| 三峡库区消落带初期土壤养分特征 |
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| 引用本文： | 王晓荣,程瑞梅,肖文发,郭泉水,封晓辉.三峡库区消落带初期土壤养分特征[J].生态学杂志,2010,29(2):281. |
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| 作者姓名： | 王晓荣 程瑞梅 肖文发 郭泉水 封晓辉 |
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| 作者单位： | 国家林业局森林生态环境重点实验室,中国林业科学研究院森林生态环境与保护研究所,北京,100091 |
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| 基金项目： | 中国林业科学研究院公益基金项目(CAFYBB2007023,CAFYBB200717); 国家林业科技支撑计划资助项目(2006BAD03A1302/03,2006BAD03A07) |
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| 摘 要： | 对三峡库区消落带回水区内2种主要植被类型土壤养分特征进行了研究。结果表明,除有效磷外,次生灌丛土壤养分含量均高于弃耕地,且其他养分指标变异系数在50%左右,而有效磷的变异系数达到91%。随海拔的升高,土壤养分未表现出明显差异性。与对照样带相比较,消落带内全磷、全钾、有效磷、速效钾含量增加,表明水淹和清库等人为活动对土壤母质风化影响严重,导致消落带内土壤磷和钾含量增高,而速效钾在水淹后则大量流失;随着土壤层次的加深,除了有效磷外,其他养分都表现出逐渐降低的趋势。消落带处于幼年时期,尚未形成明显的水分梯度,其养分和水分没有显著的相关性。
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| 关 键 词： | 三峡库区 消落带 土壤养分 |
Soil nutrient characteristics in juvenile water-level-fluctuating zone of Three Gorges Reservoir |
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| WANG Xiao-rang,CHENG Rui-mei,XIAO Wen-fa,GUO Quan-shui,FENG Xiao-hui.Soil nutrient characteristics in juvenile water-level-fluctuating zone of Three Gorges Reservoir[J].Chinese Journal of Ecology,2010,29(2):281. |
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| Authors: | WANG Xiao-rang CHENG Rui-mei XIAO Wen-fa GUO Quan-shui FENG Xiao-hui |
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| Affiliation: | WANG Xiao-rong,CHENG Rui-mei,XIAO Wen-fa,GUO Quan-shui,FENG Xiao-hui (Key Laboratory of Forest Ecology , Environment,State Forestry Administration of China,Research Institute of Forest Ecology,Environment , Protection,Chinese Academy of Forestry,Beijing 100091,China). |
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| Abstract: | Taking the soils of secondary shrubs and abandoned farmland in the juvenile water-level-fluctuating zone in Three Gorges Reservoir as test objects,this paper studied the characteristics of their nutrients. The nutrient contents except that of available phosphorous were higher in shrub soil than in abandoned farmland soil. The coefficient of variation of soil available phosphorus was 91%,while those of other nutrients were about 50%. No significant difference was observed in the nutrient contents with altitu... |
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| Keywords: | Three Gorges Reservoir water-level-fluctuating zone soil nutrient |
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