Accelerate as what the city changes a course, urban population density is increasing ceaselessly, land profit also is adding ceaselessly with intensity, the city gives birth to vegetation to be destroyed basically to danger formerly, artificial greenbelt is occupied, the phenomenon that be destroyed happens from time to tome. The article falls in this one setting, analysed the relationship of greenbelt and urban ecosystem, discussed the zoology function of urban greenbelt system, aim to apply the principle of landscape ecology, establish greenbelt system is in the position in urban landscape, the urban construction that changes for characteristic offers significant proposal.
The ecology that １ city greenbelt builds is academic
１ . １ city ecosystem
Well-known, ecosystem is by generator, consumer and analyst 3 big functions kind group and the system of a function that is not composition of biology composition place. In urban ecosystem, generator and analyst institute hold proportion very small already, its most outstanding characteristic is population- - consumer is replaced or restricted other use floral development, accordingly it is the ecosystem with a not complete, very strong dependence, the primary producer inside the system- - greenery, the mankind needs for his and cultivate, although cannot serve as nurture basically already to pledge the place that lay a person is used, but its position in urban ecosystem nots allow to ignore however, it still has powerful zoology function. The ego that is urban ecosystem adjusts the action with a service move.
１ . 2 greenbelt and urban ecosystem
As 20 centuries since the reforming and opening of 80 time, development of our country city is rapidder and rapidder, urban population amount rises quickly also. In most urban development process, original urban vegetation (former unripe vegetation, farm vegetation) be destroyed basically, although new artificial vegetation area also is increasing, but urban afforest rate hesitates to press forward however, decrease even. Brought so a series of environmental problem, the vigilance that causes people and think: Does greenbelt lie in urban ecosystem what kind of position? What contribution does greenbelt have to urban ecosystem? How to optimize greenbelt the scale in urban land and configuration? String 6
According to the theory of landscape ecology, landscape is comprised by landscape element, landscape element points to the relatively coessential zoology element on the ground or unit. Landscape element has 3 kinds of kinds, namely: Section (spot piece) , gallery and background. Section is the upper section of the form is not a line that differs apparently with surroundings on an outer view. Gallery points to the long and narrow region that is different from two side background, can regard form of a line or zonal section. Background is the setting district in landscape. In urban landscape, as a result of building or the cover an area of an area to had exceeded other landscape gross area that build thing, and 3 standards that accord with judgement background, so, be in in inside the dimensional limits of measure, can mix the building build content to regard as the background of urban landscape, and wait for greenbelt, surface regard as its section will consider. Greenbelt regards a city as the section that introduces in landscape or gallery, it is the habitat of other animal in urban ecosystem or migratory passageway, also filter to the move since urban environment and foil action. We will discuss urban greenbelt is how to be what the city serves and its equitable space distribution.
Previous12 3 4 Next