| 不同放牧制度对荒漠草原表层土壤氮素空间异质性的影响 |
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| 引用本文： | 刘红梅,卫智军,杨静,吕世杰,吴艳玲,刘荣.不同放牧制度对荒漠草原表层土壤氮素空间异质性的影响[J].中国草地学报,2011,33(2). |
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| 作者姓名： | 刘红梅 卫智军 杨静 吕世杰 吴艳玲 刘荣 |
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| 作者单位： | 1. 内蒙古农业大学生态环境学院,内蒙古呼和浩特,010019
2. 内蒙古鄂尔多斯市草原工作站,内蒙古东胜,017000 |
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| 基金项目： | 内蒙古科技创新引导奖励资金项目，国家公益性行业(农业)科技项目 |
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| 摘 要： | 以荒漠草原不同放牧制度下表层土壤氮素含量为研究对象,采用GS+软件和地统计学分析方法对其空间异质性分布进行了研究.结果显示,划区轮牧区表层士壤碱解氮含量显著低于对照区和自由放牧区,土壤全氮含量没有发生显著性变化.样点间土壤氮素含量差异表明,表层土壤氮素含量存在空间异质性.划区轮牧使得土壤碱解氮含量和土壤全氮含量空间分布受随机因素影响大,自由放牧使土壤全氮含量空间分布受随机因素影响大,围封状态的对照区土壤碱解氮含量和土壤全氮含量空间分布几乎不受随机因素影响.划区轮牧能够减小土壤氮素空间分布的异质性,自由放牧导致表层土壤碱解氮含量空间差异较大.在划区轮牧区,土壤碱解氮含量和土壤全氮含量空间分布都比较均匀,呈片状分布,自由轮牧区土壤碱解氮整体呈破碎斑块分布.
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| 关 键 词： | 荒漠草原 土壤氮含量 空间异质性 地统计 |
Effect of Different Grazing Systems on Spatial Heterogeneity of Nitrogen in Top Soil in Desert Steppe |
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| LIU Hong-mei,WEI Zhi-jun,YANG Jing,LV Shi-jie,WU Yan-ling,LIU Rong.Effect of Different Grazing Systems on Spatial Heterogeneity of Nitrogen in Top Soil in Desert Steppe[J].Chinese Journal of Grassland,2011,33(2). |
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| Authors: | LIU Hong-mei WEI Zhi-jun YANG Jing LV Shi-jie WU Yan-ling LIU Rong |
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| Institution: | LIU Hong-mei1,WEI Zhi-jun1,YANG Jing1,LV Shi-jie1,WU Yan-ling1,LIU Rong2(1.Inner Mongolia Agricultural University,Hohhot 010019,China,2.Grassland Workstation of Ordos,Dongsheng 017000,China) |
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| Abstract: | The spatial heterogeneity of nitrogen in top soil under different grazing systems in desert steppe was analyzed with GS+ software and geo-statistics analysis method.The results showed that affected by different grazing systems,the nitrogen content in topsoil in rotational grazing area was significantly lower than that in continuous grazing area and banning grazing area,the content of total nitrogen was not significant diversification.Differences in nitrogen content in samples showed that there was spatial h... |
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| Keywords: | Desert steppe Soil nitrogen Spatial heterogeneity Geo-statistics |
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