Assessment of mercury erosion by surface water in Wanshan mercury mining area

	Assessment of mercury erosion by surface water in Wanshan mercury mining area
	ZhiHui Dai; Xinbin Feng; Chao Zhang; Lihai Shang; Guangle Qiu
通讯作者	Xinbin Feng
	2013
发表期刊	Environmental Research
卷号	125 期号:SI 页码:2-11
摘要	Soil erosion is a main cause of land degradation, and in its accelerated form is also one of the most serious ecological environmental problems. Moreover, there are few studies on migration of mercury (Hg) induced by soil erosion in seriously Hg-polluted districts. This paper selected Wanshan Hg mining area, SW China as the study area. Revised universal soil loss equation (RUSLE) and Geographic information system (GIS) methods were applied to calculate soil and Hg erosion and to classify soil erosion intensity. Our results show that the soil erosion rate can reach up to 600,884 t km(-2) yr(-1). Surfaces associated with very slight and extremely severe erosion include 76.6% of the entire land in Wanshan. Furthermore, the cumulative erosion rates in the area impacted by extremely severe erosion make up 90.5% of the total. On an annual basis, Hg surface erosion load was predicted to be 505 kg yr(-1) and the corresponding mean migration flux of Hg was estimated to be 3.02 kg km(-2) yr(-1). The erosion loads of Hg resulting from farmland and meadow soil were 175 and 319 kg yr(-1) respectively, which were enhanced compared to other landscape types due to the fact that they are generally located in the steep zones associated with significant reclamation. Contributing to establish a mass balance of Hg in Wanshan Hg mining area, this study supplies a dependable scientific basis for controlling soil and water erosion in the local ecosystems. Land use change is the most effective way for reducing Hg erosion load in Wanshan mining area.
关键词	Soil Erosion Hg Migration Mercury Contaminated Area Guizhou
学科领域	环境地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/5036
专题	环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文环境地球化学国家重点实验室
通讯作者	Xinbin Feng
推荐引用方式 GB/T 7714	ZhiHui Dai,Xinbin Feng,Chao Zhang,et al. Assessment of mercury erosion by surface water in Wanshan mercury mining area[J]. Environmental Research,2013,125(SI):2-11.
APA	ZhiHui Dai,Xinbin Feng,Chao Zhang,Lihai Shang,&Guangle Qiu.(2013).Assessment of mercury erosion by surface water in Wanshan mercury mining area.Environmental Research,125(SI),2-11.
MLA	ZhiHui Dai,et al."Assessment of mercury erosion by surface water in Wanshan mercury mining area".Environmental Research 125.SI(2013):2-11.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Assessment of mercur（4678KB）			开放获取	使用许可	浏览请求全文