An evapotranspiration deficit-based drought index to detect variability of terrestrial carbon productivity in the Middle East
文献类型：期刊论文
| 作者 | Alsafadi, Karam2; Al-Ansari, Nadhir4; Mokhtar, Ali1,3,5; Mohammed, Safwan6; Elbeltagi, Ahmed7,8; Sammen, Saad Sh9; Bi, Shuoben2 |
| 刊名 | ENVIRONMENTAL RESEARCH LETTERS
 |
| 出版日期 | 2022 |
| 卷号 | 17期号:1页码:15 |
| 关键词 | gross primary productivity SEDI ecosystem dynamics terrestrial carbon GLEAM dataset |
| ISSN号 | 1748-9326 |
| DOI | 10.1088/1748-9326/ac4765 |
| 通讯作者 | Bi, Shuoben(bishuoben@163.com) |
| 英文摘要 | The primary driver of the land carbon sink is gross primary productivity (GPP), the gross absorption of carbon dioxide (CO2) by plant photosynthesis, which currently accounts for about one-quarter of anthropogenic CO2 emissions per year. This study aimed to detect the variability of carbon productivity using the standardized evapotranspiration deficit index (SEDI). Sixteen countries in the Middle East (ME) were selected to investigate drought. To this end, the yearly GPP dataset for the study area, spanning the 35 years (1982-2017) was used. Additionally, the Global Land Evaporation Amsterdam Model (GLEAM, version 3.3a), which estimates the various components of terrestrial evapotranspiration (annual actual and potential evaporation), was used for the same period. The main findings indicated that productivity in croplands and grasslands was more sensitive to the SEDI in Syria, Iraq, and Turkey by 34%, 30.5%, and 29.6% of cropland area respectively, and 25%, 31.5%, and 30.5% of grass land area. A significant positive correlation against the long-term data of the SEDI was recorded. Notably, the GPP recorded a decline of >60% during the 2008 extreme drought in the north of Iraq and the northeast of Syria, which concentrated within the agrarian ecosystem and reached a total vegetation deficit with 100% negative anomalies. The reductions of the annual GPP and anomalies from 2009 to 2012 might have resulted from the decrease in the annual SEDI at the peak 2008 extreme drought event. Ultimately, this led to a long delay in restoring the ecosystem in terms of its vegetation cover. Thus, the proposed study reported that the SEDI is more capable of capturing the GPP variability and closely linked to drought than commonly used indices. Therefore, understanding the response of ecosystem productivity to drought can facilitate the simulation of ecosystem changes under climate change projections. |
| WOS关键词 | GROSS PRIMARY PRODUCTION ; NET PRIMARY PRODUCTIVITY ; GLOBAL CLIMATE-CHANGE ; AGRICULTURAL DROUGHT ; SOIL-MOISTURE ; VEGETATION ; IMPACTS ; SATELLITE ; ECOSYSTEMS ; REDUCTION |
| 资助项目 | national natural science foundation of china[41971340] ; national natural science foundation of china[4127141] |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000742480500001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | national natural science foundation of china |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/169766]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bi, Shuoben |
| 作者单位 | 1.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China 3.Cairo Univ, Fac Agr, Dept Agr Engn, Giza 12613, Egypt 4.Lulea Univ Technol, Civil Environm & Nat Resources Engn, S-97187 Lulea, Sweden 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 6.Univ Debrecen, Inst Land Use Technol & Reg Dev, H-4032 Debrecen, Hungary 7.Mansoura Univ, Fac Agr, Agr Engn Dept, Mansoura 35516, Egypt 8.Zhejiang Univ, Coll Environm & Resource Sci, Hangzhou 310058, Peoples R China 9.Univ Diyala, Coll Engn, Dept Civil Engn, Baquba 32001, Diyala Governor, Iraq |
| 推荐引用方式 GB/T 7714 | Alsafadi, Karam,Al-Ansari, Nadhir,Mokhtar, Ali,et al. An evapotranspiration deficit-based drought index to detect variability of terrestrial carbon productivity in the Middle East[J]. ENVIRONMENTAL RESEARCH LETTERS,2022,17(1):15. |
| APA | Alsafadi, Karam.,Al-Ansari, Nadhir.,Mokhtar, Ali.,Mohammed, Safwan.,Elbeltagi, Ahmed.,...&Bi, Shuoben.(2022).An evapotranspiration deficit-based drought index to detect variability of terrestrial carbon productivity in the Middle East.ENVIRONMENTAL RESEARCH LETTERS,17(1),15. |
| MLA | Alsafadi, Karam,et al."An evapotranspiration deficit-based drought index to detect variability of terrestrial carbon productivity in the Middle East".ENVIRONMENTAL RESEARCH LETTERS 17.1(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
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