ISWC OpenIR  > 水保所知识产出(1956-2013)
不同退耕年限林草地土壤颗粒分形特征研究
华瑞1; 徐学选1,2; 张少妮1; 赵传普2
2016
Source Publication水土保持学报
Volume30Issue:4Pages:206-209
Abstract

选用不同退耕年限林地、草地各3块,对0—60cm土壤进行土壤机械组成及分形维数研究,分析土壤
颗粒特征与土壤基本性质之间的相关关系。结果表明:随着退耕年限的增加,土壤粘粒含量与颗粒分形维数
有增长趋势,林地较草地变化显著;林、草地中土壤颗粒分形维数随土层加深均降低,林地较草地降低明显;
随着年限的增加,土壤基本性质得到改善,饱和含水率、总孔隙度、水稳性团聚体及有机质尤为显著;土壤颗
粒分形维数与水稳性团聚体、饱和含水率、总孔隙度、有机质和粘粒含量均存在显著正相关关系。退耕还林
还草可改善土壤基本性质,土壤质地有向粘性发展的趋势,土壤分形维数提高,其中以林地最为显著。

Other Abstract

Forestlands and grasslands with different restoration years were chosen as the research subjects,
each having 3sites.The aim of this research was to study soil mechanical composition and particle fractal
dimension at the soil layer of 0-60cm,and to analyze the correlation between soil particle characteristics
and soil basic properties.The results showed that:with the increase of restoration years,soil clay content
and particle fractal dimension tended to be increasing,and compared with grassland,forestland had more
significant changes;with the increase of soil depth,soil particle fractal dimension gradually decreased,and
the decrease was more significant in forestland than in grassland;with the increase of restoration years,soil
basic properties were improved,especially for saturated water content,total porosity and organic matter
content;soil particle fractal dimension had significant positive correlation with water-stable aggregate
content,saturated water content,total porosity,soil organic matter and clay content.In conclusion,grain
for green project can improve soil properties,soil having the trend to contain more clay,and soil particle
fractal dimension being increased,especially in forestland.

Keyword退耕年限 林草地 土壤颗粒分形维数 相关关系
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8538
Collection水保所知识产出(1956-2013)
Affiliation1.西北农林科技大学水土保持研究所
2.中国科学院水土保持研究所
Recommended Citation
GB/T 7714
华瑞,徐学选,张少妮,等. 不同退耕年限林草地土壤颗粒分形特征研究[J]. 水土保持学报,2016,30(4):206-209.
APA 华瑞,徐学选,张少妮,&赵传普.(2016).不同退耕年限林草地土壤颗粒分形特征研究.水土保持学报,30(4),206-209.
MLA 华瑞,et al."不同退耕年限林草地土壤颗粒分形特征研究".水土保持学报 30.4(2016):206-209.
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