The environmental water demand is considered for scientific disposition and management and ecologic equilibrium.
必须合理预留生态环境需水，以实现水资源的科学配置和有效管理，维持生态平衡。
In this paper, a theory of non-equilibrium thermodynamics is applied to the ecologic system offorest in zone of deep seasonal frozen soil on Mt. Maxian.
本文采用非平衡态热力学理论，研究兰州马衔山深季节冻土区的森林生态系统，从研究森林演替入手得出生态环境演变的规律。
The paper discusses the water demand volume for ecologic system equilibrium including the minimum water demand volume for water living things in lake and river;
文章探讨了维持生态系统平衡所需的水量，包括河湖水生生物生存的最小需水量；
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