弋阳县森林资源质量分析与评价

发布时间：2018-06-18 22:28

本文选题：森林资源质量 + 指标体系　；参考：《江西农业大学》2015年硕士论文

【摘要】：森林资源是林业赖以发展的物质基础,是构成地球生态系统的重要组成部分,掌握森林资源的数量和质量,可为林业部门进行林业建设决策、提高森林经营管理水平提供参考,对指导森林经营有着重要现实意义。本文以江西省弋阳县为研究对象,以森林可持续经营等理论为指导,基于2009年森林资源二类调查数据,构建森林资源质量评价指标体系,并对其森林资源质量进行评价,以找出制约其森林资源质量提高的限制因子及提出相应的对策和建议,主要研究结果及结论如下:(1)弋阳县森林覆盖率为59.40%。有林地面积为87 606.5 hm2,占林地面积的86.64%;天然林占较明显的优势,有林地中天然林占71.80%;林分蓄积占到活立木蓄积的91.06%,有林地单位面积蓄积量为41.6 m3.hm-2;林龄结构不合理,中幼龄林占乔木林分比重达到96.90%;生态公益林和商品林的比例接近1:1;主要林分类型为阔叶林和马尾松林,二者占林地面积的比重为66.78%。(2)构建了由森林生产力、森林结构、森林健康和森林稳定性4个约束层共13个评价指标组成的弋阳县森林资源质量综合评价指标体系。运用层次分析法确定了各指标权重,并运用综合指数法对弋阳县森林资源质量进行评价。评价结果表明:弋阳县森林资源质量指数为0.455,资源质量处于中等的等级;但病虫害发生率、火灾发生率和土壤腐殖质厚度3个指标处于差水平,是制约弋阳县森林资源质量进一步提高的限制因子。(3)提出了提高森林生产力、优化森林结构、改善森林健康和增强森林稳定性以提高森林资源质量的技术措施,并提出从不断深化林业改革、发展非公有制林业,加大政策支持力度、拓宽林业建设资金投入渠道,加强科技兴林、培养专业人才,坚持依法治林、加强森林资源保护的政策保障建议。
[Abstract]:Forest resources are the material basis of forestry development and an important part of the earth ecosystem. Mastering the quantity and quality of forest resources can provide a reference for forestry departments to make decisions on forestry construction and improve the level of forest management and management. For guiding forest management has important practical significance. This paper takes Yiyang County of Jiangxi Province as the research object, taking the theory of forest sustainable management as the guidance, and based on the second kind of investigation data of forest resources in 2009, constructs the evaluation index system of forest resources quality, and evaluates the forest resources quality. In order to find out the limiting factors restricting the improvement of forest resources quality and put forward the corresponding countermeasures and suggestions, the main results and conclusions are as follows: the forest coverage rate of Yiyang County is 59.40. The forestland area is 87 606.5 hm2, which accounts for 86.64% of the forestland area, the natural forest occupies obvious advantage, the natural forest occupies 71.80% of the forestland, the stand volume accounts for 91 06% of the living stand storage, and the forestland unit area accumulative capacity is 41.6 m3.hm-2. The forest age structure is unreasonable. The proportion of middle and young forest to tree stand reached 96.90; the proportion of ecological public welfare forest to commercial forest was close to 1: 1; the main forest types were broadleaved forest and Pinus massoniana forest, the proportion of them to forest area was 66.78. The comprehensive evaluation index system of forest resources quality in Yiyang county is composed of 13 indexes of forest health and forest stability. The weight of each index was determined by analytic hierarchy process (AHP) and the quality of forest resources in Yiyang county was evaluated by comprehensive index method. The results showed that the forest resource quality index of Yiyang County was 0.455, and the resource quality was in the middle grade, but the incidence of diseases and pests, the fire rate and the thickness of soil humus were at different levels. It is a limiting factor that restricts the further improvement of forest resource quality in Yiyang County. It puts forward some technical measures to improve forest productivity, optimize forest structure, improve forest health and enhance forest stability in order to improve forest resource quality. The paper also puts forward the following suggestions: deepening forestry reform, developing non-public forestry, increasing policy support, widening investment channels of forestry construction funds, strengthening science and technology to rejuvenate forests, training professional talents, and persisting in managing forests according to law. Suggestions on strengthening the policy guarantee of forest resources protection.
【学位授予单位】：江西农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S757;F326.27

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