At last, some factors affecting the life cycle of Karst-cave tourist areas were analyzed, and some Suggestions about the development and management of Karst-cave tourist areas were put forward.
最后，分析了影响溶洞型旅游地生命周期的因素，并提出了溶洞型旅游地开发、经营的若干相关建议。
Based on the chemical kinetic theory and method, the carbon cycle in the karst system of the Jinan spring field is discussed in the paper.
本文采用化学动力学的基本原理和方法，对济南泉域岩溶系统碳循环进行研究。
Karst water in the strong runoff zone takes an active part in the modern water cycle, with an average residence time of 51 years, and so has a relatively strong renewable capacity.
强径流带内岩溶水积极参与现代水循环，平均滞留时间为51年，具有较强的更新能力。
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