干旱区生态环境知识资源中心(Arid): 黔中喀斯特坡地浅层裂隙土壤机械组成对降雨的响应

Arid

	黔中喀斯特坡地浅层裂隙土壤机械组成对降雨的响应
其他题名	Response of mechanical composition of fractured soil to rainfall in shallow Karst slopes in central Guizhou,China
	杨宇琼; 戴全厚; 严友进; 彭旭东
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2019
卷号	30 期号:2 页码:545-552
中文摘要	运用野外取样调查结合室内吸管法,分析黔中喀斯特坡地不同土地利用类型浅层裂隙土壤机械组成随降雨的变化特征,以期为该区地下土壤漏失研究提供理论依据和技术支撑.结果表明:黔中喀斯特坡地浅层裂隙土壤粒径含量总体以粉粒为主,约占57%.在不同降雨量的作用下,坡耕地裂隙土壤颗粒含量变化整体表现为细砂粒含量的减少和粉粒、黏粒含量的增大.草地裂隙土壤颗粒的变化主要是细砂粒含量的减少和黏粒含量的增加.乔木林地和灌木林地裂隙土壤颗粒的变化不规律.降雨量与土壤砂粒含量变化之间存在正相关关系.随着土层深度的增加,各土地利用类型的裂隙对粉粒和极粗砂粒含量的变化有一定影响,其中,粉粒含量随土层深度的增加而减少.
英文摘要	Field sampling and indoor pipette method was used to analyze the variation of soil mechanical composition of shallow Karst fissures in response to rainfall under different land uses in Karst rocky desertification region in central Guizhou. Results would supply important scientific basis and direction for further research of soil leakage in the Karst areas. The results showed that silt was the dominant component in soil mechanical composition of shallow Karst fissures,with a content of 57%. In response to rainfall,the contents of silt and clay were increased and that of fine sand was reduced in slope cropland,while the content of fine sand was reduced and that of silt was increased in grassland. The changes of mechanical composition of shallow Karst fissures in forest and shrub land were irregular. Moreover,there was a positive correlation between rainfall and the sand content of shallow Karst fissures. The fissures of land use types had effects on the changes of silt and extremely coarse sand contents with the increase of soil depth,with a decreasing trend of silt.
中文关键词	喀斯特坡地 ; 浅层裂隙 ; 土壤机械组成 ; 降雨 ; 地下土壤漏失
英文关键词	Karst slope shallow fissure soil mechanical composition rainfall leakage of underground soil
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6426878
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239664
作者单位	贵州大学林学院, 贵阳, 贵州 550025, 中国
推荐引用方式 GB/T 7714	杨宇琼,戴全厚,严友进,等. 黔中喀斯特坡地浅层裂隙土壤机械组成对降雨的响应[J],2019,30(2):545-552.
APA	杨宇琼,戴全厚,严友进,&彭旭东.(2019).黔中喀斯特坡地浅层裂隙土壤机械组成对降雨的响应.应用生态学报,30(2),545-552.
MLA	杨宇琼,et al."黔中喀斯特坡地浅层裂隙土壤机械组成对降雨的响应".应用生态学报 30.2(2019):545-552.