干旱区生态环境知识资源中心(Arid): 祁连山区主要下垫面土壤粒径分布特征

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	祁连山区主要下垫面土壤粒径分布特征
其他题名	Characteristics of Soil Particle Size Distribution of Main Land Surfaces in Qilian Mountains
	贺燕; 魏霞; 魏宁; 于文竹; 崔霞; 赵恒策
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2020
卷号	27 期号:2 页码:42-
中文摘要	为揭示祁连山区土壤结构异质性和粒径分布(PSD)的非均匀性,阐明主要下垫面土壤性质差异及土地退化趋势。以祁连山区荒漠、草原、草甸和灌丛等下垫面土壤为研究对象,运用分形理论和相关分析研究了土壤颗粒的粗糙度和非均匀性,分析了下垫面、土壤质地对分形参数的影响。结果表明:土壤单重分形维数(DV)分布范围为2.089~ 2.500,下垫面对DV、多重分形参数(容量维数D0,信息维数D1,关联维数D2,D1/D0)影响显著,荒漠土壤粗糙度显著(p<0.01)高于草原、草甸、灌丛,其PSD测度的集中度、非均匀性显著(p<0.05)高于草原、草甸,说明祁连山区整体土壤质地较粗,自东向西逐渐粗化且非均匀性增大。黏粒、粉粒体积分数与DV极显著正相关,与多重分形参数显著正相关(D0除外),且DV和多重分形参数分别受黏粒、细砂粒体积分数的主导作用。该研究通过对土壤颗粒微观结构详细分析,可为祁连山区不同下垫面土壤改良及实际生产提供理论基础,为生态环境治理提供科学依据。
英文摘要	In order to clarify the heterogeneity of soil particle size distribution(PSD)and reveal the soil property difference and land degradation trend of land surface in Qilian Mountains,four types of land use(desert, alpine steppe,alpine meadow,and shrub)in Qilian Mountains were selected as the research samples.The contents of soil particle sizes were measured using a laser particle analyzer,soil fractal model and correlation analysis were applied to study the coarseness and the heterogeneity of soil particle composition,and the effects of land-use and soil texture on fractal parameters were analyzed.The results show that the single fractal dimensions(DV)of the four land surfaces range from 2.089to 2.500,the land surface has significant influence on the DVand multi-fractal parameters(capacity dimension D0,information dimension D1,correlation dimension D2,and D1/D0),that is,the ANOVA indicates that the coarseness of soil particles in desert is significantly higher(p<0.01)than those of alpine steppe,alpine meadow,and shrub,the local concentration rate and inhomogeneity of the soil PSD measurement of desert are significantly higher(p<0.05)than those of alpine steppe,and alpine meadow,indicating that the overall soil texture is coarse and presents a tendency of coarsening,and heterogeneity of soil texture increases from east to west in Qilian Mountains;the contents soil clay and silt are significantly positively correlated with DV,and positively correlated with multifractal parameters,DVand multi-fractal parameters are mainly affected by the content of clay and content of fine sand,respectively.This study analyzed the microstructure of soil particles in detail,which can provide the theoretical basis for soil improvement and actual production of different land surfaces in Qilian Mountains,and scientific basis for ecological environment management.
中文关键词	粒径分布 ; 单重分形 ; 多重分形 ; 土壤 ; 祁连山
英文关键词	soil particle size distribution single fractal model multi-fractal model soil Qilian Mountains
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6713038
来源机构	兰州大学 ; 西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336435
作者单位	贺燕, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 魏霞, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 于文竹, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 崔霞, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 赵恒策, 兰州大学资源环境学院, 兰州, 甘肃 730000, 中国.; 魏宁, 西北农林科技大学理学院, 杨凌, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	贺燕,魏霞,魏宁,等. 祁连山区主要下垫面土壤粒径分布特征[J]. 兰州大学, 西北农林科技大学,2020,27(2):42-.
APA	贺燕,魏霞,魏宁,于文竹,崔霞,&赵恒策.(2020).祁连山区主要下垫面土壤粒径分布特征.水土保持研究,27(2),42-.
MLA	贺燕,et al."祁连山区主要下垫面土壤粒径分布特征".水土保持研究 27.2(2020):42-.