干旱区生态环境知识资源中心(Arid): Groundwater quality and land use change in a typical karst agricultural regiona case study of Xiaojiang watershed, Yunnan

Arid

DOI	10.1007/s11442-006-0403-9
	Groundwater quality and land use change in a typical karst agricultural regiona case study of Xiaojiang watershed, Yunnan
	Jiang Yongjun; Yuan Daixian; Xie Shiyou; Li Linli; Zhang Gui; He Raosheng
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2006
卷号	16 期号:4 页码:405-414
英文摘要	Taking the typical karst agricultural region, Xiaojiang watershed in Luxi of Yunnan Province as a research unit, utilizing the groundwater quality data in 1982 and 2004, the aerial photos in 1982 and TM images in 2004, supported by the GIS, we probe into the law and the reason of its space-time change of the groundwater quality over the past 22 years in the paper. The results show: (1) There were obvious temporal and spatial changes of groundwater quality during the past 22 years. (2) Concentrations ofNHJ, SO_4~(2-), NO_3~-, NO_2~-, Cl~- and the pH value, total hardness, total alkalinity increased significantly, in which NH_4~+, NO_3~-, and NO_2~- of groundwater exceeded the drinking water standards as a result of non-point pollution caused hy the expansion of cultivated land and mass use of the fertilizer and pesticide. (3) Oppositely, Ca~(2+) and HCO_3 showed an obvious decline trend due to forest reduction and degradation and stony desertification. Meantime, there was a dynamic relation between the groundwater quality change and the land use change.
英文关键词	groundwater quality space-time change land use change typical karst agricultural region QIS Xiaojiang watershed
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Geology
CSCD记录号	CSCD:2431555
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334907
作者单位	Jiang Yongjun, School of Geographical Sciences, Southwest University, Chongqing 400715.; Yuan Daixian, School of Geographical Sciences, Southwest University, Chongqing 400715.; Xie Shiyou, School of Geographical Sciences, Southwest University, Chongqing 400715.; Li Linli, School of Geographical Sciences, Southwest University, Chongqing 400715.; Zhang Gui, Institute of Geology Investigation in Yunnan Province, Kunming, Yunnan 650041, China.; He Raosheng, Institute of Geology Investigation in Yunnan Province, Kunming, Yunnan 650041, China.
推荐引用方式 GB/T 7714	Jiang Yongjun,Yuan Daixian,Xie Shiyou,et al. Groundwater quality and land use change in a typical karst agricultural regiona case study of Xiaojiang watershed, Yunnan[J],2006,16(4):405-414.
APA	Jiang Yongjun,Yuan Daixian,Xie Shiyou,Li Linli,Zhang Gui,&He Raosheng.(2006).Groundwater quality and land use change in a typical karst agricultural regiona case study of Xiaojiang watershed, Yunnan.Journal of Geographical Sciences,16(4),405-414.
MLA	Jiang Yongjun,et al."Groundwater quality and land use change in a typical karst agricultural regiona case study of Xiaojiang watershed, Yunnan".Journal of Geographical Sciences 16.4(2006):405-414.