In China the eco-environment problems are derived from the external economies and normal institutional defects and some other natural disasters.
我国生态环境问题主要是由于生产的外部不经济、正式制度安排的缺陷和各种灾害造成的。
The eco-environment construction of Haiyuan county exists such problems as resource waste, imperfect system arrangement and insufficient carrying capacity of natural environment.
海原县生态建设存在着资源浪费、某些制度安排缺陷、自然环境承载力不足等问题。
The problems of eco-environment of Shiyang valley are serious. The main factors of them are high pressure of population to environment and irrational utilization of water resources and so on.
石羊河流域生态环境存在着严重的问题，主要是由于人口对生态环境的压力过大、水资源利用不当等因素引起的；
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