Study On Services Efficiency Evaluation And Their Adjusting Mechanism Of Village Green Space System

To afford academic foundations for quantification evaluating, adjusting and optimizing the services efficiency of a village green space system(VGSS), a series of studies in Zhejiang province rural area were carried out on several key indices such as service efficiencies of different afforestation tree species, landscape pattern effects on thermal exchange, recreation service efficiency of village parks and greening landscape beauty to establish their evaluation models, reveal their influenced mechanism by the relational factors and find out their adjusting handles in this paper, the main results are as follows:Afforestation tree species, C. camphora as a CK, with obvious ecological benefit, has no advantages in aspects of aesthetic, recreational and economic value; fruit tree species have certain extent of ecological benefit which were enhanced while interplanted with soybean to construct fruit-soybean communities respectively, so they are very important material for village greening in many locations and occasions. It was the basic mechanism causing environment temperature reducing to make temperature-reducing patches and temperature-increasing patches fully tangent. The heat exchange amount is inversely proportional to the 4-6th power of the distance, the proportion of contribution to environment brightness temperature (EBT) from landscape quantity indices to from landscape structure indices was 3:1 in a village core area (built-up area), and the proportion of contribution from a inner core area to from outer environment was also 3:1. The service efficiencies of a village park or a village park system were mainly determined by 3 types of common factors, i.g. distance from the park to traditional gathering places, distance from the park to visitors'home and land and capital input, a medium and appropriate input will bring us the best service efficiencies. Among multitudinous elements influenced aesthetics value of the green landscape, the rustic tinge and building quantity are the special factors whose evaluation would be different by different people, others are universal factors. The evaluation are no significant different to integrative landscape among group of rural residents, urban residents and university students, but are quite different to urbanizing or rustic ones. Green quality causing beauty, the indices related to the green quality are the most important factors in aesthetics evaluation model.Based on the researches above, a integrated evaluation model for service efficiency of VGSS was worked out, problems about quantification and calculation of many key indices and problems about weight determination were successfully resolved.