| 松嫩平原西部土壤盐碱化空间变异与微地形关系研究 |
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| 引用本文： | 杨帆,章光新,尹雄锐,李秀军.松嫩平原西部土壤盐碱化空间变异与微地形关系研究[J].地理科学,2009(6). |
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| 作者姓名： | 杨帆 章光新 尹雄锐 李秀军 |
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| 作者单位： | 中国科学院东北地理与农业生态研究所;中国科学院研究生院; |
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| 基金项目： | 中国科学院知识创新工程重大项目(KZCX2-YW-Q06-2)(KZCX1-YW-126); 国家十一五攻关项目(2006BAC01A08); 东北地理与农业生态研究所领域前沿项目(KZCX3-SW-NA3-29)联合资助 |
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| 摘 要： | 以松嫩平原西部具有典型微地形变化的苏打盐渍土小区为试验区,运用经典统计学和地统计学相结合的方法研究了小区盐碱化指标土壤电导率(EC)、盐分含量(SC)、pH和SAR的空间变异特征,绘制了4种指标的空间分布图。结果表明:受结构性因素和随机性因素的共同作用,4种指标均具有强空间相关性。4种指标空间分布在一定范围内均存在空间上的相似性。四种指标与相对高程呈极显著相关,相对高程在40 cm范围内,四种指标随着相对高程的增加,呈二次函数曲线增加趋势。该研究为苏打盐渍土区植被恢复和盐碱地利用提供依据。
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| 关 键 词： | 苏打盐渍土 地统计 空间变异 微地形 |
Spatial Variability of Soil Salinity and Alkalization and Its Correlation with Mic-topography in the West of Songnen Plain |
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| YANG Fan,ZHANG Guang-xin,YIN Xiong-rui,LI Xiu-jun.Spatial Variability of Soil Salinity and Alkalization and Its Correlation with Mic-topography in the West of Songnen Plain[J].Scientia Geographica Sinica,2009(6). |
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| Authors: | YANG Fan ZHANG Guang-xin YIN Xiong-rui LI Xiu-jun |
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| Institution: | YANG Fan1,2,ZHANG Guang-xin1,YIN Xiong-rui1,LI Xiu-jun1 (1.Northeast Institute of Geography , Agroecology,Chinese Academy of Sciences,Changchun,Jilin 130012,2.Graduate University of the Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | Soil salinity content(SC),electrical conductivity(EC),pH,SAR were studied and analyzed by using statistics and geo-statistics in saline-sodic soil land in the West of Songnen Plain.The result indicated SC,EC,SAR,pH were strongly spatial autocorrelation resulting from compound impact of structural factors.The spatial distribution maps of interpolated by Kriging interpolation showed apparently that the spatial distribution of SC,EC,SAR and pH were similar.Through Peason correlation,the result showed four inde... |
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| Keywords: | saline-alkali land geostatistic spatial variability mic-topography |
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