The chained effects of earlier vegetation activities and summer droughts on ecosystem productivity on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Chen, Ning2; Zhang, Yangjian3,4; Song, Changchun2,5; Xu, Mingjie6; Zhang, Tao6; Li, Meng1; Cong, Nan3; Zu, Jiaxing7; Zheng, Zhoutao3; Ma, Guobao2 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2022-06-15 |
| 卷号 | 321页码:13 |
| ISSN号 | 0168-1923 |
| 关键词 | Earlier vegetation activities Summer drought Compensate Carbon uptake Multiple scales observations The Tibetan Plateau |
| DOI | 10.1016/j.agrformet.2022.108975 |
| 通讯作者 | Zhang, Yangjian(zhangyj@igsnrr.ac.cn) ; Song, Changchun(songcc@iga.ac.cn) ; Huang, Ke(kehuang@igsnrr.ac.cn) |
| 英文摘要 | The knock-on effects between earlier vegetation activities and summer droughts may have important consequences for broad ecological processes. To date, little is known about how the chained effects drive the carbon and water cycles on the Tibetan Plateau (TP). Using the naturally occurring above-mentioned sequential events in spring and summer in 2015 and 2017, we applied the observations at the site, landscape, and regional scales to evaluate the chained effects on the TP. Our findings indicated that higher spring vegetation productivity is caused by early vegetation activities, partially compensated for summer drought-induced loss. Concurrently, increased spring evapotranspiration induced by earlier spring may drain soil water resources earlier, exacerbating summer water restrictions caused mainly by sparse precipitation. This lagged effect of early spring, accompanied by summer drought, significantly increased summer sensible heat flux by 23.2%. Remarkably, the mean air temperature (Ta) was lower than the baseline during drought. This decrease was contributed mainly by lower nighttime Ta, indicating that the region-specific characteristics of the TP could offset the heating effects as mentioned above. The characteristics of high altitude, low air pressure, and thin air could strongly weaken the cloud insulations. More substantial decreases in cloud amount during drought further decreased atmospheric counter radiations, leading to lower mean/nighttime Ta. The simulation results showed that lower mean Ta alleviated the decreases in gross primary productivity by 4.3% through reducing vapor pressure deficit by 5.1%. In conclusion, the present study highlighted the need to comprehensively consider the buffering effects of lower temperature during summer drought to precisely assess the chained effects on the TP. |
| WOS关键词 | CLIMATE ; CARBON ; PHENOLOGY ; SATELLITE ; RESPONSES ; IMPACTS ; FLUXES ; WATER |
| 资助项目 | outstanding youth scientist program of NSFC[41725003] ; National Natural Science Founda-tion of China[41991234] ; National Natural Science Founda-tion of China[42101109] ; National Natural Science Founda-tion of China[42071133] ; National Key Research & Development Program[2019YFA0607302] ; China Postdoctoral Science Foundation[2020M681058] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000798103100001 |
| 资助机构 | outstanding youth scientist program of NSFC ; National Natural Science Founda-tion of China ; National Key Research & Development Program ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/178214]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Yangjian; Song, Changchun; Huang, Ke |
| 作者单位 | 1.Nantong Univ, Sch Geog Sci, Nantong 226007, Peoples R China 2.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 5.Dalian Univ Technol, Sch Hydraul Engn, Dalian 116024, Peoples R China 6.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China 7.Nanning Normal Univ, Key Lab Environm Change & Resources Use Beibu Gulf, Minist Educ, Nanning 530001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Ning,Zhang, Yangjian,Song, Changchun,et al. The chained effects of earlier vegetation activities and summer droughts on ecosystem productivity on the Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2022,321:13. |
| APA | Chen, Ning.,Zhang, Yangjian.,Song, Changchun.,Xu, Mingjie.,Zhang, Tao.,...&Huang, Ke.(2022).The chained effects of earlier vegetation activities and summer droughts on ecosystem productivity on the Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,321,13. |
| MLA | Chen, Ning,et al."The chained effects of earlier vegetation activities and summer droughts on ecosystem productivity on the Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 321(2022):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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