| 三峡库区消落区蓄水前土壤养分分布特征 |
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| 引用本文： | 叶琛,程晓莉,张全发.三峡库区消落区蓄水前土壤养分分布特征[J].土壤通报,2011(6):1404-1410. |
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| 作者姓名： | 叶琛 程晓莉 张全发 |
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| 作者单位： | 中国科学院武汉植物园;中国科学院水生植物与流域生态重点实验;中国科学院研究生院; |
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| 基金项目： | 国务院三峡建设委员会办公室(SX2008-005)资助 |
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| 摘 要： | 为研究175 m蓄水前三峡库区消落区土壤养分分布特征,选择12个采样区,采用野外调查和室内分析相结合的方法,研究结果表明土壤呈中性偏碱性p,H值为6.93～7.91;全磷、全钾、有效钾和铵态氮的含量分布比较集中,差异较小;有效磷、有机质、全氮和硝态氮比较分散,差异较大;土壤类型和土壤粒级对土壤养分含量会产生重要影响。主成分分析和聚类分析将研究区大致分为4类:土壤综合养分较高型、土壤贫瘠型、有效磷含量较高型和全磷、全钾含量较高型,并针对不同类型的土壤分别提出改善措施。本研究为三峡库区消落区的生态环境保护和土地资源的合理规划提供一定的指导意义。
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| 关 键 词： | 三峡水库 消落区 土壤养分 主成分分析 |
Characteristics of Soil Nutrient Distribution in the Water-Level-Fluctuation Zone in the Three Gorges Reservoir,China |
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| YE Chen ,,CHENG Xiao-li ,ZHANG Quan-fa.Characteristics of Soil Nutrient Distribution in the Water-Level-Fluctuation Zone in the Three Gorges Reservoir,China[J].Chinese Journal of Soil Science,2011(6):1404-1410. |
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| Authors: | YE Chen CHENG Xiao-li ZHANG Quan-fa |
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| Institution: | YE Chen 1,2,3,CHENG Xiao-li 1,ZHANG Quan-fa 1,2(1.Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China,2.Key Laboratory of Aquatic Botany and Watershed Ecology,3.Graduate School of the Chinese Academy of Sciences,Beijing 100049,China.) |
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| Abstract: | The rational use of land resources of the water-level-fluctuation zone in the Three Gorges Reservoir principally depends on the soil nutrient quality.In this study,principal component analysis and cluster analysis were performed to analyze soil nutrients of 68 soil samples collected in 12 sites in the water-level-fluctuation zone of the Three Gorges Reservoir.The results indicated that 1) the pH values of soils ranged from 6.93 to 7.91;Total P,K,available K and ammonium nitrogen(N) showed little variation i... |
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| Keywords: | Three Gorges Reservoir Water-Level-Fluctuation Zone Soil nutrient Principal component analysis |
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