武汉市绿色基础设施山体枢纽绿量研究

发布时间：2018-05-20 23:24

  本文选题：绿量 + 枢纽　； 参考：《华中农业大学》2013年硕士论文

【摘要】：随着社会的发展,城市化进程的加快,环境问题日益突出,人们越来越重视生态安全问题,绿色基础设施规划作为一种精明增长和精明保护的途径被提出,它能够对我们的规划、景观以及环境的保护提供更加科学的可持续的发展方法。大型的山体斑块是武汉市城市绿色基础设施中的绿色源泉,是绿色基础设施中重要的枢纽,也是城市生态安全的重要保障。三维绿量同二维绿量相比,其能够更加合理的反应山体绿量的生态效益。因此,以三维绿量为切入点研究武汉市山体枢纽的绿量,对更好的发挥山体在武汉市生态安全的保障作用具有重要意义。本研究以三维绿量为切入点,构建评价体系筛选出能够作为武汉市绿色基础设施枢纽的山体,并根据山体位置划分不同研究区域。通过构建植被指数(Ⅵ)和实测叶面积指数(LAI)之间的回归模型,反演出研究区的叶面积指数,研究分析枢纽区域、枢纽内山体及枢纽缓冲区的绿量特征,得到以下研究结果：(1)基于TM5影像提取的各植被指数(Ⅵ)和叶面积指数(LAI)相关性排序为：RVINDVIMSAVIGNDVIDVI PVI,相关性都达到0.6以上。(2)基于TM5影像各植被指数(Ⅵ)和叶面积指数(LAI)反演研究,得出最佳回归模型为比值植被指数(RVI)的三次多项式回归模型：LAI=0.012RVI3-0.20RVI2+2.061RVI-0.508。判定系数R2达到0.726。(3)武汉市市域各种土地利用类型绿量贡献大小排序为：农田山体绿地丘陵消涨带。各种土地利用类型的平均LAI大小排名为：丘陵山体农田绿地=消涨带。(4)建立了评价体系,筛选出可以作为基础设施枢纽的山体,共65座(连接性较好的计为1座),并根据地理位置划分为5片4带5点共14个枢纽区域。(5)推算出枢纽内山体、枢纽区域和枢纽区域的200m,500m,1000m缓冲区域的总绿量和单位面积绿量,根据不同缓冲区的变化推测出枢纽绿量的延伸性。
[Abstract]:With the development of society and the acceleration of urbanization, environmental problems become more and more prominent. People pay more and more attention to ecological security. Green infrastructure planning has been put forward as a way of smart growth and shrewd protection. It can provide a more scientific and sustainable development approach to our planning, landscape and environmental protection. The large mountain patch is the green source of the urban green infrastructure in Wuhan, is an important hub of the green infrastructure, and is also an important guarantee of urban ecological security. Compared with two-dimensional green quantity, three-dimensional green quantity can reflect the ecological benefit of mountain green quantity more reasonably. Therefore, it is of great significance to study the green quantity of mountain hinge in Wuhan City by using three-dimensional green quantity as the starting point to play a better role in ensuring the ecological security of Wuhan City. In this study, the three dimensional green quantity is taken as the breakthrough point, and the evaluation system is constructed to screen out the mountain body which can be used as the green infrastructure hub in Wuhan, and divide different research areas according to the mountain body location. Based on the regression model between vegetation index (鈪，

本文编号：1916703