保定市主城区公园绿地健康评价

发布时间：2018-05-21 09:57

本文选题：保定市 + 主城区　；参考：《河北农业大学》2015年硕士论文

【摘要】：本文以保定市主城区公园绿地为研究对象,对其绿地现状进行健康评价。借鉴森林健康评价的思想和方法,从活力、组织结构和土壤状况三个方面入手,构建了一套公园绿地健康评价指标体系,运用专家打分法与因子分析法确定参评因子的权重,建立评价模型,并对健康指数进行分级,从而对保定市主城区公园绿地的健康程度进行评价。研究结果如下:(1)针对保定市主城区的生态环境现状,构建了以该地区为代表的公园绿地健康评价指标体系。以保定市主城区绿地系统的稳定性和可持续性为目标,从活力、组织结构、土壤状况三个方面入手,构建了以植物生长势、病虫害程度、树木的胸径、树高、单位面积蓄积量、覆盖度、树种自然度、土壤PH及持水能力、土壤肥力为指标层的健康评价指标体系,并运用专家打分法和因子分析法确定了各个指标的权重。(2)通过建立城市公园绿地健康评价数学模型,将所有样方的数据输入评价模型,得出健康综合指数,结论如下:竞秀公园的绿地健康综合指数在4.39~7.69之间;植物园绿地的健康综合指数在0.00~5.68之间;东风公园的绿地健康综合指数在6.33~10.00之间;军校公园的绿地的健康综合指数在4.58~7.25之间。(3)结合健康指数的分级,将保定市公园绿地分为极不健康绿地、不健康绿地、亚健康绿地、健康绿地四类。通过计算结论如下:在总调查的12个样方中,极不健康绿地1个,占8.33%;不健康绿地1个,占8.33%;亚健康绿地8个,占66.67%;健康绿地2个,占16.67%。(4)从调查结果的一系列数据得出保定市主城区内公园绿地基本处于不健康状态与亚健康状态之间。针对非健康绿地,在公园绿地健康评价结果的基础上,找出参评指标中影响绿地健康状况的关键因素,主要为绿地中物种多样性、自然度(即乡土树种所占比重)、覆盖度、土壤含水率及土壤养分含量。针对这些影响因子提出相应的公园绿地的改善方案:针对物种多样性、自然度、覆盖度较低提出要补植增绿、提高乡土树种的利用率;针对土壤状况问题提出要加强绿地管理;针对景观效果差提出要加强管理并提高公园绿地景观规划设计水准。
[Abstract]:In this paper, the main urban park green space in Baoding City as the research object, the status of green space health evaluation. Using the thought and method of forest health assessment for reference, starting from three aspects of vigor, organization structure and soil condition, a set of evaluation index system of park green space health was constructed, and the weight of participating factors was determined by using expert scoring method and factor analysis method. The evaluation model was established and the health index was classified to evaluate the health degree of park green space in Baoding city. The results are as follows: (1) in view of the ecological environment of Baoding City, a health evaluation index system of park green space represented by this area is established. Aiming at the stability and sustainability of green space system in main urban area of Baoding city, the plant growth potential, the degree of disease and insect pests, the diameter of trees, the height of trees and the volume of accumulation per unit area were constructed from three aspects: vigor, organization structure and soil condition. The index system of health evaluation, including mulching degree, tree species naturalness, soil PH and water holding capacity, and soil fertility. The weight of each index is determined by using expert scoring method and factor analysis method. By establishing the mathematical model of urban park green space health evaluation, the data of all samples are input into the evaluation model, and the comprehensive health index is obtained. The conclusions are as follows: the comprehensive index of green space health of Jingxiu Park is 4.39 ~ 7.69, that of botanical garden is 0.005. 68, that of Dongfeng Park is 6.33 ~ 10.00; Combined with the classification of health index, Baoding park green space was divided into four categories: extremely unhealthy green space, sub-healthy green space and healthy green space. The calculated results are as follows: of the 12 sample squares surveyed, one is extremely unhealthy greenbelt (8.33), one unhealthy greenbelt (8.33), eight sub-healthy greenbelts (66.67th), two healthy green spaces, one unhealthy greenbelt, eight sub-healthy greenbelts, and two healthy greenbelts. From a series of data from the survey results, it is concluded that the park green space in Baoding City is basically between unhealthy state and sub-health state. Based on the results of the health evaluation of green space in the park, the key factors affecting the health status of green space were found out. The main factors were species diversity, naturalness (that is, proportion of native tree species, coverage degree) in green space. Soil moisture content and soil nutrient content. Aiming at these influencing factors, the paper puts forward the corresponding improvement schemes of park green space: aiming at species diversity, naturalness and low coverage, it puts forward to supplement planting to increase green, to improve the utilization ratio of native tree species, and to strengthen green space management in view of soil condition. In view of the poor landscape effect, it is proposed to strengthen the management and improve the level of landscape planning and design of the park green space.
【学位授予单位】：河北农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU986

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