Study On Forest Ecosystem Services Of Daxing’ Anling Forest In Inner Mongolia

Forest ecosystems are the main terrestrial ecosystems, with water conservation, CO2fixation and O2generation, air purification. By the forest, permafrost, wetlands constitute the Daxing’anling forest ecosystems is Hulun Buir Prairie Songnen Plain and natural barriers. A full, systematic and objective research and evaluation of the functional areas of forest ecosystem services provide a scientific basis for ecological benefit compensation forests, but also extremely important practical significance for the implementation of natural forest protection project Daxing’anling.In this paper, Based on the analysis of Daxing’anling Forest Authority area of forest resources, select the dominant species, Using《Forest ecosystem observation of long-term positioning method》(LY/T1952-2011) conducted field survey data collection, according to the《Forest Ecosystem Services Assessment Standard》(LY/T1721-2008) to determine the evaluation index system, the forest ecosystem service of Daxing’anling forest in Inner Mongolia was evaluated by the method of material valuation. The research and evaluation results are as follows:(1) Choosed and identified Larix, birch, aspen, Mongolian oak, pine five dominant species as study.(2)Screening evaluation system by six indicator categories (water conservation, soil conservation, carbon sequestration and oxygen release, nutrient accumulation of substances, air purification, protection of biodiversity) and eleven indicators factors (regulation of water, water purification, carbon sequestration, release oxygen, solid soil, fertilizer, providing negative ions to absorb pollutants, dust removal, tree nutrition accumulation, species conservation) formed.(3) The total value of five dominant species forest ecosystem services is4.809X10" yuan/a. where water conservation is1.195×1011yuan/a; soil conservation and fertility maintenance is8.004×1010yuan/a; CO2fixation and O2generation is1.784×1011yuan/a; nutrients accumulation is2.151×1010yuan/a; air purification is5.072×1010yuan/a; Species Conservation is3.075×1010yuan/a. Magnitude of each order:CO2fixation and O2generation> Water Conservation> Soil Conservation and fertility maintenance> air purification> Species Conservation> nutrients accumulation.(4) From the perspective for various types of trees, Larix gmelini ecosystem services value to3.042×1011yuan/a; Betula platyphlla1.427×1011yuan/a; Populus davidiana1.617×1010yuan/a; Quercus mongolica1.027×1010yuan/a; Pinus sylvestris var. mongolica7.516X109yuan/a.The services values of different forest types are as follows:Larix gmelini>Betula platyphlla> Populus davidiana> Quercus mongolica>Pinus sylvestris var. mongolica.