干旱区生态环境知识资源中心(Arid): Evaluation of the drought resilience of indigenous irrigation water systems: a case study of dry zone Sri Lanka

Arid

DOI	10.1088/2515-7620/ad2a90
	Evaluation of the drought resilience of indigenous irrigation water systems: a case study of dry zone Sri Lanka
	Wickramasinghe, Romitha; Nakamura, Shinichiro
通讯作者	Nakamura, S
来源期刊	ENVIRONMENTAL RESEARCH COMMUNICATIONS
ISSN	2515-7620
出版年	2024
卷号	6 期号:3
英文摘要	The wave of modernization and globalization in the last century has rapidly involved a technological paradigm shift from indigenous irrigation water systems to modern systems in arid regions. Despite interest in the drought resilience of indigenous water systems, the impact of this paradigm shift on drought resilience remains poorly understood because previous studies have focused on fixed irrigation water systems. To fill this gap, we investigated the drought resilience of an indigenous and modern irrigation water system that coexists in the drought-prone Mahaweli H region of the Sri Lankan dry zone. To explain drought resilience, we quantified the historical irrigation system performance (1985-2021) of both water systems using the water duty indicator (i.e., the volume of water required to cultivate a unit land area). The statistical Pettitt test was used to detect significant change points in the time series of water duty, and we divided the time line into few periods based on the change points. Furthermore, a quantitative trend analysis of several socio-hydrological variables and a qualitative analysis of their socio-hydrological backgrounds with triggers of water duty were conducted to explain drought resilience path dependency in modern and indigenous water systems. The results indicated a higher drought resilience is embedded in the indigenous system as the mean water duty increment in drought years compared to non-drought years is 16.4% for the indigenous system and 58.3% for the modern system. In addition, drought resilience pathways that elucidated by water duty change points also demonstrated that indigenous water system features a higher drought resilience compared to the modern water system. The findings of this comparative study can contribute to the design of drought resilience improvement strategies in arid region irrigation water systems in a more comprehensive manner.
英文关键词	irrigation system performance water duty paradigm shift socio-hydrology human-agricultural systems yoda ela Sri Lanka
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001176171500001
WOS关键词	TRADITIONAL IRRIGATION ; CLIMATE VARIABILITY ; RIVER-BASIN ; RAINFALL ; PERSPECTIVES ; PERFORMANCE ; TRANSITION ; FRAMEWORK ; CULTURE ; SCALE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403634
推荐引用方式 GB/T 7714	Wickramasinghe, Romitha,Nakamura, Shinichiro. Evaluation of the drought resilience of indigenous irrigation water systems: a case study of dry zone Sri Lanka[J],2024,6(3).
APA	Wickramasinghe, Romitha,&Nakamura, Shinichiro.(2024).Evaluation of the drought resilience of indigenous irrigation water systems: a case study of dry zone Sri Lanka.ENVIRONMENTAL RESEARCH COMMUNICATIONS,6(3).
MLA	Wickramasinghe, Romitha,et al."Evaluation of the drought resilience of indigenous irrigation water systems: a case study of dry zone Sri Lanka".ENVIRONMENTAL RESEARCH COMMUNICATIONS 6.3(2024).