计学与地统计学的方法，研究塔里木河流域上游三源交汇区荒漠河岸林土壤全氮空间分布特征及其影响因素。结果表明：林区土壤的空间变异性均为中等变异性；变异系数的大小与土壤深度有关，20~40、40~60 cm土壤的变异系数大于0~20 cm土层；采样数量从精确性、经济性及采样效率3个方面分析，确定了合理的采样数量，0~20 cm土层的采样数15个，20~40 cm土层的采样数22个，40~60 cm土层的采样数22个；各层土壤全氮的空间相关性均表现为弱相关性；且土壤全氮的空间变异性主要是随机因素作用的结果，在研究区尺度上由随机因素引起空间异质性的比例明显大于结构性因素；林区土壤全氮的空间分布表现为0~20 cm土层土壤全氮含量在南部和北部的含量较低，而东部、中部和西部的含量较高；20~40 cm土层北部普遍较低，中南部全氮含量较高；40~60 cm土层全氮含量西北部较低，而东南部较高；3个土层土壤全氮的空间分布格局与农田所处的位置有关。
Abstract:
 By using GIS, traditional descriptive statistics and geo-statistics, this paper studied the spatial distribution characteristics and impact factors of soil total nitrogen (TN) content of desert riparian forests in upstream of Tarim River. The results indicated that the spatial variability of soil TN content was in the moderate level. The coefficient of variation was correlated with the depth of the soil. The variation coefficients of 20-40 cm and 40-60 cm soil were greater than that of 0-20 cm soil. The numbers of soil samples were analyzed based on accuracy, economy and efficiency. The reasonable numbers of samples were 15, 22 and 22 for 0-20 cm, 20-40 cm and 40-60 cm soil layers, respectively. The spatial autocorrelations of soil TN content in the three layers were slight. Random factors were main reasons to arouse the spatial variation of soil TN content. With respect to 0-20 cm soil layer, the regions with higher soil TN content were mainly in the east, middle and west of the study area; while those with lower soil TN content mainly in north and northwest of the study area for 20-40 cm and 40-60 cm soil layers, respectively. The spatial distribution pattern of soil TN content in the three soil layers was related to farmland location.

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备注/Memo

备注/Memo:
 收稿日期：2013-08-12修回日期：2013-10-08
基金项目：国家自然科学基金（40961028、41061031、41161048、31260140）;973计划前期研究专项（2011CB411909）;兵团青年科技创新资金专项（2012CB020）;塔里木大学校长基金硕士资助项目（TDZKSS201101）。
作者简介：王家强，男，硕士，研究方向：土壤生态与3S技术应用。E-mail:wjqzky@163.com
*通信作者：于军，男，教授，研究方向：森林生态学。E-mail：tdakjc@163.com
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