Pedosphere 35(1): 182--192, 2025
ISSN 1002-0160/CN 32-1315/P
©2025 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Drought effects on nitrogen and phosphorus releases from litter vary between arid and humid areas: A meta-analysis |
Yanyu JIANG1, Fuzhong WU1,2,3, Qiuxia WU1, Siqi WU1, Jingjing ZHU1, Xiangyin NI1,2,3 |
1 School of Geographical Sciences, Fujian Normal University, Fuzhou 350117 (China)
2 Key Laboratory for Humid Subtropical Eco-Geographical Processes of the Ministry of Education, Fujian Normal University, Fuzhou 350117 (China)
3 Fujian Sanming Forest Ecosystem National Observation and Research Station, Sanming 365002 (China) |
| ABSTRACT |
| Climate warming has intensified the global hydrological cycle, amplifying the differences in precipitation and soil moisture between arid and humid areas. Such a change under regional drought may alter nitrogen (N) and phosphorus (P) releases during litter decomposition in terrestrial ecosystems, but how these biogeochemical processes respond to drought differently between arid and humid areas remains unclear. Here, we compiled 259 and 138 paired observations (with and without drought conditions) to assess the global variations in the drought effects on N and P releases during litter decomposition between arid (aridity index < 0.5) and humid (aridity index > 0.5) areas. Litter N release increased under drought in both arid (0.35%) and humid (3.62%) areas, and P release decreased by 7.32% in arid areas but increased by 2.22% in humid areas under drought. These changes in N and P releases from decomposing litter were positively correlated with drought duration in arid areas, dependent on microclimate, edaphic factors, and litter quality. Our findings highlight the contrasting effects of drought on litter N and P releases between arid and humid ecosystems, and this differential influence will greatly improve our capability to evaluate and forecast nutrient cycling during litter decomposition under different precipitation patterns. |
| Key Words: climate change,drought duration,edaphic factor,litter decomposition,nutrient release |
| Citation: Jiang Y Y, Wu F Z, Wu Q X, Wu S Q, Zhu J J, Ni X Y. 2025. Drought effects on nitrogen and phosphorus releases from litter vary between arid and humid areas: A meta-analysis. Pedosphere. 35(1): 182-192. |
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