干旱区生态环境知识资源中心(Arid): Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis

Arid

DOI	10.3390/land11081284
	Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis
	Wu, Luhua; Wang, Shijie; Bai, Xiaoyong; Chen, Fei; Li, Chaojun; Ran, Chen; Zhang, Sirui
通讯作者	Bai, XY
来源期刊	LAND
EISSN	2073-445X
出版年	2022
卷号	11 期号:8
英文摘要	Identifying the impacts of climatic factors on runoff change has become a central topic in climate and hydrology research. This issue, however, has received minimal attention in karst watersheds worldwide. Multi-resolution analysis (MRA), continuous wavelet transform (CWT), cross wavelet transform (XWT) and wavelet transform coherence (WTC) are used to study the teleconnection in time and frequency between climate change and hydrological processes in a typical karst watershed at different time scales. The main results are: (1) All climatic factors exhibit a main cycle at 12-month time scales with runoff changes, but the main periodic bandwidth of rainfall on runoff changes is much wider than that of temperature and evaporation, indicating that rainfall is the main factor affecting runoff changes. (2) In other cycles, the impact of rainfall on runoff changes is the interlacing phenomena with positive and negative, but the impact of temperature and evaporation on runoff change is mainly negative. (3) The response of runoff to rainfall is in time in the high-energy region and the low-energy significant-correlation region and has shown a positive correlation with a smaller phase angle, but it is slightly lagged at 16-month time scales. Moreover, the runoff change lags behind temperature and evaporation for 1-2 months in those regions. (4) It has been found that there is a strong effect of rainfall over runoff, but a lesser effect of temperature and evaporation over runoff. The study sheds light on the main teleconnections between rainfall, evapotranspiration and surface runoff, which in turn might help to attain the better management of water resources in typical karst watersheds.
英文关键词	karst watershed runoff change climate factors wavelet analysis
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:000845651500001
WOS关键词	SEDIMENT DISCHARGE ; ROCKY DESERTIFICATION ; EASTERN TIANSHAN ; IMPACTS ; REGION ; VARIABILITY ; CATCHMENTS ; STREAMFLOW ; RESOURCES ; EPIKARST
WOS类目	Environmental Studies
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/2XILL650/393684
推荐引用方式 GB/T 7714	Wu, Luhua,Wang, Shijie,Bai, Xiaoyong,et al. Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis[J],2022,11(8).
APA	Wu, Luhua.,Wang, Shijie.,Bai, Xiaoyong.,Chen, Fei.,Li, Chaojun.,...&Zhang, Sirui.(2022).Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis.LAND,11(8).
MLA	Wu, Luhua,et al."Identifying the Multi-Scale Influences of Climate Factors on Runoff Changes in a Typical Karst Watershed Using Wavelet Analysis".LAND 11.8(2022).