干旱区生态环境知识资源中心(Arid): 青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义

Arid

	青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义
其他题名	Difference of Soil Particle Size Between Unchanged Perennial Farmland and Permanent Grassland and Its Implications During Nearly 30Years on the North of Qinghai Lake
	袁杰 1; 曹广超 1; 虞敏 1; 袁有靖 2; 杨龙 1; 赵亚娟 1
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2016
卷号	23 期号:5 页码:199-204
中文摘要	在前期对青海湖流域1987年、1995年、2000年、2005年、2010年5期遥感图像解译基础上,对受人类活动影响严重和沙漠化趋势加剧的环青海湖北部区域近30年不变草地和不变耕地土壤粒度进行了分析。结果表明:研究区不变草地和不变耕地粒度组成上都属于砂黏壤级,但各组分之间存在明显差异,其中不变草地粉砂和黏粒大于不变耕地,而砂含量小于不变耕地;不变草地和不变耕地粒度参数特征表明不变草地平均粒径较小,分选更好,粒度曲线更为近对称分布,峰度中等,而不变耕地则平均粒径偏大,分选较差,粒度曲线偏正偏;不变草地和不变耕地剖面上表现为土壤粒度以地层深度3035cm为界存在异同,其中不变草地和不变耕地在30cm以上地层范围内土壤粒度差异非常显著,30cm以下范围内土壤粒度差异很小。
英文摘要	Based on the interpretation of the remote sensing images of 1987,1995,2000,2005 and 2010 years in Qinghai Lake basin,we investigated the difference of soil particle size between unchanged perennial farmland and permanent grassland during nearly 30 years on the north of Qinghai Lake,which has been severely affected by human activities and the desertification has been intensified.The results showed that composition of soil particle size in the unchanged grassland and farmland belonged was dominated by sand clay,but the compositions of soil sand,silt and clay sizes were significantly different,the contents of soil silt and clay on the grassland were greater than those in the farmland;the content of soil sand on the grassland was less than that in the farmland,indicating that the soil average particle size on the grassland was smaller;degree of sorting was better;soil particle size followed the normal distribution as well as peak value was moderate.For the farmland,soil average particle size and degree of sorting were converse,soil particle size more deviated positive values.In the soil profile,the difference of soil particle size between the unchanged grassland and farmland existed in the 3035 cm depth,the difference was significant above 30cm depth,but it was weak below 30cm depth.
中文关键词	青海湖北部 ; 人为活动 ; 土壤粒度
英文关键词	north of Qinghai Lake human activities soil particle size
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:5759819
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235032
作者单位	1.青海师范大学, 青海省自然地理与环境过程重点实验室, 西宁, 青海 810008, 中国; 2.青海省环境地质勘查局, 西宁, 青海 810008, 中国
推荐引用方式 GB/T 7714	袁杰,曹广超,虞敏,等. 青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义[J],2016,23(5):199-204.
APA	袁杰,曹广超,虞敏,袁有靖,杨龙,&赵亚娟.(2016).青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义.水土保持研究,23(5),199-204.
MLA	袁杰,et al."青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义".水土保持研究 23.5(2016):199-204.