The last part: The problems existing of Dahe Website.
第四部分：大河网目前存在的问题与对策。
Based upon the investigation on the geological features of the Dahe deposit and its host rocks, this paper discusses the environment and origin of the ore deposit.
本文在讨论大河矿床容矿岩石、矿床地质特征的基础上，探讨了矿床的形成环境和成因。
Taking the green system planning of Dahe towns green system as an example, this paper discussed the way of small towns green system planning with the theory of ecology.
以大河镇绿地系统规划为案例，探讨应用生态学基本原理进行小城镇绿地系统规划的思路。
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