This paper focuses on the historical transition of human being's activities and the eco-environment in the upper reaches of Minjiang River. The history is divided into 4 periods, each with its own feature. During ...This paper focuses on the historical transition of human being's activities and the eco-environment in the upper reaches of Minjiang River. The history is divided into 4 periods, each with its own feature. During the period of nomad immigration, the top-line of the subalpine forest was forced downward by the expanding subalpine meadow. During the period of farming nationality immigration, the bottom-line of middle mountain forest had moved upward forced by the needs for land or timber of the increasing population in the valley basia During the period of the early exploiting, the focus resource was the timber. The total output was limited, comparing with the later period, because of the bad accessibility. But it was large enough to impact the forest ecosystem of the deforesting area. The recent 50 years is the crucial period of economic development and eco-environment degradation. This paper points out that the impact of human being's activities for environment lies on 3 factors: 1) physical features control the location and tendency eco-environmental change; 2) population and productivity control the scale and speed of eco-environmental change; 3) regional accessibility controls the time and location of eco-environmental change.展开更多
Reporter: How to appraises the Chinese exhibition industry market? Jime Essink :The Chinese exhibition market will experience a fast growth in the coming years. This will mainly be the result of an increase of interna...Reporter: How to appraises the Chinese exhibition industry market? Jime Essink :The Chinese exhibition market will experience a fast growth in the coming years. This will mainly be the result of an increase of international visitors展开更多
This article. with the analysis of the crucial factors of system function. and from the view point of the system principles, clarifies the essential ideas of the social system design process and puts forth a targetfun...This article. with the analysis of the crucial factors of system function. and from the view point of the system principles, clarifies the essential ideas of the social system design process and puts forth a targetfunctionconducted system design procedure. Accordingly, the problems in China's reform and enterprise's system design are analyzed展开更多
基金Supported by the Knowledge Innovative program of Chinese Academy of Sciences(KSCX1-07-03)
文摘This paper focuses on the historical transition of human being's activities and the eco-environment in the upper reaches of Minjiang River. The history is divided into 4 periods, each with its own feature. During the period of nomad immigration, the top-line of the subalpine forest was forced downward by the expanding subalpine meadow. During the period of farming nationality immigration, the bottom-line of middle mountain forest had moved upward forced by the needs for land or timber of the increasing population in the valley basia During the period of the early exploiting, the focus resource was the timber. The total output was limited, comparing with the later period, because of the bad accessibility. But it was large enough to impact the forest ecosystem of the deforesting area. The recent 50 years is the crucial period of economic development and eco-environment degradation. This paper points out that the impact of human being's activities for environment lies on 3 factors: 1) physical features control the location and tendency eco-environmental change; 2) population and productivity control the scale and speed of eco-environmental change; 3) regional accessibility controls the time and location of eco-environmental change.
文摘Reporter: How to appraises the Chinese exhibition industry market? Jime Essink :The Chinese exhibition market will experience a fast growth in the coming years. This will mainly be the result of an increase of international visitors
文摘This article. with the analysis of the crucial factors of system function. and from the view point of the system principles, clarifies the essential ideas of the social system design process and puts forth a targetfunctionconducted system design procedure. Accordingly, the problems in China's reform and enterprise's system design are analyzed
