| Science and Technology Transmission is an activity based on transmitting scientific and technical information. It plays a very important role in accelerating the scientific and technical innovation, improving economic development and promoting national strength. However, there are still some obvious and potential problems, which impact science and technology Transmission for sustainable and healthy development in our country. According to the characteristic of the science and technology transmission, in this paper, the ecology theory is led into science and technology transmission area, the deeper research is also carried on the science and technology transmission ecosystem and its health. In This paper, following work is mainly completed.First, Proposes the science and technology transmission ecosystem concept:science and technology transmission ecosystem is the homeostasis system which exists in a certain period and space, between all kinds of science and technology transmission ecology subject and external environment, it can be action and dependence each other, possess certain structural feature and implement certain function through science and technology information flowing and science and technology knowledge circulation. Its structure is just like a tower, and sets up a three dimensions four sides spatial structure model of science and technology transmission ecosystem, which constituted by the following parts:the sci-tech information transmission Regulator as the spire, the sci-tech information Maker, Disseminator and Receiver represent tower foundation, protective cover is represented by relevant laws and regulations, economic foundation and social culture. The paper also summarizes mainly feature of the science and technology transmission ecosystem and compared with the natural ecosystem.Second, proposes the concept of the sci-tech transmission ecosystem health. It is considered that during working and development of the ecosystem, it forms the reasonable components and the stable construction, and then, realizes a benign cycle of substances and energy between ecological substances and environment. Its specific manifestation is that it has ability for keeping working and the whole function of itself. In this paper, ecological features of the sci-tech transmission healthy ecosystem are discussed and its evaluation and regulation are also proposed on basis.Third, according to the structure and function of the sci-tech transmission ecosystem, based on ecological subject, ecological environment and eco-function, the paper constructs the evaluation index system of the sci-tech transmission ecosystem health which includes three target levels,9 criteria levels and 24 indication levels. And based on the character of research problems, the paper chooses multi-levels fuzzy integration evaluation model, and separately institutes the evaluation standard of quantitative index and qualitative index on basis.Fourth, guided by the basic theory of sci-tech transmission ecosystem and its health evaluation system, the paper makes the demonstration appraisal about health status of sci-tech transmission ecosystem through the way of quantitative analysis and qualitative evaluation. The final conclusion is that:the evaluation score of sci-tech transmission ecosystem is 60.488 which although on the healthy states overall still but only 0.488 away from the gap of the warning line to transform into sub-health state. Actually, a series of fundamental questions are not been solved. In view of the current condition of sci-tech transmission ecosystem, the pertinence suggestion for sci-tech information maker, communicator, audience, regulators, and relevant regulating countermeasures for the overall eco-system control are proposed.
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