干热河谷冲沟不同部位土壤水分物理性质研究

本研究通过对元谋干热河谷典型冲沟集水区、沟头和沟床的考察采样及室内实验分析,研究了冲沟不同部位的土壤水分物理性质。结果表明：①冲沟不同部位土壤容重差异显著,其大小表现为：集水区〉沟床〉沟头,分别为1.71,1.58,1.45 g/cm^3,且集水区、沟头和沟床土壤容重均随土层深度的增加而增大;②各部位土壤总孔隙度和毛管孔隙度均表现为：沟头〉沟床〉集水区,且其均随土层深度的增加而呈现逐渐降低的趋势;③土壤田间持水量和毛管持水量在试验土层中均表现为：沟头〉沟床〉集水区,土壤饱和蓄水量则是：集水区〉沟床〉沟头;冲沟不同部位的土壤田间持水量、毛管持水量、饱和蓄水量和毛管蓄水量随土层深度的变化趋势相似,...

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Bibliographic Details
Published in西南农业学报 Vol. 29; no. 3; pp. 635 - 640
Main Author 郭敏 熊东红 张宝军 张素 杨丹 徐丽 陈廷明
Format Journal Article
LanguageChinese
Published 中国科学院大学,北京100049%中国科学院山地灾害与地表过程重点实验室,四川成都610041 2016
中国科学院山地灾害与地表过程重点实验室,四川成都610041
中国科学院水利部成都山地灾害与环境研究所,四川成都610041%凉山水土保持生态环境监测分站,四川西昌,615000%雷波县水土保持办公室,四川雷波,616550
中国科学院水利部成都山地灾害与环境研究所,四川成都610041
Subjects
不同部位
冲沟
土壤水分物理性质
干热河谷
Dry-hot valley
Gully
冲沟
土壤水分物理性质
干热河谷
Soil water-physical properties
不同部位
Different positions
Online AccessGet full text
ISSN1001-4829
DOI10.16213/j.cnki.scjas.2016.03.032

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Summary:本研究通过对元谋干热河谷典型冲沟集水区、沟头和沟床的考察采样及室内实验分析,研究了冲沟不同部位的土壤水分物理性质。结果表明：①冲沟不同部位土壤容重差异显著,其大小表现为：集水区〉沟床〉沟头,分别为1.71,1.58,1.45 g/cm^3,且集水区、沟头和沟床土壤容重均随土层深度的增加而增大;②各部位土壤总孔隙度和毛管孔隙度均表现为：沟头〉沟床〉集水区,且其均随土层深度的增加而呈现逐渐降低的趋势;③土壤田间持水量和毛管持水量在试验土层中均表现为：沟头〉沟床〉集水区,土壤饱和蓄水量则是：集水区〉沟床〉沟头;冲沟不同部位的土壤田间持水量、毛管持水量、饱和蓄水量和毛管蓄水量随土层深度的变化趋势相似,均是随土层深度的增加而降低。
Bibliography:Soil water-physical properties; Gully; Different positions; Dry-hot valley
GUO Min , XIONG Dong-hong , ZHANG Bao-jun, ZHANG Su ,YANG Dan , XU Li, CHEN Ting-min （ 1. Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Sichuan Chengdu 610041, China; 2. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences,Sichuan Chengdu 610041, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China ;4. Soil and Water Conservation Ecological Environment Monitoring Substation of Liangshan, Siehuan Xichang 615000, China; 5. Soll and Water Conservation Office in Leibo, Siehuan Leibo 616500, China）
51-1213/S
Based on the soil sample collections and laboratory tests of a whole gully, e.g. drainage area, gully head and gully bed, the soil water-physical properties of different positions were studied in this paper. The results showed that： （i）The soil hulk density of different gully positions showed significant difference, following the order： drainage area
ISSN:1001-4829
DOI:10.16213/j.cnki.scjas.2016.03.032