DENG Xuechun,ZHANG Lyushui,LIU Chunqing.Taking Nanchang Center District as an Example to Analyze the Vegetation Coverage and Landscape Pattern of Urban Green Space[J].Northern Horticulture,2021,(12):70-78.[doi:10.11937/bfyy.20203809]
以南昌市中心城区为例分析城市绿地植被覆盖度及景观格局
- Title:
- Taking Nanchang Center District as an Example to Analyze the Vegetation Coverage and Landscape Pattern of Urban Green Space
- 文献标志码:
- A
- 摘要:
- 使用RS和GIS技术进行归一化植被指数(NDVI)的提取,以Sentinel-2A的遥感数据组建南昌市中心城区绿地景观数据集,应用景观生态学的原理定量研究研究区绿地景观格局并探讨不同类型及区域城市植被覆盖度和绿地景观格局的相关性。结果表明:研究区绿地斑块构成总数庞大,其中经济开发区的绿地率最高而东湖区最小,附属绿地相对其它类型绿地占比最大;绿地分布不均匀且总体绿地斑块边缘较规则,遭受严重的人为因素干扰;旧城区尤以附属绿地和广场用地破碎化水平较大,无法发挥其生态效益;高植被覆盖度有利于形成面积较大、形状趋于复杂、空间分布相对集中的景观斑块,植被覆盖度越高,破碎化水平越低。对分析结果提出规划建议,均衡各类型绿地分布,增加景观多样性;结合城市文脉,改造旧城环境面貌;充分利用原有生态资源,合理化开发。
- Abstract:
- Using RS and GIS technology to extract the normalized vegetation index (NDVI),and using Sentinel-2A remote sensing data to construct the Nanchang city center green space landscape data set,apply the principles of landscape ecology to quantitatively study the green space landscape pattern of the study area and discuss the correlation between different types and regions of urban vegetation coverage and green landscape patterns.The results showed that the total number of green patches in the study area was huge.Among them,the economic development zone had the highest green rate and the Donghu area was the smallest.The subsidiary green land accounts for the largest proportion of other types of green land greespace;the green land was unevenly distributed and the overall green patch edges were relatively regular.Severe human-made interference;the old urban area,especially the subsidiary greenspace and square land greenspace,had a relatively large fragmentation level and cannot exert its ecological benefits;high vegetation coverage was conducive to the formation of large areas,complex shapes,and relatively concentrated spatial distribution.Block,the higher the vegetation coverage,the lower the fragmentation level.Propose planning suggestions to the analysis results balance the distribution of various types of green space and increase landscape diversity;combine the urban context to transform the old city environment;make full use of the original ecological resources and rationalize development.
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备注/Memo
第一作者简介:邓雪纯(1995-),女,硕士研究生,研究方向为风景园林历史与理论、绿地系统规划。E-mail:294756158@qq.com.责任作者:刘纯青(1974-),女,博士,教授,博士生导师,现主要从事风景园林历史与理论、城市绿地系统规划等研究工作。E-mail:515189191@qq.com.基金项目:国家自然科学基金资助项目(31660231);国家自然科学基金资助项目(5196080626);江西省高校人文社会科学研究资助项目(JC19118);江西省研究生创新专项资金资助项目(YC2019-S183)。收稿日期:2020-09-04