Analysis of Tree Canopy Cover in Built-up Srea of Huize County, Yunnan Province Based on eCognition Image Interpretation

doi:10.13466/j.cnki.lyzygl.2022.04.013

Abstract

Abstract:

Urban ecological construction is an effective way to solve the environmental deterioration caused by the urbanization process,forest canopy coverage is a landmark index to measure urban ecology and reflect the effectiveness of forest city construction,the analysis results of forest canopy coverage can provide reference for the forest city construction of small and medium-sized cities in southwest China.Based on the 0.5m resolution aerial remote sensing images in the built-up area of Huize County from July to August 2019,and the ArcGIS10.4 platform,the canopy coverage and patch distribution of trees in the built-up area of Huize County were calculated and analyzed by using eCognition 9.0 software interpretation and multi-scale segmentation algorithm processing.The results showed that the actual canopy coverage of trees in the built-up area of Huize County was 275.55hm²,which gradually spread from the urban center to the surrounding areas,showing an increasing trend,and the canopy coverage rate of trees was 17.78%.There were 5 270 patches in total,and the overall urban forest was small in area but big in number,with serious fragmentation.The potential forest canopy coverage was 8.98%,with a total of 2 067 patches,and the theoretical value of the maximum forest canopy coverage that could be achieved was only 26.76%.The patch distribution of new and old residential areas was significantly different,and the construction of urban forest played a positive role in promoting the improvement of urban ecology.

Key words: urban forest, tree canopy cover, eCognition, Huize county built-up area

CLC Number:

S731.2

HE Xiaofei, CHEN Xin, WANG Mengyao, MIAO Xue, FAN Changmeng, PENG Jiansong. Analysis of Tree Canopy Cover in Built-up Srea of Huize County, Yunnan Province Based on eCognition Image Interpretation[J]. FOREST RESOURCES WANAGEMENT, 2022, 0(4): 100-108.

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References 22

[1]	高美蓉, 贾宝全, 王成, 等. 厦门市中心区城市森林树冠覆盖及潜力分析[J]. 东北林业大学学报, 2013, 41(9):76-79.
[2]	LY/T2004-2012,国家森林城市评价指标[S]. 2012.
[3]	Ram Pandit, Maksym Polyakov, Rohan Sadler. Valuing public and private urban tree canopy cover[J]. Australian Journal of Agricultural and Resource Economics. 2014, 58(3):453-470. doi: 10.1111/1467-8489.12037
[4]	Thomas W G, John D G, Luis Aguilar, et al. Predicting tree species richness in urban forests[J]. Urban Ecosystems, 2017(20):839-849.
[5]	贾宝全, 仇宽彪. 北京市第二道绿化隔离区林木树冠覆盖特征与景观格局变化[J]. 林业科学, 2019, 55(2):13-21.
[6]	汤婧雅, 吴泽民. 上海浦西建成区城市森林树冠覆盖特点及格局[J]. 中国城市林业, 2013, 11(3):1-4.
[7]	朱耀军, 王成, 贾宝全, 等. 广州市主城区树冠覆盖景观格局梯度[J]. 生态学报, 2011, 31(20):5910-5917.
[8]	孙晓莉, 袁磊, 赵然, 等. 基于地统计与空间自相关的山区草地资源空间分布格局及变化特征分析[J]. 西南农业学报, 2020, 33(3):590-598.
[9]	山成栋. 会泽铅锌矿富锗闪锌矿的沉淀机制研究[D]. 北京: 中国地质大学, 2020.
[10]	贾宝全, 王成, 邱尔发, 等. 城市林木树冠覆盖研究进展[J]. 生态学报, 2013, 33(1):23-32.
[11]	姚佳, 贾宝全, 王成, 等. 北京的北部城市森林树冠覆盖特征[J]. 东北林业大学学报, 2015, 43(10):46-50.
[12]	贾宝全, 张文, 李晓婷, 等. 北京城市潜在林木树冠覆盖的区域分布、动态变化与评价研究[J]. 生态学报, 2020, 40(3):874-887.
[13]	孙晓莉, 赵然, 和万荣, 等. 基于Logistic回归模型的会泽县草地资源变化及驱动力分析[J]. 西南农业学报, 2021, 34(6):1309-1315.
[14]	Wu Zeming, Huang Chenglin, Wu Wenyou, et al. Urban forest structure in Hefei,China[J/OL]. Springer Ser Environ Manag, 2008:279-292.(2008-01-01) [2022-04-07] https://link.springer.com/chapter/10.1007/978-0-387-71425-7_17.
[15]	刘秀萍, 贾宝全. 北京城区居住区树冠覆盖变化特征[J]. 林业科学, 2019, 55(12):12-20.
[16]	吴后建, 但新球, 程红, 等. 中国国家森林城市发展现状存在问题和发展对策[J]. 林业资源管理, 2017(5):14-19.
[17]	GB/T37342-2019,国家森林城市评价指标[S]. 2019
[18]	宋宜昊. 基于易康软件平台下的北京城区林木树冠覆盖解译与检验[D]. 北京: 中国林业科学研究院, 2016.
[19]	刘秀萍, 贾宝全. 北京城区居住区树冠覆盖变化特征[J]. 林业科学, 2019, 55(12):12-20.
[20]	Mincey S K, Schmitt-Harsh M, Thurau R. Zoning,land use,and urban tree canopy cover:The importance of scale[J]. Urban Forestry & Urban Greening, 2013, 12(2):191-199.
[21]	陈璐, 周剑云, 戚冬瑾. 霍普金斯规划行为理论评述——兼论规划制定和使用[J/OL]. 国际城市规划,1-16.(2012-12-05)[2022-04-02]. https://doi.org/10.19830/j.upi.2021.411.
[22]	朱坤, 代继平, 彭建松, 等. 腾冲市建成区树冠覆盖及其树种多样性分析[J]. 西北林学院学报, 2022(2):1-9.

序号	分类项
1	树冠覆盖
2	农用地(耕地、菜地、塑料大棚)
3	裸土地(建设裸土地、其他裸土地、荒地)
4	不透水面(道路、建筑)
5	水体(人工水体、河流、湖泊)

斑块类型	斑块数量/ 个	斑块数量占比/%	斑块面积/ hm²	斑块面积占比/%
小斑块	4464	84.71	154.30	56.04
中斑块	784	14.88	112.60	40.86
大斑块	20	0.38	7.28	2.60
特大斑块	2	0.03	1.37	0.50

斑块类型	斑块数量/ 个	斑块数量占比/%	斑块面积/ hm²	斑块面积占比/%
小斑块	1438	95.29	35.21	78.17
中斑块	71	4.70	9.83	21.83

斑块类型	斑块数量/ 个	斑块数量占比/%	斑块面积/ hm²	斑块面积占比/%
小斑块	967	46.78	24.30	17.46
中斑块	1050	50.80	101.89	73.22
大斑块	50	2.42	12.97	9.30

居住区类型	居住区数量/个
新建居住区	41
老居住区	51