Ecological Public Welfare Forest Xianju Services Assessment Study

Ecological Forest is to maintain and improve the ecological environment, protect the ecological balance, conserve ecological diversity of human society to meet the ecological, social needs and sustainable development as the main function, the main provider of welfare, social services, products or forest, trees and woodlands. This thesis is on how to carry out scientific assessment of forests ecosystem services. According to the Zhejiang Province public welfare forest ecological benefit monitor goal's whole request, take the Ecology, Forestry and the ecology theory as a criterion, constructs monitors take the fixed bottom class in kindergarten as the master line public welfare forest in county level monitor network system, the formulation public welfare forest county level monitor system construction technology standard and the forest ecological regime and the benefit evaluating indicator system, to composes, the structure, the energy cycle, the hydrologic cycle and the environment benefit by the public welfare forest community and so on carries on the monitor, the union province public welfare forest localization observation, the special investigation and so on, used methods of mathematical statistic and the model technology, analysised the the ecological service of public welfare forest resources in Xianju county. We have proposed the indicators and methods to monitor the forest, and monitor and evaluate the ecological benefit and functions of the eco-forest.The results shows that:(1)The forest ecosystem services in Xianju country was significantly.2004-2008 conserving water quantity 2.75×108t, to reduce soil erosion 865.24×104, absorption CO2240.12×104t, the release of O2175.32×104 t, a net increase of carbon storage capacity of 65.62×104 t, the net energy storage by 280.66×108 MJ.2004-2008, Xianju County Forest were worth 9.064 billion yuan ecological benefits. Where the largest water conservation benefit of 2.251 billion yuan (24.84%), and oxygen release efficiency of 1.753 billion yuan (19.34%), biodiversity conservation value of 1.625 billion yuan (17.93%), solid soil and fertility benefits of 995 million yuan (10.98%), forest tourism benefits of a total of 864 million yuan (9.53%), carbon sequestration benefits of 787 million yuan (8.69%), forest protection benefit a total of 317 million yuan (3.49%), biological value of 267 million new energy storage (2.95%), soil-effective minimum total of 205 million yuan (2.26%), service value of the order of the Water Conservation> release oxygen> Biodiversity Conservation> solid soil and fertility> Forest Tourism> carbon sequestration> Forest Protection> Bio new storage> improve the soil.(2) The Status of Forest in Xianju country①Coniferous forest area proportion is too large, while the unit of biomass, solid soil capacity, storing water and water quantity relatively high broad-leaved forest, mixed coniferous area ratio is still relatively small; in the age group structure, the young forest, old forest in a disproportionately large share, reaching a total area of 91.71%, the structure is unreasonable. Quality of Public Welfare's stand shows not ideal.②According to the growth of trees, the superficial characteristics of appearance and conduct comprehensive assessment of the affected forest health status, health Xianju Forest in the forest to reach 56.56 percent, while the sub-health to 43.44%. ③Total biomass of forests Xianju 459.48x104t, an increase of rate of 7.22%, the average biomass per unit area 94.51t/hm2.The forest community type, biomass is the largest broad-leaved forest, up to 215.09×104t, the total biomass of 46.81 percent forests, and other high to low followed by pine forest, mixed conifer, fir, Phyllostachys pubescens,shrub and mixed bamboo.Vertical structure of the tree layer biomass was> shrub layer> herb layer.④Forest is a typical increase in species diversity, species richness broad-leaved forest> coniferous mixed forest> coniferous forest (including pine forest> fir)> bamboo. Broad-leaved forest, mixed coniferous high species diversity, plant species composition is relatively rich, more complicated structures, communities and species biodiversity> families and genera of Diversity> Section species diversity. Judging from the vertical structure, species diversity and broad-leaved forest, mixed coniferous tree layer> shrub layer> herb layer, shrub layer and coniferous forest is the> tree layer> herb layer.(3)In the Xianju Forest ecosystem services evaluated in the study the establishment of a small class of constant monitoring of the main line of the Forest County monitoring network system, construction of forest ecological conditions and benefits of county-level evaluation index system of monitoring. Development of "long-term monitoring of forests fixed small class technical specifications" and in the region for the implementation and scientific, systematic, and operable to the province and even the nationwide county-level monitoring and evaluation of Public Welfare provides a model.