Responses of gross primary productivity to different sizes of precipitation events in a temperate grassland ecosystem in Inner Mongolia, China
| Autor: | Zhongmin Hu, Wei Zhao, Linghao Li, Xiaomin Sun, Shenggong Li, Naishen Liang, Guirui Yu, Wen-ming Bai, Qun Guo |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Steppe Global warming Climate change Context (language use) Management Monitoring Policy and Law 010603 evolutionary biology 01 natural sciences Grassland Productivity (ecology) Climatology Temperate climate Environmental science Precipitation Physical geography 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Arid Land. 8:36-46 |
| ISSN: | 2194-7783 1674-6767 |
| DOI: | 10.1007/s40333-015-0136-7 |
| Popis: | Changes in the sizes of precipitation events in the context of global climate change may have profound impacts on ecosystem productivity in arid and semiarid grasslands. However, we still have little knowledge about to what extent grassland productivity will respond to an individual precipitation event. In this study, we quantified the duration, the maximum, and the time-integrated amount of the response of daily gross primary productivity (GPP) to an individual precipitation event and their variations with different sizes of precipitation events in a typical temperate steppe in Inner Mongolia, China. Results showed that the duration of GPP-response (τR) and the maximum absolute GPP-response (GPPmax) increased linearly with the sizes of precipitation events (Pes), driving a corresponding increase in time-integrated amount of the GPP-response (GPPtotal) because variations of GPPtotal were largely explained by τR and GPPmax. The relative contributions of these two parameters to GPPtotal were strongly Pes-dependent. The GPPmax contributed more to the variations of GPPtotal when Pes was relatively small ( |
| Databáze: | OpenAIRE |
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