| Urban green space system plays key role in eco-city construction, in improving or maintaining urban ecological environment, enhancing comforttable and harmonious living environment quality. Landscape pattern analysis, ecological compensation capacity calculation and urban ecological green network system construction are the premise and foundation of scientific and reasonable urban green space planning and even the whole urban planning and construction.Based upon RS and GIS technology, landscape ecology and urban green space system planning theory, this research, taking Jinan City as an example, studies ecological compensation capabilities and the landscape pattern, and the stidy proposes a program for district administrative organization to strengthen compensation capacity of constructing greening space in Jinan City.1. Capacity of ecological compensationEcological compensation is measured for Huaiyin District, Tianqiao District, Lixia District, Shizhong District and Licheng District By using "green equivalent" method. The result showes that the green biomass of the direction of Jinan City is in ahigh level. But there is a apparent difference between each two administrative regions.For all districts, the two-dimensional green biomass of Lixia District is only 22.20m2 Per capita less than 25m2 Per capita, the bottom line of the normal life to urban people; the biomass figures in Shizhong District, Huaiyin District and Tianqiao District, are 151.12m2,116.63m and 255.1m2 respectively, all much higher than 25m2,the bottom line figure, which better meet the daily needs of residents. And Licheng District reaches 908.99 m2 Per capita, far exceeding 25m2 Per capita, normal life criterion.Thus, Licheng District, bears the highest green ecological compensation capacity.2.Landscape pattern analysis in Jinan CityAs follows are some characteristic of the internal green space systems and space distribution in built-up area of Jinan City:There exist landscape diversity and evenness in Huaiyin District and Tianqiao District but with high fragment index, thus in no landscape dominance. In contrast, landscape diversity and evenness in Lixia Distric and Shizhong District are of high dominance but with less fragment. Variety of fractal landscape dimension generally is at a lower level, all below 1.5 index, and regular landscape Patch shape as green landscape is, it appears regular and simple, which indicates extensive artificial interference.3. Green space system planning of Jinan City(1) Greening program is as follows in regard to ecological compensation capacity:The per capita two-dimensional green biomass(22.2m2) is below the minimum level(25m2), and 2.8m2 per capita need to be made up for, or lawn of 1610820.4m2 to be increased, or broad-leaved forest of 805410.2m2 requires to be produced, or alternative coniferous forest of 5369401.3m2 to be planted or shrubbery of 1073880.27m2 to be patched..(2) System construction of ecological green network in Jinan CityAn ring network of urban green space system will be formed with park as core, green belt as radial axis, municipal park as nodes, green belt around the city as junction, thus coming into being an urban ecological green system with one core, three rings six belts, seven galleries, seven areas, multi-wedges and multi-dotted model, So, Jinan will be a city with a combination of green system characteristic of radial-shaped, ring-shaped, centre-rounded, ring plus wedged ecological system.
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