Study on Soil Available Nitrogen Spatial Variation of Desert Riparian Forest in the Tarim River Upstream

doi:10.11924/j.issn.1000-6850.2013-2021

Abstract

Abstract: By using GIS, traditional descriptive statistics and geo-statistics, the author studied the spatial distribution characteristics and impact factors of soil available nitrogen (AN) content of desert riparian forests in upstream of Tarim River. The results indicated that: the spatial variability of soil AN content was moderate. The coefficient of variation was correlated with the depth of soil. The variation coefficient of 20-40 cm and 40-60 cm soil was 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, 24 and 24 for 0-20 cm, 20- 40 cm and 40-60 cm soil layers respectively. Spatial correlation of 0-20 cm soil layer soil AN was medium, Random factors and structure factors were common reasons to arouse the spatial variation of soil AN content. The spatial autocorrelations of soil AN content in the 20-40 cm and 40-60 cm soil layers were slight, random factors were main reasons. Spatial distribution of 0-20 cm soil layer AN was relatively high in central content, the spatial distribution presented the obvious flake and plaque distribution characteristics. 20-40 cm soil layer AN content was gradually reduce from south to north, presented obvious block distribution. 40-60 cm soil layer AN content was gradually reduce from northwest to southeast, presented oblique strip distribution. The study provided theoretical basis for regional ecological system recovery and reconstruction.

Wang Jiaqiang1, Liu Weiyang1, Peng Jie1, Han Lu1,2, Yu Jun1,2, Xu Xiaoqiang1. Study on Soil Available Nitrogen Spatial Variation of Desert Riparian Forest in the Tarim River Upstream[J]. Chinese Agricultural Science Bulletin, 2014, 30(1): 52-57.

References

[1]白元,徐海量,刘新华,等.塔里木河干流荒漠河岸林的空间分布与生态保护[J].自然资源学报,2013,28(5):776-785.
[2]樊向阳,齐学斌,黄仲冬,等.土壤氮素运移转化机理研究现状与展望[J].中国农学通报,2006,22(2):254-258.
[3] Barbara L B, Mark RW, Allison A. Patterns in nutrient availability and plant diversity of temperate North American wetlands[J]. Ecology,1999,7:2151-2169.
[4] Mzal M, Adams W A. heterogeneity of soil mineral nitrogen in pasture grazed by cattle[J].Journal of Soil Science,1992,56: 1160-1165.
[5]吕贻忠,马兴旺.荒漠化土壤养分变化的影响因素研究进展[J].生态环境学报,2003,12(4):473-477.
[6]思源.土壤空变异研究中地统计学的应用及其展望[J].土壤学进展, 1989,17(3):11-25.
[7] Muneto, Hirobe. Along aforest slope in soil nitrogen conversion model the spatial variability in Cryptomeria[J].European Journal of Soil Biology,1998,34(3):123-131.
[8] Cambardella C A, Moorman T B, Novak J M. Field-scale variability of soil properties in central low a soil[J].soilsci.soc.,1994,58: 1501-1511.
[9] Weindorf D C, Zhu Y. Spatial variability of soil properties at Capul in Volcano, New Mexico, USA: Implications for sampling strategy [J].Pedosphere,2010,20(2):185-197.
[10]庞夙,李廷轩,王永东,等.土壤速效氮、磷、钾含量空间变异特征及其影响因子[J].植物营养与肥料学报2009,15(1):114-120.
[11]张倩,胡胜勇,高明,等.紫色丘陵区土壤养分空间变异特征研究——以重庆市铜梁县为例[J].中国农学通报,2011,27(20):216-223.
[12]邹青,赵业婷,常庆瑞,等.黄土高原南部耕地土壤养分空间格局分析——以陕西省富县为例[J].干旱区农业研究,2012,30(3):107-113.
[13]张婵婵,张瑞芳,张建恒,等.高阳县农田土壤速效养分空间变异特征研究[J].中国生态农业学报,2013,21(6):758-764.
[14]王常慧,邢雪荣,韩兴国.草地生态系统中土壤氮素矿化影响因素的研究进展[J].应用生态学报,2004,15(11):2184-2188.
[15]杨玲,何勇,卢俊宇,等.天全河流域土壤氮素的空间分布特征及其影响因素分析[J].四川农业大学学报,2012,30(3):326-331.
[16] Cochran W G. Sampling Techniques (3rd editions) [M].New York: John Wiley Inc,1977.
[17]刘付程,史学正,于东升,等.基于地统计学和GIS的太湖典型地区土壤属性制图研究[J].土壤学报,2004,41(1):20-27.
[18]李金荣,杨振放,李金玲.不同深度土壤中氮素的空间变异研究[J].节水灌溉,2010(1):19-22.
[19]薛正平,杨星卫,段项锁,等.土壤养分空间变异及合理取样数研究[J].农业工程学报,2002,18(4):6-9.
[20]郭旭东,傅伯杰,陈利顶.河北省遵化平原土壤养分的时空变异研究——变异函数与Kriging插值分析[J].地理学报,2000,55(5): 555-566.
[21]朱红霞,陈效民,杜臻杰.基于地统计学的土壤氮素与pH的空间变异性研究[J].土壤通报,2010,41(5):1086-1090.
[22]杨秀清,韩有志.关帝山森林土壤有机碳和氮素的空间变异特征[J].林业科学研究,2011,24(2):223-229.