| 三峡库区不同土地利用类型土壤颗粒分形特征 |
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| 引用本文： | 巨莉,文安邦,郭进,严冬春,史忠林.三峡库区不同土地利用类型土壤颗粒分形特征[J].水土保持学报,2011,25(5):234-237. |
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| 作者姓名： | 巨莉 文安邦 郭进 严冬春 史忠林 |
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| 作者单位： | 1. 中国科学院水利部成都山地灾害与环境研究所,成都610041／中国科学院研究生院,北京100049
2. 中国科学院水利部成都山地灾害与环境研究所,成都,610041 |
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| 基金项目： | 国家科技支撑计划项目(2011BAD31B03); 国家科技重大专项课题(2009ZX07104-002-06) |
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| 摘 要： | 采集三峡库区忠县石宝寨4种不同土地利用类型土壤剖面0-40cm土层3个层次12个土壤样品,通过计算和测定土样颗粒体积分形维数及基本性质,以期说明三峡库区中性紫色土土壤颗粒体积分形特征及其与土壤基本性质间的相关性。结果表明,研究区中性紫色土土壤剖面（0-40cm）土壤颗粒体积分形维数D值介于2.638～2.674之间。随土层深度的增加D值总体呈增加趋势,不同土地利用类型之间的D值存在差异,表现为林地〈果园〈菜地〈水田;D值与土壤粘粒（〈0.002mm）体积百分含量呈极显著正相关关系（P〈0.01）,与土壤粉粒（0.002～0.05mm）体积百分含量的相关性不强,而与砂粒（〉0.05mm）体积百分含量呈极显著负相关关系（P〈0.01）;D值与土壤有机质、全氮、全磷含量不存在显著相关性。
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| 关 键 词： | 紫色土 三峡库区 体积分形维数 土壤颗粒 |
Fractal Characteristics of Soil Particles Under Different Land Use Types in the Three Gorges Reservoir Region |
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| JU Li,WEN An-bang,GUO Jin,YAN Dong-chun,SHI Zhong-lin.Fractal Characteristics of Soil Particles Under Different Land Use Types in the Three Gorges Reservoir Region[J].Journal of Soil and Water Conservation,2011,25(5):234-237. |
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| Authors: | JU Li WEN An-bang GUO Jin YAN Dong-chun SHI Zhong-lin |
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| Institution: | JU Li1,2,WEN An-bang1,GUO Jin1,YAN Dong-chun1,SHI Zhong-lin1,2(1.Institute of Mountain Hazards and Environment,CAS,Chengdu 610041,2.Graduate University,Beijing 100049) |
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| Abstract: | For searching the characteristics of volume fractal dimension of purple soil particle in the Three Gorges reservoir region and the relationship between volume fractal dimension and the main features of purple soil,twelve soil samples from the four kinds of land use and three soil profiles within 0-40 cm depth were presented and tested,and the soil particle size distributions were measured by Mastersizer 2000.Some conclusions could be drawn as follows:The volume fractal dimensions of neutral purple soil(0-40... |
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| Keywords: | purple soil Three Gorges reservoir region volume fractal dimension soil particle |
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