Attributions of Evapotranspiration and Gross Primary Production Changes in Semi-Arid Region: A Case Study in the Water Source Area of the Xiong'an New Area in North China
文献类型：期刊论文
| 作者 | Zeng, Sidong3,4; Du, Hong1; Xia, Jun2,3,4; Wu, Jian3,4; Yang, Linhan3,4 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 14期号:5页码:24 |
| 关键词 | attributions DTVGM model semi-arid region ecohydrological processes |
| DOI | 10.3390/rs14051187 |
| 通讯作者 | Du, Hong(2014021@mail.scuec.edu.cn) |
| 英文摘要 | Investigating the attributions of evapotranspiration (ET) and gross primary production (GPP) changes is of great importance for regional, sustainable water resources and ecological management in semi-arid regions. Based on the simulation conducted during 2000-2019 by improving water-carbon coupling Distributed Time Variant Gain Model, the trends of ET and GPP were estimated and the driving factors were identified via 10 experimental scenarios in the water source area of the Xiong'an New Area in North China. The results show significant increases both in ET and GPP by 2.4 mm/a and 6.0 gC/m(2)/a in the region, respectively. At the annual scale, increasing precipitation dominates the ET uptrend. Air temperature, humidity and the interactive effects also contribute to the ET uptrend, and the contributions are 12.8%, 2.0% and 2.3%, respectively, while elevated atmospheric CO2 concentration (eCO(2)) and solar dimming lead to ET changes of about -7.2% and -12.4%, respectively. For the GPP changes, the increase in GPP is mainly caused by eCO(2), increasing precipitation and rising temperature with the contributions of 56.7%, 34.8% and 27.8%, respectively. Solar dimming, humidity and windspeed contribute -6.8%, -4.8% and -3.5% of the GPP changes. Compared to climate change, land use and cover change has smaller effects on both ET and GPP for the few changes in land coverage. At the seasonal scale, ET and GPP increase to a greater extent during the growing season in spring and summer than in autumn and winter. Precipitation, temperature and eCO(2) are generally the main causes for ET and GPP changes. Meanwhile, the decreasing humidity and rising temperature are dominant factors for ET and GPP increases, respectively, in winter. Furthermore, solar dimming has strong effects on ET reduction in autumn. The contribution of the interactive effects is much higher on a seasonal scale than annual scale, contributing to considerable decreases in ET and GPP in spring, increases in ET in autumn and winter, and an increase in GPP in winter. This study highlights the importance of considering water-carbon coupling on the attributions of ET and GPP changes and the differentiation of the effects by the abovementioned influential factors at annual and seasonal scales. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000768470300001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/15356]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Du, Hong |
| 作者单位 | 1.South Cent Minzu Univ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China 2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.Univ Chinese Acad Sci, Chongqing Sch, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Sidong,Du, Hong,Xia, Jun,et al. Attributions of Evapotranspiration and Gross Primary Production Changes in Semi-Arid Region: A Case Study in the Water Source Area of the Xiong'an New Area in North China[J]. REMOTE SENSING,2022,14(5):24. |
| APA | Zeng, Sidong,Du, Hong,Xia, Jun,Wu, Jian,&Yang, Linhan.(2022).Attributions of Evapotranspiration and Gross Primary Production Changes in Semi-Arid Region: A Case Study in the Water Source Area of the Xiong'an New Area in North China.REMOTE SENSING,14(5),24. |
| MLA | Zeng, Sidong,et al."Attributions of Evapotranspiration and Gross Primary Production Changes in Semi-Arid Region: A Case Study in the Water Source Area of the Xiong'an New Area in North China".REMOTE SENSING 14.5(2022):24. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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