| 基于Landsat 8数据的植被覆盖度动态变化监测及生态质量指数提升对策分析——以泰州市海陵区为例 |
| Dynamic Change Monitoring of Vegetation Coverage Based on Landsat 8 Remote Sensing Image and the Analysis on Countermeasures for Improving the Ecological Quality Index:A Case Study of Hailing District,Taizhou City |
| 投稿时间：2023-02-27 修订日期：2023-05-18 |
| DOI：10.19316/j.issn.1002-6002.2024.04.28 |
| 中文关键词: 海陵区 生态质量指数 植被覆盖度 归一化植被指数 像元二分模型 |
| 英文关键词:Hailing District ecological quality index vegetation coverage normalized difference vegetation index dimidiate pixel model |
| 基金项目:江苏省环保科研课题(2019010) |
| 作者 | 单位 | | 朱希希 | 江苏省泰州环境监测中心, 江苏省土壤有机污染物监测重点实验室, 江苏 泰州 225300 | | 侯玉婧* | 中国环境监测总站, 国家环境保护环境监测质量控制重点实验室, 北京 100012 | | 张宗祥 | 江苏省泰州环境监测中心, 江苏省土壤有机污染物监测重点实验室, 江苏 泰州 225300 | | 黄辉 | 江苏省泰州环境监测中心, 江苏省土壤有机污染物监测重点实验室, 江苏 泰州 225300 | | 王树祥 | 江苏省泰州环境监测中心, 江苏省土壤有机污染物监测重点实验室, 江苏 泰州 225300 | | 田慧 | 江苏省泰州环境监测中心, 江苏省土壤有机污染物监测重点实验室, 江苏 泰州 225300 |
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| 通讯作者:侯玉婧* 中国环境监测总站, 国家环境保护环境监测质量控制重点实验室, 北京 100012 |
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| 中文摘要: |
| 选取2013年、2017年和2021年覆盖泰州市海陵区范围的Landsat 8陆地成像仪(OLI)影像数据,采用归一化植被指数(NDVI)像元二分模型估算植被覆盖度,并基于转移矩阵对泰州市海陵区2013—2021年植被覆盖度的时空分布特征进行统计分析,同时对与其相关的建成区绿地率指数、建成区公园绿地可达指数等进行模拟测算分析。研究发现,建成区绿地面积、公园面积与建成区绿地率指数、公园绿地可达指数及生态质量指数(EQI)呈正相关,且绿地类型、公园形状、公园分散度等均会对指数测算结果产生不同影响。植被覆盖度监测结果表明,海陵区植被覆盖度明显下降的地块主要位于其边缘带,而植被覆盖度显著上升的地块则零星分散于海陵区各区域,说明海陵区在城市开发建设过程中兼顾了对绿色生态空间的拓展。 |
| 英文摘要: |
| The Landsat 8 OLI image data covering Hailing District of Taizhou in 2013,2017 and 2021 were selected and combined with normalized difference vegetation index (NDVI) dimidiate pixel model to estimate vegetation coverage. Based on the transfer matrix,the temporal and spatial distribution characteristics of vegetation coverage in Hailing District from 2013 to 2021 were statistically analyzed. In the meantime, the green space rate index and the park accessibility index in the built-up area were simulated and analyzed. It was found that the park and green space area in the built-up were positively correlated with the green space rate index,park accessibility index and ecological quality index (EQI), moreover,the type of green space,the shape of the park and the dispersion would have different effects on the index calculation results. The monitoring results of vegetation coverage showed that the plots with significantly decreased vegetation coverage in Hailing District were located in its marginal zone,while the plots with significantly increased vegetation coverage were scattered in various areas of Hailing District, indicating that the government was still giving consideration to the expansion of the green and ecological space in the process of urban development and construction. |
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