气候变化与土壤有机质的关系(英文)

在最近的地质历史中，气候变化的速率是史无前例的，它对地球生物圈产生了巨大的影响。土壤有机质中的碳是地球碳库的重要组成部分，它参与全球碳循环。土壤有机质分解而产生的CO2和CH4是重要的温室气体。土壤有机质对气候模型的反应较敏感；其总量取决于生物量生产与分解的平衡状态，以及土壤储存有机质的能力。就全球规模来说，土壤有机质沿着降水增加和温度下降的梯度而增加。温度是支配凋落物分解速率的重要环境因素，它甚至能改变凋落物分解的动力学。

CIimate Change in Relation to Soil Organic Matter

The rate of climate change could be unprecedented in the recent geologic history and have large effects on the terrestrial biosphere. The carbon in soil organic matter (SOM) is a significant component of the earth's carbon reservoirs, and participates in the global carbon circulation. The CO2 and CH4 produced by the decomposition of SOM are two important greenhouse gases. SOM is sensitive to climatic patterns. The total amount of SOM depends on the balance of biomass production and decomposition, and on the soil capacity for organic matter storage. At global scales, SOM increases along gradients of increasing precipitation and decreasing teluperature. Temperature is a well-established environmental factor governing litter decomposition rates, and even can alter litter decay dynamics.