长沙市中心城区绿地景观格局分析
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摘要
以长沙市中心城区利用2018年4月的哨兵-2B(Sentinel-2B)卫星10m分辨率遥感影像为数据源,利用RS和GIS技术,运用景观生态学原理,对长沙市中心城区绿地系统景观结构和景观格局进行了定量分析。结果表明:长沙市中心城区存在绿地斑块数量多,但分布极不平衡,以附属绿地占绝对优势;绿地斑块破碎度大,且旧城区破碎度较高,而绿地类型上尤以附属绿地破碎化最严重;绿地景观多样性较低,且分布不平衡;整体绿地景观斑块空间形状较规则缺乏自然形状,人工痕迹较重,复杂性不够。根据这些分析结果,提出了以下建议:增加大型绿地类型斑块数量,如公园绿地及风景名胜区等生态效益较好的绿地类型;通过建设公园绿地以及绿色廊道,构建网络结构,降低绿地斑块的破碎度,如防护绿地成链,附属绿地成片等;增强各类绿地斑块的自然性和复杂性,特别是附属绿地类型等。
Taking the 10-meter resolution remote sensing image of sentinel-2b satellite in April 2018 as the data source in the central urban area of changsha, Use RS and GIS technologies, based on the principle of landscape ecology, the landscape structure and landscape pattern of green space system in central urban area of changsha city were analyzed quantitatively. The results show that: The central urban area of changsha has a large number of green patches, but the distribution is extremely uneven, the subsidiary green space occupies the absolute advantage; The fragmentation degree of green patches is large and that of old urban areas is high, and the fragmentation degree of green patches is the most serious in the type of green patches;The diversity of green landscape is low and the distribution is unbalanced; The patch spatial shape of the whole green landscape lacks natural shape, the artificial trace is heavy and the complexity is not enough. According to the analysis results, the following suggestions are proposed:Increase the number of patches of large green space types, such as park green space and scenic area, which have better ecological benefits; By building parkland and green corridors, network construction, to reduce the fragmentation degree of green patch, such as protective green space into chains, attached green space into pieces; Enhance the nature and complexity of various patches of green space, especially the type of attached green space.
Taking the 10-meter resolution remote sensing image of sentinel-2b satellite in April 2018 as the data source in the central urban area of changsha, Use RS and GIS technologies, based on the principle of landscape ecology, the landscape structure and landscape pattern of green space system in central urban area of changsha city were analyzed quantitatively. The results show that: The central urban area of changsha has a large number of green patches, but the distribution is extremely uneven, the subsidiary green space occupies the absolute advantage; The fragmentation degree of green patches is large and that of old urban areas is high, and the fragmentation degree of green patches is the most serious in the type of green patches;The diversity of green landscape is low and the distribution is unbalanced; The patch spatial shape of the whole green landscape lacks natural shape, the artificial trace is heavy and the complexity is not enough. According to the analysis results, the following suggestions are proposed:Increase the number of patches of large green space types, such as park green space and scenic area, which have better ecological benefits; By building parkland and green corridors, network construction, to reduce the fragmentation degree of green patch, such as protective green space into chains, attached green space into pieces; Enhance the nature and complexity of various patches of green space, especially the type of attached green space.
引文
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[3]国务院关于长沙市城市总体规划的批复国函[2014]45号[EB/OL].http://www.gov.cn/zhengce/content/2014-04/18/content_8769.htm.
[4]长沙市人民政府网[EB/OL].http://www.changsha.gov.cn/zjcs/kncs/dlwz/.
[5]欧洲“哨兵-2A”环境监测卫星成功入轨人民网[EB/OL].http://world.people.com.cn/n/2015/0623/c157278-27194226.html.
[6]买提托合提·买提萨依木,阿里木江·卡斯木.喀什市绿地景观格局分析[J].遥感信息,2016,31(03):130-135+162.
[7]邬建国.景观生态学[M]北京:高等教育出版社,207(04):106-107.
[8]王志泰,王志杰,包玉.基于GIS的铜仁市城市绿地系统景观格局分析[J].甘肃农业大学学报,2011,46(01):110-114+126.
[9]付晓.基于GIS的北京城市公园绿地景观格局分析[J].北京联合大学学报(自然科学版),2006(02):80-84.
[10]车生泉,宋永昌.上海城市公园绿地景观格局分析[J].上海交通大学学报(农业科学版),2002(04):322-327.
[11]王亮.崇明东部土地利用变化及景观格局分析[J].国土与自然资源研究,2011(02):19-21.
[12]陈永生,徐小牛.基于RS和GIS的合肥市城市绿地景观空间结构的分析评价[J].东北林业大学学报,2012,40(03):62-66.