干旱区生态环境知识资源中心(Arid): 准东煤田露天矿区土壤~(137)Cs剖面分布特征及侵蚀速率估算

Arid

	准东煤田露天矿区土壤~(137)Cs剖面分布特征及侵蚀速率估算
其他题名	~(137)Cs Profile Distribution and Estimation of Soil Erosion Rate in Zhundong Opencast Mine Area
	刘巍 1; 曹月娥 1; 杨建军 1; 汪君 2; 王果 2; 李小华 1; 周颖 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2015
卷号	29 期号:3 页码:52-55,324
中文摘要	为定量测算准东煤田露天矿区土壤风蚀量,采用放射性元素~(137) Cs示踪法,对研究区各样点剖面土壤放射性活度进行分析。结果表明:非耕地~(137) Cs分布于015 cm的土层中,耕地达20 cm 土层;7个样点中,YN_7、YN_(15)为典型的侵蚀型剖面,YN_5为沉积型剖面,YN_(18)为典型的耕地型剖面,YN_2分布层比较完整,呈负指数形式的分布曲线,是理想的背景值样点,YN_(19) ~(137) Cs分布较浅,但表层却有较高的活度,表现为侵蚀沉积复合型剖面。各样点的侵蚀速率分析表明:农田受人类耕作影响,侵蚀速率极小,为0.240 t/(hm~2·a);发生侵蚀的样点几乎都达到了剧烈侵蚀的标准;在半固定沙丘,由于地形作用,有风蚀颗粒的堆积;土壤表面板结在很大程度上阻止了风蚀现象的发生,甚至可能发生堆积,这主要取决于土壤类型。在干旱区,利用~(137) Cs估算土壤侵蚀速率要综合考虑植被盖度、土地利用类型、地形、土壤类型等因子。
英文摘要	To quantitatively estimate soil erosion of Zhundong opencast mining area,~(137)Cs tracer technique was employed to analyze the radioactivity of 7 soil profiles in study area.The results showed that ~(137)Cs existed in 015 cm and 020 cm of soil in non-cultivated and cultivated land,respectively.The erosion characteristics of 7 soil profiles were analyzed based on the profile distribution and activity of ~(137)Cs.It was found that YN_7 and YN_(15) were typical soil eroded profiles,while YN_5 was a sedimentary profile and YN_(18) was a farmland profile.In YN_2,~(137)Cs distributed layers of ~(137)Cs were quite complete and showed a negative exponential distribution curve,which can be regarded as an ideal sampling site of ~(137)Cs background value.YN_(19) was an erosion-deposition profile,in which ~(137)Cs mainly distributed in shallow soil and showed high activity.Based on the profile distribution of ~(137)Cs,we analyzed the soil erosion rate in the 7 profiles and found that soil erosion rate of farmland was very low(0.240 t/(hm~2·a)) due to the effects of farming activities.However,serious erosion occurred in the sampling sites.On semifixed dune,the wind erosion particles were accumulated due to the terrain features.The compaction of surface soil greatly prevented wind erosion and even resulted in accumulation of wind erosion particles,which mainly depended on soil types.Generally,in arid area,vegetation coverage,land-use type,terrain and soil type should be considered in estimating wind erosion rate by ~(137)Cs technique.
中文关键词	风蚀 ; 侵蚀速率 ; 露天矿区 ; 准东煤田
英文关键词	~(137) Cs ~(137)Cs wind erosion erosion rate opencast mine area Zhundong coalfield
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:5456042
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233353
作者单位	1.新疆大学资源与环境科学学院, 教育部绿洲生态重点实验室, 乌鲁木齐, 新疆 830046, 中国; 2.核工业216大队, 乌鲁木齐, 新疆 830001, 中国
推荐引用方式 GB/T 7714	刘巍,曹月娥,杨建军,等. 准东煤田露天矿区土壤~(137)Cs剖面分布特征及侵蚀速率估算[J]. 新疆大学,2015,29(3):52-55,324.
APA	刘巍.,曹月娥.,杨建军.,汪君.,王果.,...&周颖.(2015).准东煤田露天矿区土壤~(137)Cs剖面分布特征及侵蚀速率估算.水土保持学报,29(3),52-55,324.
MLA	刘巍,et al."准东煤田露天矿区土壤~(137)Cs剖面分布特征及侵蚀速率估算".水土保持学报 29.3(2015):52-55,324.