中尼交通廊道植被覆盖度数据集（1992-2022）

中尼交通廊道植被覆盖度数据集，包括中尼交通廊道两侧各2公里范围的植被覆盖度栅格。数据为Tif格式，时间分辨率为季（按1-3月、4-6月、7-9月、10-12月分四个季度），空间分辨率为250米。加工方法：①根据LandsatTM/ETM+/OLI影像的红光和近红外光计算得到NDVI；②通过像元二分法公式FVC=（NDVI-NDVImin）/（NDVImax-NDVImin），计算得到植被覆盖度；③取一个季度内多期植被覆盖度平均值，并重采样到250米。

Vegetation Coverage Dataset of China-Nepal Transportation Corridor
This dataset contains vegetation coverage rasters within a 2-kilometer-wide buffer zone on both sides of the China-Nepal Transportation Corridor. The data is stored in Tif format, with a quarterly temporal resolution divided into four standard quarters: January–March, April–June, July–September, and October–December, and a spatial resolution of 250 meters. The data processing procedures are as follows:
① Calculate the Normalized Difference Vegetation Index (NDVI) using the red and near-infrared bands of Landsat TM/ETM+/OLI images;
② Derive vegetation coverage via the dimidiate pixel model formula: FVC = (NDVI - NDVImin) / (NDVImax - NDVImin);
③ Compute the average value of multi-temporal vegetation coverage within each quarter, and resample the processed data to a spatial resolution of 250 meters.

搜集汇总

背景与挑战

背景概述

该数据集提供了1992年至2022年中尼交通廊道两侧各2公里范围的植被覆盖度数据，时间分辨率为季度，空间分辨率为250米，基于Landsat影像计算NDVI并通过像元二分法得到植被覆盖度。数据以Tif格式存储，适用于专业地理信息系统软件分析使用。