干旱区生态环境知识资源中心(Arid): 宁夏白芨滩防沙治沙区风沙土粒度组成特征及空间异质性

Arid

	宁夏白芨滩防沙治沙区风沙土粒度组成特征及空间异质性
其他题名	Grain composition and spatial heterogeneity of aeolian sandy soil in desertification combating areas of Baijitan in Ningxia
	展秀丽 1; 吴伟 2
来源期刊	甘肃农业大学学报
ISSN	1003-4315
出版年	2017
卷号	52 期号:3 页码:84-89
中文摘要	【目的】为宁夏河东沙区防沙治沙提供科学依据和基础数据.【方法】本研究选取了白芨滩防沙治沙区,对其风沙土粒度组成特征开展研究,通过野外网格法采样(0~30cm),室内应用马尔文激光粒度仪测定土壤粒度组成,计算得出平均粒径(Mz)、标准偏差(sigma)、偏度(Sk)、峰度(KG)等土壤粒度特征参数.【结果】研究区土壤粒度组成以细沙为主,约占土壤颗粒体积分数的64.42%~78.72%,中沙含量次之,为9.99%~31.96%.极细沙含量较少,为1.79%~16.1%,粗沙和粉沙含量非常少.空间异质性研究表明,Mz、sigma和KG的块金系数均<25%,均表现出强烈的空间自相关性,Sk不存在空间自相关.平均粒径的空间分布表现为从西南向东北颗粒逐渐变粗的趋势,标准偏差空间分布表现为由南向北逐渐减小,峰度表现为从南向北逐渐减小.【结论】本区域在草方格+植物措施的治理下,风沙土的颗粒的分选性较好,分配程度均匀性良好.
英文摘要	【Objective】To discuss grain composition of aeolian sandy soil in desertification combating areas of Baijitan and provide some basis for desertification combating of sandy lands in east of Yellow River in Ningxia.【Method】Sampling by grid method,using Malvern laser particle size analyzer to measure grain composition of the topsoil,calculate the mean grain size(MZ),standard deviation(sigma),skewness(Sk)and kurtosis(KG).【Result】The dominant grain composition of topsoil was mainly fine sands,accounting for 64.42%~78.72% of volume fraction of soil particles,the second was middle-sized sand,ranging from 9.99% to 31.96%,the very fine sand was less,ranging from 1.79% to 16.1%,the coarse sand and powder sand were very few.The Nugget coefficient of Mz,sigma and KGwere all less than 25%,showing strong spatial autocorrelation,while Skappeared no spatial autocorrelation.The spatial distribution of MZtook the trend of coarsening from southwest to northeast and the standard deviation and KGdecreased from the south to the north.【Conclusion】Under the combating measures of straw checkerboard combined vegetation in the sandy area,grain sorting of the aeolian sandy soil was better,the distribution evenness was better.
中文关键词	粒度组成 ; 空间异质性 ; 防沙治沙 ; 宁夏白芨滩
英文关键词	grain composition spatial heterogeneity desertification combating Baijitan in Ningxia
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:6027232
来源机构	宁夏大学 ; 北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235871
作者单位	1.宁夏大学资源环境学院, 银川, 宁夏 750021, 中国; 2.北京师范大学, 地表过程与资源生态国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	展秀丽,吴伟. 宁夏白芨滩防沙治沙区风沙土粒度组成特征及空间异质性[J]. 宁夏大学, 北京师范大学,2017,52(3):84-89.
APA	展秀丽,&吴伟.(2017).宁夏白芨滩防沙治沙区风沙土粒度组成特征及空间异质性.甘肃农业大学学报,52(3),84-89.
MLA	展秀丽,et al."宁夏白芨滩防沙治沙区风沙土粒度组成特征及空间异质性".甘肃农业大学学报 52.3(2017):84-89.