The global greening continues despite increased drought stress since 2000
Increases or decreases in remote sensing-based vegetation greenness are usually referred to as greening or browning. The CO2 fertilization along with land management determined that greening is dominant. However, recently global browning signals due to drought stress have also been widely reported....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Global Ecology and Conservation |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989423004262 |
| _version_ | 1827375542238707712 |
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| author | Xin Chen Tiexi Chen Bin He Shuci Liu Shengjie Zhou Tingting Shi |
| author_facet | Xin Chen Tiexi Chen Bin He Shuci Liu Shengjie Zhou Tingting Shi |
| author_sort | Xin Chen |
| collection | DOAJ |
| description | Increases or decreases in remote sensing-based vegetation greenness are usually referred to as greening or browning. The CO2 fertilization along with land management determined that greening is dominant. However, recently global browning signals due to drought stress have also been widely reported. In this study, We used the four latest leaf area index (LAI) datasets to explore this controversial topic, and found that global greening was not only present (trend between 3.1–6.4 ×10−3 m2 m−2 yr−1) but also continued (growth rate trend between 3.3–6.4 ×10−4 m2 m−2 yr−2) during 2001–2020. Greening acceleration occurred in 55.15% of the globe (positive trend and positive growth rate trend), while browning acceleration occurred in only 7.28% (negative trend and positive growth rate trend). Combined with meteorological variables, we found that CO2 change dominated the LAI trend, while climate change largely determined the LAI growth rate trend. Importantly, our study highlighted that drought trend did not necessarily trigger vegetation browning, but slowed down the rate of greening. |
| first_indexed | 2024-03-08T11:53:22Z |
| format | Article |
| id | doaj.art-79daa01bb06a4b86a460af665cc265a8 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-03-08T11:53:22Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-79daa01bb06a4b86a460af665cc265a82024-01-24T05:21:13ZengElsevierGlobal Ecology and Conservation2351-98942024-01-0149e02791The global greening continues despite increased drought stress since 2000Xin Chen0Tiexi Chen1Bin He2Shuci Liu3Shengjie Zhou4Tingting Shi5School of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, ChinaSchool of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China; Qinghai Provincial Key Laboratory of Plateau Climate Change and Corresponding Ecological and Environmental Effects, Qinghai University of Science and Technology, Xining 810016, Qinghai, China; Corresponding author at: School of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, China.College of Global Change and Earth System Science, Beijing Normal University, Beijing, ChinaDepartment of Environment and Science, Queensland Government, 4102 Brisbane, QLD, AustraliaSchool of Geographical Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu, ChinaSchool of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing, ChinaIncreases or decreases in remote sensing-based vegetation greenness are usually referred to as greening or browning. The CO2 fertilization along with land management determined that greening is dominant. However, recently global browning signals due to drought stress have also been widely reported. In this study, We used the four latest leaf area index (LAI) datasets to explore this controversial topic, and found that global greening was not only present (trend between 3.1–6.4 ×10−3 m2 m−2 yr−1) but also continued (growth rate trend between 3.3–6.4 ×10−4 m2 m−2 yr−2) during 2001–2020. Greening acceleration occurred in 55.15% of the globe (positive trend and positive growth rate trend), while browning acceleration occurred in only 7.28% (negative trend and positive growth rate trend). Combined with meteorological variables, we found that CO2 change dominated the LAI trend, while climate change largely determined the LAI growth rate trend. Importantly, our study highlighted that drought trend did not necessarily trigger vegetation browning, but slowed down the rate of greening.http://www.sciencedirect.com/science/article/pii/S2351989423004262Leaf area indexGrowth rateGlobal greeningClimate changeDrought trend |
| spellingShingle | Xin Chen Tiexi Chen Bin He Shuci Liu Shengjie Zhou Tingting Shi The global greening continues despite increased drought stress since 2000 Global Ecology and Conservation Leaf area index Growth rate Global greening Climate change Drought trend |
| title | The global greening continues despite increased drought stress since 2000 |
| title_full | The global greening continues despite increased drought stress since 2000 |
| title_fullStr | The global greening continues despite increased drought stress since 2000 |
| title_full_unstemmed | The global greening continues despite increased drought stress since 2000 |
| title_short | The global greening continues despite increased drought stress since 2000 |
| title_sort | global greening continues despite increased drought stress since 2000 |
| topic | Leaf area index Growth rate Global greening Climate change Drought trend |
| url | http://www.sciencedirect.com/science/article/pii/S2351989423004262 |
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