2015年中国红树林空间分布数据

作者通过红树林常绿性特征、冠层特征和潮水淹没特征等生物物理指标、结合地形海拔和坡度因子以及与大海相连地理位置特征，融合光学卫星遥感和雷达卫星遥感数据，构建了红树林遥感分类算法。在2014年1月至2016年7月25个WRS-2条带共1941景 ETM /OLI光学影像和586景Sentinel-1A C波段雷达数据集基础上，利用该算法和统一参数阈值提取了2015年中国红树林空间分布数据。结果表明，2015年中国红树林总面积为20303 hm&sup2（未含冠层开阔的人工种植红树林），其中92%的分布在海南、广西和广东省。广东省的红树林面积最大，为8136 hm&sup2，其次是广西壮族自治区，总面积为6849 hm&sup2，海南为3667 hm&sup2。福建、台湾和香港的红树林面积均在500 hm&sup2左右，在澳门和浙江有少量的红树林存在。该数据集包括图像直接分类后的数据（MangroveChina2015_DC）和分类后经过校正的数据（MangroveChina2015_DC_Correction）。数据集存储为.shp和.kmz格式，压缩后数据量为2.67MB。

The authors developed a mangrove remote sensing classification algorithm by integrating biophysical indicators such as mangrove evergreenness, canopy characteristics and tidal inundation characteristics, topographic factors including elevation and slope, and geographic proximity to the ocean, while fusing optical and radar satellite remote sensing data. Based on 1941 ETM/OLI optical images and 586 Sentinel-1A C-band radar scenes from 25 WRS-2 strips acquired between January 2014 and July 2016, the authors extracted the 2015 spatial distribution data of mangroves in China using this algorithm and unified parameter thresholds. The results show that the total area of mangroves in China in 2015 was 20303 hm² (excluding artificially planted mangroves with open canopies), with 92% distributed in Hainan Province, Guangxi Zhuang Autonomous Region and Guangdong Province. Guangdong Province has the largest mangrove area, reaching 8136 hm², followed by Guangxi Zhuang Autonomous Region with 6849 hm², and Hainan Province with 3667 hm². The mangrove areas in Fujian Province, Taiwan Province and Hong Kong Special Administrative Region are all around 500 hm², with small amounts present in Macao Special Administrative Region and Zhejiang Province. This dataset includes two subsets: the directly classified image data (MangroveChina2015_DC) and the post-classification corrected data (MangroveChina2015_DC_Correction). The datasets are stored in .shp and .kmz formats, with a compressed size of 2.67 MB.

搜集汇总

背景与挑战

背景概述

该数据集为2015年中国红树林空间分布矢量数据，基于Landsat和Sentinel-1A遥感影像，通过整合常绿性、冠层密度、淹没频率等特征的新算法提取，空间分辨率为30米。数据显示2015年中国红树林总面积20,303公顷，其中92%分布在海南、广西和广东三省，广东省面积最大（8,136公顷），数据集包含直接分类和校正两个版本，以.shp和.kmz格式存储。