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森林中的粗木质残体(CWD)是生物圈与土壤圈养分配置的中介和纽带,CWD的贮量影响森林中元素的循环。文中通过比较世界各气候带森林系统中CWD的贮量,总结了造成各气候带森林中CWD贮量差异的气候因素。各气候带不同的气温、降水以及气温与降水的时间搭配关系,通过影响森林木材生产力、活立木死亡量及CWD的分解速率,进而影响CWD在林内的贮量。热带雨林、季雨林中CWD的平均贮量最低,仅为19.96~27.71 t/hm2;温带海洋性气候森林中CWD的平均贮量高达205.8~213.2 t/hm2。在全球变暖的大背景下,贮存在CWD中的C元素含量关乎着大气中CO2含量,故应加强世界各气候带森林中CWD贮量格局的长期监测和系统调研。
The coarse woody debris (CWD) in the forest is an intermediary and link between the biosphere and the soil nutrient allocation, and the CWD stock affects the circulation of elements in the forest. In this paper, we summarize the climatic factors that cause the differences of CWD reserves in different climatic zones by comparing the stock of CWD in the forest systems of different climatic zones in the world. The different temperatures, precipitation, and the timing of precipitation and temperature in each climatic zone affect the CWD storage in the forest by affecting forest timber productivity, standing wood mortality and CWD decomposition rate. The average CWD stocks in tropical rain forests and monsoon forests were the lowest, ranging from 19.96 to 27.71 t / hm2. The average CWD stocks in temperate maritime climate forests were as high as 205.8-213.2 t / hm2. In the context of global warming, the C element content stored in the CWD is related to atmospheric CO2 content, so long-term monitoring and systematic investigation of the CWD stock pattern in the world’s climatic zones should be strengthened.