武汉市绿色基础设施的连接廊道绿量研究

发布时间：2018-06-19 01:17

本文选题：绿量 + 叶面积指数　；参考：《华中农业大学》2013年硕士论文

【摘要】：城市绿地具有改善城市生态环境、参与城市物质能量循环与更新等方面具有及其重要的生态作用。绿色基础设施采用对外土地保护与对内部开放空间网络进行鉴定、保护和长期管理相结合办法为城市绿地保护提出战略性的保护对策。本文引入绿色基础设施的概念,对武汉市的绿色基础设施进行判定,利用遥感影像提取研究区域植被信息,并提取绿色基础设施连接廊道,对其进行绿量的估算,分析研究区总体绿量分布,连接廊道网络分布及其绿量特征。主要研究内容与结论如下：(1)对调查样方的实测群落LAI值与利用ETM遥感影像的提取的植被指数进行回归分析,得到拟合度较好的RVI与LAI最有拟合回归方程模型,y=-0.508+2.061 x-0.207x2+0.012x3(R2=0.726)(2)研究区总体面积约为8588.3km2,绿量总值211.85×108m2绿化覆盖区域LAI值为3.547,研究区内单位面积绿量值为2.467。其中农田区域面积4205.937km2,山体、丘陵等其他绿化覆盖面为1766.94 km2,水域面积总值为1583.06km2,城市建设用地占地1032.43km2,研究区内农田为主要绿量覆盖区域。研究区内绿量等级分布以低绿量区域占主导地位,整体绿量水平较低。(3)研究区绿色基础设施绿色廊道面积为35.89×108m2,绿量总值为130.64×108m2,LAI均值3.641。分析连接廊道内不同组分绿量特征,得到丘陵LAI山体LAI城市绿地LAI农田LAI滨水绿带LAI。而连接廊道的各个绿地类型中以农田面积最大,山体其次,然后依次为城市绿地、丘陵和滨水绿带。(4)比较不同组分类型的绿量等级特征,比较各类型不同等级绿量区域的比例面积和绿量值比例,确定在连接廊道中的5个绿地类型中,绿量水平较高的是丘陵和山体,农田区域和滨水绿带内的绿量水平处于中下水平,而城市绿地内的绿量水平最低。(5)提取典型的廊道20条,对每一条廊道的LAI均值、最大值、最小值以及不同绿量等级的LAI值、面积和绿量进行分析。1号东湖-蛇山廊道、2号府河廊道和9号青龙山白云洞山体廊道LAI均值较高,绿量水平较好。(6)分析不同圈层的到城市绿色基础设施连接廊道分布与城市建设用地增长呈现相反关联,城市三环内绿色廊道面积占市域廊道面积比例为1.16%,三环至外环圈层廊道面积占市域廊道面积比例为15.47%,外环至市域区域占市域廊道面积比例为83.37%。不同圈层呈现跨越式增加,有外环至内环随着城市建设强度增加,廊道面积和绿量急剧缩减。(7)针对研究区域的绿色基础设施连接廊道绿量分布和存在的问题提出总体绿量格局的优化策略,同时对三环线内城市主城区、三环线至外环线城乡交错带和外环至市域的城郊农村三大城市发展区提出绿量分布优化模式。
[Abstract]:Urban green space plays an important ecological role in improving urban ecological environment and participating in urban material and energy cycle and renewal. Green infrastructure uses external land protection and internal open space network identification, protection and long-term management of the combination of measures for the urban green space protection strategic protection countermeasures. In this paper, the concept of green infrastructure is introduced to judge the green infrastructure in Wuhan. The vegetation information is extracted from the remote sensing image, and the green infrastructure is extracted to connect the corridor to estimate the green quantity. The distribution of total green quantity, the distribution of connecting corridor network and the characteristics of green quantity in the study area are analyzed. The main contents and conclusions are as follows: (1) regression analysis was carried out between the measured Lai values of community and the vegetation index extracted from ETM remote sensing images. The best fitting regression equation model was RVI- 0.508 2.061 x-0.207x2 0.012x3r20.26km2) the total area of the study area was about 8588.3km2, the total green value of the green area was 211.85 脳 108m2 was 3.547, and the green value per unit area of the study area was 2.467. The area of farmland is 4205.937km2, the cover of other greening such as mountains and hills is 1766.94 km2, the total area of water area is 1583.06km2, the area of urban construction land is 1032.43km2, and the farmland in the study area is the main green cover area. The distribution of green quantity grade in the study area is dominated by the low green quantity area, and the overall green quantity level is relatively low. The green corridor area of green infrastructure in the study area is 35.89 脳 10 ~ 8m ~ 2, and the total green volume value is 130.64 脳 10 ~ 8m ~ 2 Lai mean 3.641. Based on the analysis of the green quantity characteristics of different components in the connecting corridor, the Lai green zone of the Lai urban green land in the hilly Lai mountain area was obtained in the Lai waterfront green zone of the hilly area. Among the types of green land connected with corridor, farmland is the largest, mountain is the second, followed by urban green space, hilly and waterfront green belt. 4) the green quantity grade characteristics of different components are compared. By comparing the proportion area and green value ratio of different types of green areas with different grades, it was determined that among the five greenbelt types connected with corridors, the higher green volume level was in hills and mountains. The green level in farmland area and waterfront green belt is in the middle and lower level, while the green quantity level in urban green space is the lowest. (5) 20 typical corridors are extracted, and the Lai mean, maximum, minimum value and different green grade Lai value of each corridor are obtained. The area and green quantity were analyzed. The Lai mean value of No. 1 East Lake -Snake Hill Corridor, No. 2 Fu River Corridor and No. 9 Qinglong Mountain Baiyun Dong Mountain Corridor was higher. The green quantity level is better. (6) the distribution of green infrastructure connecting corridor in different circles is inversely related to the urban construction land growth. The proportion of green corridor area to urban corridor area is 1.16, the proportion of green corridor area to outer ring corridor area is 15.47, and the proportion of outer ring to city area is 83.37. The levels of different circles are increasing by leaps and bounds, with the intensity of urban construction increasing from the outer ring to the inner ring. Corridor area and green quantity decrease sharply. 7) aiming at the green distribution and existing problems of green infrastructure connecting corridor in the study area, the optimization strategy of the overall green quantity pattern is put forward. At the same time, the main urban area within the third ring line is also studied. The optimal model of green quantity distribution is put forward in the three urban and rural urban development areas from the third ring line to the outer ring line in the urban-rural interlaced zone and from the outer ring to the city area.
【学位授予单位】：华中农业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU985.2

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