Evaluation On The Ecological Service Value Of The Coastal Protection Forest Of Casuarina Equisetifolia In Fujian Province

Protection forest of Casuarina equisetifolia is one of the most important components of the protection forest system in the southeast coast of China, which can combat threaten from the ocean, and take good function in water conservation, regulate the climate, wind defending, water conservation, environmental enhancement and also keep balance of the ecosystem. There was already plenty of research on the ecological function of the protection forest of environmental enhancement, however, no index system and method of calculation aimed at coastal protection forest had been developed yet. No evaluation and analysis had been carried out in quantization perspective. To evaluate and quantify the ecological value of the protection forest of Casuarina equisetifolia can help to further recognize its value, and eventually help to improve the sustainable management significantly. The main research work listed as follows:(1) An evaluation index system was developed. The ecological service value of the protection forest of Casuarina equisetifolia can be divided into two parts, one is direct economic value and indirect economic value. The index system was comprised of the nine ecological services, and corresponding calculation method was given, too.(2) Method to calculate the ecological service value was determined. Distinguish different types of protection forest in both Ecological and Economics perspective. In this thesis, we took the ecological service value of the protection forest Casuarina equisetifolia as an example, method and indexes were selected. Ecosystem service value was obtained based on the data taken by fix by observation, cooperated with the data taken from the seventh National Forestry Survey. Dynamics of the forest productivity(3) Ecosystem service value of the coastal protection forest of Casuarina equisetifolia was evaluated quantitively. The result shows that the average annual shelter forests ecosystem services values of Fujian adds up to 510284.1×10~4 yuan, which consist of 4662.52×10~4 yuan of timber Value, accounts for 0.91%, 156556.8×10~4 yuan of carbon fixation and oxygen release, accounts for 30.68%, 3402.02×10~4 yuan of air purification, accounts for 0.67%, 319033.7×10~4 yuan of soil conservation, accounts for 62.52%, 26050×10~4 yuan of forest protection , accounts for5.10%, 489.26×10~4 yuan of water storage, accounts for 0.10%, 89.82×10~4 yuan of habitat provision, accounting for 0.01%.(4) The effective way of improving the ecosystem services of Casuarina equisetifolia protection forest was proposed. First, we must improve the coastal protection forest ecological compensation. Second, improve the structure and management of coastal shelterbelts, of which coastal protection forest spatial structure optimization was the key to enhance the ecosystem services. Construction of efficient coastal protection forest system is the foundation of improving ecosystem services and improving the coastal protection forest management techniques is the guarantee of improving ecosystem services. Third, monitoring and protection of coastal shelterbelts should be strengthened to enhance ecosystem services.Monitoring and evaluation of ecosystem services function was conducted to achieve forest ecological benefits of the quantitative calculation and currency-based assessment, and to evaluate the contribution and effects of forest ecological benefit to ecology, environment and economy. These will indicate the importance and role of the forest ecosystem, then enhance the attention of public on the forest and the environment and for greater government investment and support the community. In this study, the pioneering research work was made to assess the ecological value of Casuarina equisetifolia protection forest, and to carry out its accounting values. These will make the policy makers to deep the awareness of the forest resources values, to develop practical forest management plans, and ultimately make a reasonable decision. The theoretical and scientific basis will be developed to strengthen and enhance the construction of southeast coastal shelterbelt project.