干旱区生态环境知识资源中心(Arid): 石灰岩区土壤分形特征及其与土壤性质的关系

Arid

	石灰岩区土壤分形特征及其与土壤性质的关系
其他题名	Characteristics of Fractal Dimension of Limestone Soil and Its Correlation with Soil Properties
	张治伟 1; 傅瓦利 1; 朱章雄 1; 张洪 2; 文志林 1; 李芹 1
ISSN	0253-9829
出版年	2009
卷号	41 期号:1 页码:90-96
中文摘要	研究了岩溶坡地不同生态系统土壤颗粒组成和团粒结构的分形特征.结果表明,土壤颗粒组成分形维数与黏粒及物理性黏粒含量显著正相关,与砂砾含量显著负相关.团粒结构分形维数与水稳性团聚体含量显著负相关,与团聚体湿筛后的破坏率显著正相关,即分形维数愈高,>0.25 mm水稳性团聚体和水稳性大团聚体含量愈低;团粒结构的分形维数与土壤有机质有负相关趋势,与土壤阳离子交换量显著负相关,与土壤体积质量(容重)呈正相关趋势.次生灌丛岩溶生态系统退化后,土壤黏粒减少,体积质量上升,土壤水稳性团聚体含量及其稳定性下降,土壤颗粒组成分形维数降低,土壤团粒结构分形维数则呈上升趋势.颗粒组成分形维数与团粒结构分形维数对土壤质量和岩溶生态环境状况的反映是一致的.
英文摘要	This paper studied the distribution and feature of soil particles and water-stable aggregates, and the distribution of fractal dimension of particles and water-stable aggregates under different karst ecosystems. Results showed that the fractal dimension of particles appeared high significant positive correlation with the contents of clay and physical clay, but high significant negative correlation with sand content. The fractal dimension of water-stable aggregates exhibited significant negative correlation with contents of >0.25mm water-stable aggregates, soil organic matter and cation exchange capacity, but high significant positive correlation with the percentage of structural damage, soil bulk density and percentage of bare rock in karst ecosystem. Soil bulk density increased after the breakage or farming of secondary forestland, at the same time, contents of clay, soil organic matter and soil water-stable aggregates all exhibited decreasing trends. There existed significant quantitative correlation between soil fractal dimension and soil properties. Fractal dimensions of particles and aggregates exhibited identical function in disclosing soil properties, soil quality and soil degradation degree. So fractal dimension can be used as an effective method in evaluating soil quality and the degree of karst rock desertification.
中文关键词	岩溶区 ; 土壤结构 ; 分形维数 ; 土壤性质
英文关键词	Karst area Soil structure Fractal dimension Soil property
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:3563991
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224263
作者单位	1.西南大学地理科学学院, 重庆 400715, 中国; 2.重庆南开中学, 重庆 400700, 中国
推荐引用方式 GB/T 7714	张治伟,傅瓦利,朱章雄,等. 石灰岩区土壤分形特征及其与土壤性质的关系[J],2009,41(1):90-96.
APA	张治伟,傅瓦利,朱章雄,张洪,文志林,&李芹.(2009).石灰岩区土壤分形特征及其与土壤性质的关系.,41(1),90-96.
MLA	张治伟,et al."石灰岩区土壤分形特征及其与土壤性质的关系".41.1(2009):90-96.