In this paper, highway-related human activities are defined as well as the human activities related to highway for keeping a normal production and livelihood. They include highway research, highway education, highway ...In this paper, highway-related human activities are defined as well as the human activities related to highway for keeping a normal production and livelihood. They include highway research, highway education, highway legislation, administration of justice of highway case and enforce the law, assessment, planning, design, construction and management, decision-making of highway projects. Therefore, highway-related human activities are not equal to construction of highway projects.展开更多
Seeking water and earning their livelihoods is the natural selection of human beings.Like other rivers on the earth,the Yangtze River is the birthplace of human civilization and survival.As an ecosystem,the Yangtze Ri...Seeking water and earning their livelihoods is the natural selection of human beings.Like other rivers on the earth,the Yangtze River is the birthplace of human civilization and survival.As an ecosystem,the Yangtze River Basin is evolving under the influences of natural factors and human activities.Because of soil erosion,pollution and human activities,the imbalance of secondary environment is exacerbated and the ecological environment has become more vulnerable,so it is urgent to mitigate and prevent the ecological crisis.The practice has proved that implementation of engineering measures is an effective way to improve the ecological environment.The Three Gorges Project (TGP) has a flood control storage capacity of 22.15 billion m 3,effectively storing the flood water upstream of Yichang,and protects 15 million people and 1.5 million hm 2 farmland.Furthermore,the project can prevent or slow down the sedimentation and shrinkage of the lakes in the middle Yangtze River such as Dongting Lake;with an average annual power generation of about 90 billion kW· h,it can significantly reduce the emissions of harmful gas like CO 2.In general,the construction of TGP is conducive to the ecological and environmental protection in the Yangtze River Basin and China,even the world.展开更多
基金Acknowledgement： This project was financially supported by Hunan Provincial Natural Science Foundation of China （No. 09JJ6065） and Engineering Research Center of Road Disaster Prevention and Transportation Safety of Ministry of Education （No. k0080306）.
文摘In this paper, highway-related human activities are defined as well as the human activities related to highway for keeping a normal production and livelihood. They include highway research, highway education, highway legislation, administration of justice of highway case and enforce the law, assessment, planning, design, construction and management, decision-making of highway projects. Therefore, highway-related human activities are not equal to construction of highway projects.
文摘Seeking water and earning their livelihoods is the natural selection of human beings.Like other rivers on the earth,the Yangtze River is the birthplace of human civilization and survival.As an ecosystem,the Yangtze River Basin is evolving under the influences of natural factors and human activities.Because of soil erosion,pollution and human activities,the imbalance of secondary environment is exacerbated and the ecological environment has become more vulnerable,so it is urgent to mitigate and prevent the ecological crisis.The practice has proved that implementation of engineering measures is an effective way to improve the ecological environment.The Three Gorges Project (TGP) has a flood control storage capacity of 22.15 billion m 3,effectively storing the flood water upstream of Yichang,and protects 15 million people and 1.5 million hm 2 farmland.Furthermore,the project can prevent or slow down the sedimentation and shrinkage of the lakes in the middle Yangtze River such as Dongting Lake;with an average annual power generation of about 90 billion kW· h,it can significantly reduce the emissions of harmful gas like CO 2.In general,the construction of TGP is conducive to the ecological and environmental protection in the Yangtze River Basin and China,even the world.
