| 一个计算平均土壤呼吸速率和土壤碳密度的简单模型 |
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| 作者姓名： | 杨昕 王明星 |
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| 作者单位： | 中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室, 北京 100029 |
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| 基金项目： | 中国科学院“百人计划”及大气物理所创新基金 8 2 30 2资助项目 |
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| 摘 要： | 根据大量实测的土壤碳密度资料并结合生产力模型,得到一组直接利用气候资料来计算平均土壤呼吸速率和土壤碳密度的公式,并同实测资料进行了对比.根据此模型的模拟结果,对最近基于观测资料而得出的平均土壤呼吸速率对温度变化的响应并不显著的结论提出了质疑.利用此模型还对全球潜在的土壤碳密度分布做了模拟,计算出全球土壤碳库为1152Pg.该模型成功地模拟了土壤碳密度随降水 (或湿度 )状况而变化的特征.
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| 关 键 词： | 平均土壤呼吸速率 土壤碳密度 土壤碳库 气候资料 模型 |
| 收稿时间： | 2001-05-11 |
A Simple Model in Calculating Average Soil Respiration Rate and Soil Carbon Density |
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| Authors: | Yang Xin Wang Mingxing |
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| Institution: | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | Based on observed soil carbon density data over wold wide and model results of net primary production, a simple model was built that can be used directly in calculating average soil respiration rate and soil carbon density. The simulated results have been compared with measurements. According to our model results, the recently view that averaged soil respiration rate does not vary with temperature is under debatable. Using this model, we simulate the distribution of potential soil carbon density on global scale,the calculated global soil organic carbon pool is 1152 Pg. This simple model can successfully simulate the large differences of soil carbon density at different precipitation (or soil moisture) situations. |
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| Keywords: | average soil respiration rate soil caron density carbon pool climate data model |
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