深圳市景观指数的粒度效应分析及指数时空动态研究

发布时间：2018-05-14 03:38

本文选题：景观指数 + 粒度效应　；参考：《武汉大学》2017年硕士论文

【摘要】：景观指数是土地利用景观生态学相关研究中的重要方法,也是众多土地利用评价中的重要指标,但其受空间粒度的影响巨大。对景观指数粒度效应的分析,有利于对土地利用进行更科学的分析及研究。本文选择处于快速城市化地区的深圳市为研究区,在GIS的支持下,将深圳市土地利用空间数据按照不同粒度,分别划分为l0m×10m,20m×20m,30m×30m,40m×40m,50m×50m,60m×60m,70m×70m,80m×80 m,90m×90m,l00m×100m等间隔的十组数据,选取7组不同层次上的景观指数,并利用景观指数分析软件Fragstats4.2计算不同粒度的景观指数,在此基础上通过尺度域分析和信息损失评价,确定了深圳市土地利用景观指数的适宜粒度区间。最后,以确定的最佳粒度对深圳市2009-2013年期间景观形状指数(LSI)、集合度(AI)、香农多样性指数(SHDI)和香农均匀度指数(SHEI)进行了时空动态研究,分析了深圳市快速城市化进程对土地利用的影响。研究结果表明:(1)选取的景观指数都具有非常明显的粒度响应,且指数的数值随粒度呈现出以下变化趋势:斑块个数、周长、景观形状指数、聚集度等景观指数随着粒度的增加而有着不同程度的下降;面积比例、香农多样性指数和香农均匀度指数随着粒度的增加围绕某一个值上下波动。(2)基于尺度域分析和和信息损失评价,确定了深圳市土地利用景观指数的适宜粒度区间为30-40m。(3)利用最佳粒度对深圳市2009-2013年的数据进行景观指数计算,可以看出深圳市在这五年期间,随着城市化水平的不断提高,建设用地面积大大增加,自然景观面积大大减少。这对于深圳市的生态景观具有深远的影响。
[Abstract]:Landscape index is an important method in the study of land use landscape ecology. It is also an important index in many land use evaluation, but it is greatly affected by spatial granularity. The analysis of the granularity effect of landscape index is beneficial to more scientific analysis and research on land use. In this paper, with the support of GIS, the spatial data of land use in Shenzhen are divided into 10 groups of data of 10m 脳 10m 脳 10m 脳 20m 脳 30m 脳 30m ~ 40m 脳 40m 脳 50m 脳 50m 脳 50m 脳 50m 脳 60m 脳 60m 脳 60m 脳 70m 80m 脳 80m 脳 80m 脳 90ml00m 脳 100m with the support of GIS. Seven groups of landscape indices at different levels were selected, and the landscape indices of different granularity were calculated by using the landscape index analysis software Fragstats4.2. On this basis, the scale domain analysis and information loss evaluation were carried out. The suitable granularity range of land use landscape index in Shenzhen was determined. Finally, the spatial and temporal dynamics of landscape shape index (LSI), assemblage index (AI), Shannon diversity index (SHDI) and Shannon evenness index (SHEI) for the period 2009-2013 in Shenzhen were studied with the best granularity. The influence of rapid urbanization on land use in Shenzhen was analyzed. The results show that the landscape index selected by 1) has a very obvious granularity response, and the value of the index shows the following trends: patch number, perimeter, landscape shape index, the number of patches, and the landscape shape index. The landscape index such as aggregation degree decreased with the increase of granularity. Shannon diversity index and Shannon evenness index fluctuate up and down around a certain value with the increase of particle size.) based on scale domain analysis and information loss evaluation, Shannon diversity index and Shannon evenness index fluctuate around a certain value. The suitable granularity range of land use landscape index in Shenzhen was determined to be 30-40 m.f3) the landscape index of Shenzhen from 2009 to 2013 was calculated by using the best granularity. It can be seen that the level of urbanization in Shenzhen is increasing continuously during these five years. Construction land area greatly increased, natural landscape area greatly reduced. This has a profound impact on the ecological landscape of Shenzhen.
【学位授予单位】：武汉大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P901;F301.2

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