An Appraisal of Two Tracer Methods for Estimating Tillage Erosion Rates under Hoeing Tillage

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	An Appraisal of Two Tracer Methods for Estimating Tillage Erosion Rates under Hoeing Tillage
	J.H. Zhang
刊名	Procedia Environmental Sciences
	2011
卷号	11 期号:Part C 页码:1227-1233
关键词	Magnetic tracer Tillage erosion Tillage translocation Hoeing tillage Hillslope
通讯作者	J.H. Zhang
中文摘要	An increasing recognition of tillage erosion processes has shown that soil redistribution by tillage directly contributes to soil loss in mechanically and nonmechanically agricultural areas worldwide. Soil translocation by tillage is normally measured by means of tracers, with which a volume of soil is labelled, and therefore yielding tillage erosion rates in a field. Two tracer methods for estimating tillage erosion rates were appraised to examine the application adaption to local conditions in the hilly areas, southwestern China, in terms of the accuracy, measurement sensitivity, manipulation facility, and time cost. The two tracer methods had a similar measurement accuracy of soil translocation. However, for the magnetic tracer method the result of tracer distribution after tillage was immediately obtained in the field, while there was a need to do a follow-up indoor determination for the stone chip method. The magnetic tracer method only required collecting a small volume of soil samples, while a large quantity of soil (i.e. all the soils into which tracers possibly redistributed) was collected to recover all the stone chips from tilled soils. As a result, the magnetic tracer method would be much time saving compared to the stone chip method. It is suggested that the magnetic tracer method would rather be used when there are large quantities of sampling plots to be measured on steep hillslopes of the hilly areas where hoeing tillage is practiced.
英文摘要	An increasing recognition of tillage erosion processes has shown that soil redistribution by tillage directly contributes to soil loss in mechanically and nonmechanically agricultural areas worldwide. Soil translocation by tillage is normally measured by means of tracers, with which a volume of soil is labelled, and therefore yielding tillage erosion rates in a field. Two tracer methods for estimating tillage erosion rates were appraised to examine the application adaption to local conditions in the hilly areas, southwestern China, in terms of the accuracy, measurement sensitivity, manipulation facility, and time cost. The two tracer methods had a similar measurement accuracy of soil translocation. However, for the magnetic tracer method the result of tracer distribution after tillage was immediately obtained in the field, while there was a need to do a follow-up indoor determination for the stone chip method. The magnetic tracer method only required collecting a small volume of soil samples, while a large quantity of soil (i.e. all the soils into which tracers possibly redistributed) was collected to recover all the stone chips from tilled soils. As a result, the magnetic tracer method would be much time saving compared to the stone chip method. It is suggested that the magnetic tracer method would rather be used when there are large quantities of sampling plots to be measured on steep hillslopes of the hilly areas where hoeing tillage is practiced.
学科主题	土壤学 ; 环境学
收录类别	SCI
语种	英语
公开日期	2012-09-20
内容类型	期刊论文
源URL	[http://192.168.143.20:8080/handle/131551/4206]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
推荐引用方式 GB/T 7714	J.H. Zhang. An Appraisal of Two Tracer Methods for Estimating Tillage Erosion Rates under Hoeing Tillage[J]. Procedia Environmental Sciences,2011,11(Part C):1227-1233.
APA	J.H. Zhang.(2011).An Appraisal of Two Tracer Methods for Estimating Tillage Erosion Rates under Hoeing Tillage.Procedia Environmental Sciences,11(Part C),1227-1233.
MLA	J.H. Zhang."An Appraisal of Two Tracer Methods for Estimating Tillage Erosion Rates under Hoeing Tillage".Procedia Environmental Sciences 11.Part C(2011):1227-1233.