A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems
文献类型：期刊论文
| 作者 | Gao, Guangyao ; Wang, Di; Zha, Tianshan; Wang, Lixin; Fu, Bojie
|
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-03 |
| 卷号 | 606期号:0页码:127417 |
| 关键词 | SAP FLOW CHARACTERISTICS WATER-USE EFFICIENCY SOIL-WATER CARAGANA-KORSHINSKII DESERT REGION ENVIRONMENTAL-FACTORS HIPPOPHAE-RHAMNOIDES STOMATAL CONDUCTANCE CANOPY CONDUCTANCE VEGETATION CONTROL |
| ISSN号 | 0022-1694 |
| 英文摘要 | Transpiration (T) is a fundamental process in understanding the ecophysiology of plants, and it is the dominant component of evapotranspiration (ET) in the terrestrial water cycle. Although previous studies have examined T characteristics of shrub ecosystems in some regions, global-scale synthesis that integrates the spatial variations of T, ET and ratio of T to ET (T/ET) and the associated influences of bio-/abiotic factors in the shrub ecosystems is currently lacking. In this study, we synthesized and analyzed T rate, ET rate and T/ET of the shrub ecosystems from the peer-reviewed articles using field observations around the world. These studies were mainly distributed in drylands with aridity index (ratio of precipitation to potential ET) < 0.65, which accounted for 86.4% of the study locations. Globally, the mean daily T and ET rates of shrubs were 1.5 +/- 1.0 mm d(-1) and 2.4 +/- 0.8 mm d(-1), with coefficient of variation of 63.2% and 36.2% among the study locations, respectively. Mean T/ET of the shrubs over the growing season was 0.54 +/- 0.14, which was generally lower compared with forest, grassland and cropland ecosystems. The T rate of shrubs was positively related to shrub age, shrub height, leaf area index, and vegetation coverage (p < 0.05), and the effects of biotic factors on T rate were stronger compared with abiotic factors. The ET rate of shrubs was positively related to aridity index, long-term annual mean precipitation, mean soil water content, as well as shrub height and vegetation coverage (p < 0.05). By contrast, the effects of biotic factors on variations of shrub T/ET were weaker than those of abiotic factors, and the T/ET of shrubs was negatively related to aridity index, long-term annual mean precipitation and mean soil water content, but positively related to latitude (p < 0.05). This study is an important supplement of our knowledge gap in terrestrial water cycle, and the findings suggest that T accounted for about half of the water into atmosphere from shrub ecosystems, and the variations of T rate of shrubs were mainly controlled by biotic factors, whereas ET rate and T/ET was mainly affected by abiotic factors. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47189]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Fu, Bojie |
| 作者单位 | 1.Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China 2.Indiana Univ Purdue Univ Indianapolis, Dept Earth Sci, Indianapolis, IN 46202 USA 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.China Agr Univ, Coll Water Resources & Civil Engn, Beijing 100083, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Guangyao,Wang, Di,Zha, Tianshan,et al. A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems[J]. JOURNAL OF HYDROLOGY,2022,606(0):127417. |
| APA | Gao, Guangyao,Wang, Di,Zha, Tianshan,Wang, Lixin,&Fu, Bojie.(2022).A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems.JOURNAL OF HYDROLOGY,606(0),127417. |
| MLA | Gao, Guangyao,et al."A global synthesis of transpiration rate and evapotranspiration partitioning in the shrub ecosystems".JOURNAL OF HYDROLOGY 606.0(2022):127417. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
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。