干旱区生态环境知识资源中心(Arid): 风蚀作用下农田土壤细颗粒的粒度损失特征及其对土壤性质影响

Arid

	风蚀作用下农田土壤细颗粒的粒度损失特征及其对土壤性质影响
其他题名	Loss Characteristics of Fine Particles by Wind in Farmland and Its Effect on Soil Properties
	苑依笑 1; 王仁德 2; 常春平 1; 郭中领 1; 李庆 2
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2018
卷号	32 期号:2 页码:104-109,119
中文摘要	以河北坝上地区作为典型研究区,采用野外观测和室内试验分析方法,通过比较农田与邻近天然草地土壤性质之间的差异,研究了农田土壤细颗粒物的损失特征及其对土壤理化性质的影响。结果表明:与风蚀较轻的天然草地相比,农田土壤中黏粒含量下降30%,粉砂含量下降14%;土壤细粒物质的损失粒径集中在0~40mum,其中1.8~24.0mum的细颗粒损失最为严重。由于土壤细颗粒物的损失,土壤砂粒含量相对增加7%,砾石含量相对增加75%,土壤平均粒径增大16%,农田土壤出现明显的粗化、沙化趋势。同时,农田土壤随着养分含量较高的细颗粒损失而变得贫瘠,表现为有机质含量减少29%,全氮含量减少24%,土壤C/N比明显下降,土壤肥力显著降低。土壤细颗粒物的损失对土壤的可风蚀性颗粒含量无明显影响,土壤风蚀可蚀性的变化趋势不明显。
英文摘要	The wind erosion of farmland in the agro-pastoral acetone of northern China is very serious,which causes degradation of soil resources.Taking Bashang district as a typical area of agro-pastoral acetone,by field sampling and comparing the differences in soil properties between farmland and nearby natural grassland, the loss characteristics of fine particles in farmland soils led by wind erosion as well as its impact on soil physical and chemical properties were studied in the paper.The results showed that,compared with natural grasslands with weak wind erosion,the contents of clay and silt in farmlands decreased by 30%and 14%, respectively.The grain sizes of lost soil concentrated in 0~40mum,of which the loss of fine particles with sizes of 1.8~24.0mum was the largest.The loss of fine particles in farmland soils resulted in the increase of sand and gravel in farmland soils by 7% and 75%,respectively,also the averaged particle size of soil increased 16%.Those indicate that the farmland soils have serious tendency of coarsening and desertification under the long-time effect of wind erosion.With the loss of fertile fine particles,the soils of farmland became barren.The results showed that the contents of carbon(C)and total nitrogen(N)in farmland soils decreased significantly,with a declining range of about 29%and 24%,respectively.The ratio of C to N(C/N)also declined obviously and the content of soil fertility reduced.However,the loss of fine particles had no significant influence on the proportion of erodible particles in soil.The change of soil erodibility by wind was not obvious in farmland soils.
中文关键词	农田风蚀 ; 细颗粒损失 ; 土壤理化性质 ; 风蚀可蚀性 ; 河北坝上
英文关键词	wind erosion of farmland the loss of fine particles soil property soil erodibility by wind Bashang district of Hebei Province
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:6235781
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238306
作者单位	1.河北师范大学资源与环境科学学院, 河北省环境演变与生态建设省级重点实验室, 石家庄, 河北 050024, 中国; 2.河北省科学院地理科学研究所, 河北省地理信息开发应用工程技术研究中心, 石家庄, 河北 050011, 中国
推荐引用方式 GB/T 7714	苑依笑,王仁德,常春平,等. 风蚀作用下农田土壤细颗粒的粒度损失特征及其对土壤性质影响[J],2018,32(2):104-109,119.
APA	苑依笑,王仁德,常春平,郭中领,&李庆.(2018).风蚀作用下农田土壤细颗粒的粒度损失特征及其对土壤性质影响.水土保持学报,32(2),104-109,119.
MLA	苑依笑,et al."风蚀作用下农田土壤细颗粒的粒度损失特征及其对土壤性质影响".水土保持学报 32.2(2018):104-109,119.