Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.catena.2015.02.001 |
50-year evapotranspiration declining and potential causations in subtropical Guangdong province, southern China | |
Chen, Xiuzhi1; Liu, Xiaodong1,2; Zhou, Guoyi1; Han, Liusheng3; Liu, Wei2,3,4,5; Liao, Jishan6 | |
通讯作者 | Zhou, Guoyi |
来源期刊 | CATENA |
ISSN | 0341-8162 |
EISSN | 1872-6887 |
出版年 | 2015 |
卷号 | 128页码:185-194 |
英文摘要 | Background: Evapotranspiration (ET) is an important flux term in the terrestrial hydrologic cycle system that integrated atmospheric and land surfaces, hydrological and biological processes. Any variations of the hydrological processes induced by climate change and forest management would be significantly reflected in ET component. Methods: In this paper, we firstly calculated Guangdong’s 50-year annual, humid- and dry-season ET jointly based on the water balance model and a physical-based ET model. Then, the separate contributions of climate change and reforestation on ET changes were evaluated by the double mass curve method. Results: The time-series annual ET declined significantly (p < 0.001) during the past 50 years. The year 1980 showed to be an important change point. Both humid- and dry-season ET kept much stable during the former period 1956-1979, while decreased significantly (p < 0.001) during the later period 1980-2006. Climate change and reforestation contributed for about -34.02 and 31.03 mm/year for the annual ET variations, while about -28.18 and 27.25 mm/year for the dry seasons, and about -5.84 and 3.78 mm/year for the humid seasons, respectively. Discussions and conclusions: By comparison, the positive contributions of reforestation on ET changes were completely offset by the negative contributions of climate changes. Climate changes were the key factors responsible for the reduction of Guangdong’s ET. In particular, the regional ET in dry seasons was quite more sensitive to climate change and land cover changes, while much less sensitive in humid seasons. Our results also confirmed that land cover changes would have little impacts on the regional Er changes when P/PET > 1, but might cause greatly influences on ET when P/PET < 1. These conclusions indicate that afforestation might be actively encouraged in humid regions, but should be treated cautiously in non-humid regions or even be limited in arid regions. It will be directly useful for guiding government in future forest management. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Evapotranspiration Climate change Forest coverage Precipitation pattern Southern China |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000351806600016 |
WOS关键词 | CLIMATE-CHANGE ; SOIL-MOISTURE ; RIVER-BASIN ; WATER YIELD ; LAND-COVER ; ANNUAL STREAMFLOW ; IMPACTS ; VEGETATION ; SCALE ; EVAPORATION |
WOS类目 | Geosciences, Multidisciplinary ; Soil Science ; Water Resources |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/186424 |
作者单位 | 1.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 10094, Peoples R China; 3.Guangzhou Inst Geog, Guangzhou 510070, Guangdong, Peoples R China; 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China; 5.Guangdong Climate Ctr, Guangzhou 510080, Guangdong, Peoples R China; 6.Univ Notre Dame, Dept Biol Sci, Notre Dame, IN 46556 USA |
推荐引用方式 GB/T 7714 | Chen, Xiuzhi,Liu, Xiaodong,Zhou, Guoyi,et al. 50-year evapotranspiration declining and potential causations in subtropical Guangdong province, southern China[J],2015,128:185-194. |
APA | Chen, Xiuzhi,Liu, Xiaodong,Zhou, Guoyi,Han, Liusheng,Liu, Wei,&Liao, Jishan.(2015).50-year evapotranspiration declining and potential causations in subtropical Guangdong province, southern China.CATENA,128,185-194. |
MLA | Chen, Xiuzhi,et al."50-year evapotranspiration declining and potential causations in subtropical Guangdong province, southern China".CATENA 128(2015):185-194. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
50-year evapotranspi(3257KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。