文献类型：期刊文献

英文题名：Identify temporal trend of air temperature and its impact on forest stream flow in Lower Mississippi River Alluvial Valley using wavelet analysis

作者：Ouyang, Ying[1] Parajuli, Prem B.[2] Li, Yide[3] Leininger, Theodor D.[4] Feng, Gary[5]

第一作者：Ouyang, Ying

通信作者：Ouyang, Y[1]

机构：[1]US Forest Serv, USDA, Ctr Bottomland Hardwoods Res, 775 Stone Blvd,Thompson Hall,Room 309, Mississippi State, MS 39762 USA;[2]Mississippi State Univ, Dept Agr & Biol Engn, Mississippi State, MS 39762 USA;[3]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[4]US Forest Serv, USDA, Ctr Bottomland Hardwoods Res, 432 Stoneville Rd, Stoneville, MS 38776 USA;[5]USDA ARS, Crop Sci Res Lab, 810 Hwy 12 East, Mississippi State, MS 39762 USA

年份：2017

卷号：198

起止页码：21-31

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：;EI(收录号：20233314537213);Scopus(收录号：2-s2.0-85018929739);WOS:【SCI-EXPANDED(收录号:WOS:000403519100003)】；

基金：The study was supported by USDA-NIFA-AFRI competitive grant program (Project # 67020-21407).

语种：英文

外文关键词：Air temperature; Climate change; LMRAV; Stream discharge; Wavelet analysis

摘要：Characterization of stream flow is essential to water resource management, water supply planning, environmental protection, and ecological restoration; while air temperature variation due to climate change can exacerbate stream flow and add instability to the flow. In this study, the wavelet analysis technique was employed to identify temporal trend of air temperature and its impact upon forest stream flows in Lower Mississippi River Alluvial Valley (LMRAV). Four surface water monitoring stations, which locate near the headwater areas with very few land use disturbances and the long-term data records (60-90 years) in the LMRAV, were selected to obtain stream discharge and air temperature data. The wavelet analysis showed that air temperature had an increasing temporal trend around its mean value during the past several decades in the LMRAV, whereas stream flow had a decreasing temporal trend around its average value at the same time period in the same region. Results of this study demonstrated that the climate in the LMRAV did get warmer as time elapsed and the streams were drier as a result of warmer air temperature. This study further revealed that the best way to estimate the temporal trends of air temperature and stream flow was to perform the wavelet transformation around their mean values. Published by Elsevier Ltd.