干旱区生态环境知识资源中心(Arid): Utilization status of rainwater harvesting and its improvement techniques in bare karst areas for domestic use and ecological restoration

Arid

DOI	10.1007/s13146-018-0459-5
	Utilization status of rainwater harvesting and its improvement techniques in bare karst areas for domestic use and ecological restoration
	Jiang, Guanghui 1; Guo, Fang 1; Lo, Kwong Fai Andrew 2; Liu, Fan 1; Guo, Yongli 1; Wu, Weixiong 3; Polk, Jason S.4
通讯作者	Jiang, Guanghui
来源期刊	CARBONATES AND EVAPORITES
ISSN	0891-2556
EISSN	1878-5212
出版年	2019
卷号	34 期号:4 页码:1381-1390
英文摘要	Water imbalances remain the primary problem from the past to the coming future in karst area of South China. A well-admissive method to cope with drought and flood problems is under searching. Rainwater harvesting by water tanks has being an approved way to alleviate water shortage, but with some defects such as bad water quality, unstable sources, and limited volume. To find out its running status, 50 water tanks in a part region of Fengshan County were surveyed. One of them was chosen for online-monitoring and 25 water tanks were sampled for chemical analysis. The results show that there were three typical problems during its running. First, water tanks usually get dry in rainless months, especially in extremely drought events. Second, water quality declines once water has stored for about 100 days with no new supplement. The deterioration of water quality is related to the long-preserved time rather than exogenetic pollution. Third, the situation becomes more serious under the pressure of climate change and the rocky desertification. Therefore, a new rainwater harvesting strategy is proposed for improving this situation. The conception site model (CSM) in hill slope for tank location selection is the critical point, since water harvesting for tanks depends on slope characters. As a CSM example, the hillslope hydrology related to the overland flow, the resurgence of flow in epikarst, and vadose flow at Yaji Karst Experiment Site were investigated to illuminate the complexity of hydrological process and diversity of flow pattern. Then, it is suggested to make full use of different flows from slopes, especially to increase the availability of vadose flow. Finally, besides drinking purpose, water tanks should be extensively used for irrigation and reforestation to obtain economic return and support its maintenance.
英文关键词	Water tanks Karst hillslope Rainwater Vadose flow Water shortage
类型	Article
语种	英语
国家	Peoples R China ; Taiwan ; USA
收录类别	SCI-E
WOS记录号	WOS:000496621400014
WOS关键词	DROUGHT ; GUILIN ; CHINA
WOS类目	Geology
WOS研究方向	Geology
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311047
作者单位	1.Chinese Acad Geol Sci, Inst Karst Geol, Key Lab Karst Dynam, MLR & Guangxi, Guilin, Peoples R China; 2.Chinese Culture Univ, Coll Sci, Taipei, Taiwan; 3.Guangxi Hydraul Res Inst, Nanning, Peoples R China; 4.Western Kentucky Univ, Ctr Human GeoEnvironm Studies, Dept Geog & Geol, Bowling Green, KY 42101 USA
推荐引用方式 GB/T 7714	Jiang, Guanghui,Guo, Fang,Lo, Kwong Fai Andrew,et al. Utilization status of rainwater harvesting and its improvement techniques in bare karst areas for domestic use and ecological restoration[J],2019,34(4):1381-1390.
APA	Jiang, Guanghui.,Guo, Fang.,Lo, Kwong Fai Andrew.,Liu, Fan.,Guo, Yongli.,...&Polk, Jason S..(2019).Utilization status of rainwater harvesting and its improvement techniques in bare karst areas for domestic use and ecological restoration.CARBONATES AND EVAPORITES,34(4),1381-1390.
MLA	Jiang, Guanghui,et al."Utilization status of rainwater harvesting and its improvement techniques in bare karst areas for domestic use and ecological restoration".CARBONATES AND EVAPORITES 34.4(2019):1381-1390.