Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades
Abstract Projected increases in precipitation variability are expected to profoundly impact terrestrial vegetation productivity. Notably, the absolute change in ecosystem productivity to same amount of precipitation increase versus decrease may not be same. However, the generalization of this asymme...
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL113861 |
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| author | Licong Dai Minqi Liang Anping Chen Guojiao Yang Chuan Jin Wenping Yuan Zhongmin Hu |
| author_facet | Licong Dai Minqi Liang Anping Chen Guojiao Yang Chuan Jin Wenping Yuan Zhongmin Hu |
| author_sort | Licong Dai |
| collection | DOAJ |
| description | Abstract Projected increases in precipitation variability are expected to profoundly impact terrestrial vegetation productivity. Notably, the absolute change in ecosystem productivity to same amount of precipitation increase versus decrease may not be same. However, the generalization of this asymmetry, as well as its potential spatiotemporal variations, has rarely been assessed at the global scale. Here, we used multiple streams of satellite observation and found that asymmetry decreased along the humidity index gradient, indicating higher productivity pulse than decrease under dry climate conditions, and the asymmetry shifted from positive in dry areas to weakly negative in wet areas. Furthermore, the asymmetry increased significantly over the past two decades across most ecosystems. Climate change, particularly changes in precipitation, was the dominating factor behind the increasing global asymmetry over the last two decades. Our results suggest that increased precipitation variability may enhance vegetation productivity in arid regions, grassland, and shrub ecosystems, but could reduce productivity in forests. |
| format | Article |
| id | doaj-art-9cb5ae443546472480fb224969a09bda |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-9cb5ae443546472480fb224969a09bda2025-08-20T03:52:32ZengWileyGeophysical Research Letters0094-82761944-80072025-03-01526n/an/a10.1029/2024GL113861Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two DecadesLicong Dai0Minqi Liang1Anping Chen2Guojiao Yang3Chuan Jin4Wenping Yuan5Zhongmin Hu6Hainan Baoting Tropical Rainforest Ecosystem Observation and Research Station School of Ecology Hainan University Haikou ChinaSchool of Atmospheric Sciences Sun Yat‐sen University Zhuhai ChinaDepartment of Biology and Graduate Degree Program in Ecology Colorado State University Fort Collins CO USAHainan Baoting Tropical Rainforest Ecosystem Observation and Research Station School of Ecology Hainan University Haikou ChinaHainan Baoting Tropical Rainforest Ecosystem Observation and Research Station School of Ecology Hainan University Haikou ChinaCollege of Urban and Environmental Sciences Peking University Beijing ChinaHainan Baoting Tropical Rainforest Ecosystem Observation and Research Station School of Ecology Hainan University Haikou ChinaAbstract Projected increases in precipitation variability are expected to profoundly impact terrestrial vegetation productivity. Notably, the absolute change in ecosystem productivity to same amount of precipitation increase versus decrease may not be same. However, the generalization of this asymmetry, as well as its potential spatiotemporal variations, has rarely been assessed at the global scale. Here, we used multiple streams of satellite observation and found that asymmetry decreased along the humidity index gradient, indicating higher productivity pulse than decrease under dry climate conditions, and the asymmetry shifted from positive in dry areas to weakly negative in wet areas. Furthermore, the asymmetry increased significantly over the past two decades across most ecosystems. Climate change, particularly changes in precipitation, was the dominating factor behind the increasing global asymmetry over the last two decades. Our results suggest that increased precipitation variability may enhance vegetation productivity in arid regions, grassland, and shrub ecosystems, but could reduce productivity in forests.https://doi.org/10.1029/2024GL113861precipitation variabilityspatial patterntemporal trendvegetation productivity |
| spellingShingle | Licong Dai Minqi Liang Anping Chen Guojiao Yang Chuan Jin Wenping Yuan Zhongmin Hu Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades Geophysical Research Letters precipitation variability spatial pattern temporal trend vegetation productivity |
| title | Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades |
| title_full | Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades |
| title_fullStr | Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades |
| title_full_unstemmed | Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades |
| title_short | Increased Asymmetry of Ecosystem Productivity Responses to Precipitation in Recent Two Decades |
| title_sort | increased asymmetry of ecosystem productivity responses to precipitation in recent two decades |
| topic | precipitation variability spatial pattern temporal trend vegetation productivity |
| url | https://doi.org/10.1029/2024GL113861 |
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