中文摘要：

碳循环及全球变暖已成为影响气候变化、人类生存环境和经济共同发展和安全的重大问题，引起了全球科学、政治、外交政策等部门的重视。本文着重探讨碳循环的由来、生态系统与碳循环的科学相关、在碳循环方面，中国需要解决的问题和科学技术方法以及碳循环系统的科学研究方法和改进等问题。

英文摘要：

In recently years, the study on carbon cycle has been given rise to by sciences, politics ,and government etc. It also can be recognized as an important issues which have influence on global human living environment,climate changes and economic development in the global scales. Understanding the complexity of the carbon cycle and the linkages to physical,biogeochemical and ecological processes and human influences requires a comprehensive research strategy and a new level of scientific and programmatic integration. In this paper, the carbon cycle issues, the relationship between ecosystem and carbon cycle, and some development methods and technological studies have been discussed. It is necessary to study the carbon cycle and its impacting on the climate change and human living environment in future.