全球变化下土壤功能演变的响应和反馈

土壤过程是陆地生态系统过程的重要组成部分，对全球变化有响应和反馈作用。概述了国内外全球变化下的土壤功能演变过程的研究进展。样带的生态学对比结合长期试验的联网研究成为区域尺度的重要研究方法，同时广泛应用稳定性碳氮同位素分析和区域模型方法，对土壤碳氮循环的人文和自然元素综合驱动进行定量研究。未来对全球变化下土壤过程的研究重点是集成社会经济和生物物理过程的研究，加强土地利用变化驱动的定量描述，综合研究土壤碳氮循环和水循环交互作用，建立区域尺度的土壤碳氮循环模型，预测全球变化下土壤功能的演变和反馈，提出调控策略和措施。

RESPONSE AND FEEDBACK OF SOIL FUNCTION EVOLVEMENT TO GLOBAL CHANGE

Soil process is one of the key processes of terrestrial ecosystem, which responds and feeds back to the global change. This paper reviews the latest achievements of the studies on soil functions and processes under global change. The transect researches combined with network of long-term experiments become important methods at regional scale. Besides, stable C and N isotope analysis and model methods are widely applied to quantify the effect of anthropic and natural factors on soil C and N cycling. The future research on soil process under global change will focus on integrating the studies of social-economical and bio-physical processes, quantifying the driving mechanism of land-use and land cover change, studying the interaction between soil C and N cycling and water cycling, building C and N models at regional scale, predicting the change of soil function and the feedback effect on climate change and finally putting forward the strategies and measures to manage the soil function under global change.