一个计算平均土壤呼吸速率和土壤碳密度的简单模型

被引:12
作者
杨昕
王明星
机构
[1] 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,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
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;
D O I
暂无
中图分类号
S153.6 [土壤成分];
学科分类号
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1 1 5 2Pg .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 .
引用
收藏
页码:90 / 96
页数:7
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