| The forest as a nature resource plays important ecosystem service functions in people's survival and daily life. Assessment of nature resource is a foreland topic, since there is no breakthrough in China and other countries. The currency measurement valuation of forest ecosystem service functions is a favorable attempt for assessment of forest resource. Few researches in this aspect have been done and most of the measure valuation scales are in a wide range. The advanced technologies such as GIS have been applied so scarcely that valuation results cannot consistent with the facts. There is also no enough data to support the outcome, which subsequently leads to the ecosystem service functions assessment could not be included in domestic economic assessment system entirely.Some information of forest resource and space environment in Tiantong forest park could be acquired rapidly and accurately by the advanced technologies such as GIS. GIS of forest ecosystem service functions valuation was established by combining some measured and investigated information with other aided data. On the platform of GIS, the model of measurement valuation was built up and the calculation method of ecosystem service functions as well as compensation fee was studied both on economic, ecological and social aspects after analyzing the background of forest resource in Tiantong. Estimation model and basic GIS database were connected and visible interface was developed by using the database and GIS programming language. The ecosystem service functions value and the amount of compensation fee were calculated in Tiantong. Further more, utilizing the abilities of strong spatial analysis, data management of GIS and visibility technologies of computer, the investigation results could be extended to each area.The research will supply a scientific basis for the decision of administration, will provide methods, techniques and data supports for assessment of ecosystem service functions in the future, and will lay the foundation for realizing the digital forest.The results were as follow:(1) The paper evaluated the amount of valuation, currency and compensation fee of the Tiantong forest ecosystem service functions in Ningbo. The results indicated that the values of incorporeal products were the same as the values of real products in Tiantong. And assessing the whole forest ecosystem service functions value should include economic value, ecological value and social value.(2) Utilizing the abilities of strong spatial analysis and data management of GIS, the paper put the results of valuation and compensation fee on each sub-compartment which supplied the data for the managers.(3) In assessing models, the paper supplied "effective area coefficient" and "market transform coefficient" in order to make the results approach to the market values.(4) Though the analysis of results and GIS, the conclusions were:1) In Tiantong, the amount of total valuation was 21.9626 billion yuan, the amount of currency was 10.7180 billion yuan, and the amount of compensation fee was 3.0009 billion yuan. At present the amount of the compensation fee was much lower than total valuation of ecosystem service functions.2) There were great differences between the values of various ecosystem service functions. Economic value was 5.5414 billion yuan, ecological value was 3.2467 billion yuan, and social value was 1.9299 billion yuan.3) There were great differences between the values of various ecological service functions. The values of forest water resource and air improved function played a master role in the ecological value which accounted for 96% of the total.4) The forest ecosystem service functions valuation were adherent to the forest resource obviously. The space distribution of forest resource controlled that of forest ecosystem service functions valuation.
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