介绍了流域水利工程建设、农业生产及城市化对河流生态系统的影响。
The human being activities' impacts on the riverine ecosystem, mainly including water resource's project, agriculture and urbanization is reviewed.
生态农业是个庞大复杂的工程。
Ecological agriculture is a vast and complex engineering project.
这些巨大的工程农业技术项目能直接达到恢复自然生态环境，能实现直接改善背景气候条件的目的。所以它们对人类社会和自然界的意义十分深远。
All the huge projects can directly restore the natural ecological environment and improve the background climate conditions, so they are of great importance to the human society and the nature.
这些巨大的工程农业技术项目能直接达到恢复自然生态环境，能实现直接改善背景气候条件的目的。所以它们对人类社会和自然界的意义十分深远。
All the huge projects can directly restore the natural ecological environment and improve the background climate conditions, so they are of great importance to the human society and the nature.
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