| 科尔沁沙地丘间低地-流动沙丘联合体土壤含水量的空间异质性 |
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| 引用本文： | 苗纯萍,李雪华,蒋德明,贾美玉,韩旭.科尔沁沙地丘间低地-流动沙丘联合体土壤含水量的空间异质性[J].东北林业大学学报,2015(3):90-94. |
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| 作者姓名： | 苗纯萍 李雪华 蒋德明 贾美玉 韩旭 |
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| 作者单位： | 中国科学院沈阳应用生态研究所，沈阳，110016 |
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| 基金项目： | 国家自然科学基金项目(41271115);辽宁省自然科学基金(2013020064) |
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| 摘 要： | 运用半方差分析、单因素方差分析和Duncan多重比较方法,对科尔沁沙地丘间低地-流动沙丘联合体土壤含水量的时空变化进行了分析。结果表明:土壤含水量的季节动态与降水量的变化趋势保持一致,6月份降水量和土壤含水量最高。土壤含水量由高到低的趋势为:过渡带、丘间低地、流动沙丘。流动沙丘和过渡带的土壤含水量随着土壤深度的增加而增加,丘间低地的土壤含水量随着土壤深度的增加而降低。流动沙丘的土壤含水量在较小尺度上具有90%的空间自相关性,过渡带的土壤含水量在较大尺度上具有强烈的空间自相关性。丘间低地表层的土壤含水量在较大尺度上具有中等的空间自相关性。
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| 关 键 词： | 沙地丘间低地-流动沙丘联合体 土壤含水量 空间自相关性 |
Spatial Heterogeneity of Sio l Water Content in the Interdune Lowland-Active Sand Dune Systems in Horqin Sand-y Land |
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| Miao Chunping
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Li Xuehua
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Jiang Deming
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Jia Meiyu
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Han Xu.Spatial Heterogeneity of Sio l Water Content in the Interdune Lowland-Active Sand Dune Systems in Horqin Sand-y Land[J].Journal of Northeast Forestry University,2015(3):90-94. |
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| Authors: | Miao Chunping Li Xuehua Jiang Deming Jia Meiyu Han Xu |
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| Institution: | Miao Chunping;Li Xuehua;Jiang Deming;Jia Meiyu;Han Xu;Institute of Applied Ecology,Chinese Academy of Science; |
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| Abstract: | We studied the spatial and temporal variation of soil water content by semi-variance analysis , one-way ANOVA and Duncan multiple comparisons .The seasonal dynamic of soil water content was consistent with the rainfall , and both of them were highest on June .The soil water content decreased from the ecotones to the interdune lowlands , to the active sand dunes .Both the soil water content on the active sand dunes and ecotones were increased with the increasing of soil depth , whereas , it was decreased with the increasing of soil depth on the interdune lowlands .The spatial autocorrelation of soil wa-ter content on the active sand dune was 90%at fine scale , however , the autocorrelation on the ectone was strong at coarser scale.The spatial autocorrelation on the upper soil layer of interdune lowlands was moderate at the coarser scale. |
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| Keywords: | Interdune lowland-active sand dune systems Soil water content Spatial autocorrelation |
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