Regional coupled C-N-H2O cycle processes and associated driving mechanisms |
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Authors: | Gao Yang Yu Gui-rui |
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Institution: | 1.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China ;2.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China ; |
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Abstract: | From a molecular level to an ecosystem scale, different coupling mechanisms take place during coupled carbonnitrogen-water(C-N-H_2O) cycle, of which essential are water flux and related biogeochemical processes through physicochemical reactions associated with terrestrial and aquatic ecosystems. Meanwhile, regional coupled C-N-H_2O cycle will subsequently impact regional gross primary productivity(GPP) and C and N exchanges during air-water interactions that occur downstream of watersheds. This study aimed to first synthetically analyze the regional dynamics of C, N and H_2O cycles in ecosystems and determine their interactional relationships; second, to specify regional C-N-H_2O coupled relationships of ecosystems and their theoretical ecological principles; third, to classify coupled regional response and adaptation of the C-N-H_2O cycle to climatic and environmental changes under anthropogenic activities, providing a theoretical basis to fully understand and make adjustments to interactional C, N and H_2O cycling relationships at different ecosystem scales and under associated coupling processes. |
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