Evaluation Of Farmland Shelterbelt Ecological Service Function In Northern Jiangsu

For a long time, people only care about the value of tangible products from farmland shelterbelt, while ignore that of intangible products, such as cycle of nutrients cleanse circumstance. Therefoe there are great significances to study the struction and function for the farmland shelterbelt of xinyi. Not only can improve people's understanding of farmland shelterbelt, also provides the theory basis for building farmland shelterbelt scientifically.This paper takes farmland shelterbelt of Xinyi as the research object, then according to the concept, types and characteristics of farmland shelterbelt; this paper analyzes the essence of farmland shelterbelt, fully lays out its functions, and combines the current situation of poplar farmland shelterbelt, the assessment indicator system of the farmland shelterbelt ecological service function was put forward. The main researches are as followed:(1) The calculation result of the farmland shelterbelt ecosystem service values in Xinyi was 0.736 billion Yuan per year, the value of fast-growing and high-yield plantation solidify carbon was 0.209 billion Yuan per year; the value of fast-growing and high-yield plantation oxygen released function was 0.1749 billion Yuan per year; the value of fast-growing and high-yield plantation cleanse circumstance was 0.0244 billion Yuan per year; the value of fast-growing and high-yield plantation rising consumption heat function was 0.1545 billion Yuan per year; the value of fast-growing and high-yield plantation farmland forest increase crops production was 0.1305 billion Yuan per year; the value of fast-growing and high-yield plantation nutrient accumulation was 0.0424 billion Yuan per year. But the value of poplar wood in farmland shelterbelt of Xinyi was only 0.5685 billion Yuan, much smaller than its ecological value.(2) Farmland shelterbelt can be divided into three stand types:large sapling forest, half-mature forest and mature forest. Count respectively its various ecosystem service values and carry out an accumulation. This can guarantee the veracity of various ecosystem service values results, and also easy to contrast different forest types of poplar farmland shelterbelts.(3) Based on the current situation and data of farmland shelterbelt of Xinyi, this paper studies and selects the evaluation and the economic value calculation method of individual ecological service function physical quantity.