基于像元二分模型的普洱市域绿色空间解译及分布特征探析

A Study on the Interpretation and Distribution Characteristics of Green Space in Pu'er City Based on Pixel Binary Model

摘要:

近年来城市化扩张迅速，绿色空间分布格局逐渐成为生物多样性保护和绿色空间规划研究的重点方向。以普洱市域为研究对象，基于空间分辨率10 m 的哨兵2 号遥感影像图数据，利用像元二分模型和归一化植被指数计算植被覆盖度，解译全域绿色空间分布格局。结果表明：普洱市绿色空间占全域国土空间总面积的61.93%，整体上绿色空间质量较好，分布范围密且广；但存在因城市化扩张引起的生态问题，思茅区和墨江哈尼族自治县最明显，受人类干扰较为严重，绿色空间分布较为破碎，继而对生物多样性构成一定的威胁。最后提出建设口袋公园、生态廊道等方式来增加动植物的生存空间及迁徙通道。

Abstract:

In recent years, the study of green space distribution patterns has gradually become akey area of focus in biodiversity conservation and green space planning amidst the rapidexpansion of urbanization. This paper keeps up with the forefront of the discipline, takingthe urban area of Pu'er City as the research subject. Based on Sentinel-2 remote sensingimage data with a spatial resolution of 10 meters, it utilizes the pixel dichotomy modeland normalized difference vegetation index to calculate vegetation coverage and interpretthe distribution pattern of green spaces across the entire region. The results indicate thatgreen spaces in Pu'er City account for 61.93% of the total land area, and overall, the qualityof green spaces is good, with a dense and extensive distribution. However, there are alsoecological issues arising from urbanization expansion, especially in Simao District andMojiang Hani Autonomous County, which are severely impacted by human interference,resulting in fragmented green space distribution and posing a certain threat to biodiversity.In the next step, measures such as constructing pocket parks and ecological corridors canbe taken to increase the living space and migration pathways for flora and fauna.