A 2001–2015 Archive of Fractional Cover of Photosynthetic and Non-Photosynthetic Vegetation for Beijing and Tianjin Sandstorm Source Region

Data

卷:2

Bo Wu¹  Bin Sun²  Zhihai Gao²  Zengyuan Li²  Xiaosong Li³  Hongyan Wang³  Cuicui Ji³ 

[1] Institute of Desertification Research, Chinese Academy of Forestry, Beijing 100091, China;

[2] Institute of Forest Resources Information Technique, Chinese Academy of Forestry, Beijing 100091, China;

[3] Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China;

关键词: non-photosynthetic vegetation;    land degradation surveillance;    linear spectral mixture model;    endmember;    MODIS NBAR;   

DOI  :  10.3390/data2030027

来源: DOAJ

【 摘 要 】

Fractional covers of photosynthetic and non-photosynthetic vegetation are key indicators for land degradation surveillance in the dryland of China. However, there are no available, well validated, and multispectral-based products. Aiming for this, we selected the Beijing and Tianjin Sandstorm Source Region as the study area, and utilized the linear spectral mixture model for generating the fractional cover of PV, NPV, and bare soil, with endmember spectra retrieved from the field measured endmember spectral library, based on the MODIS NBAR data from 2001 to 2015. The unmixing results were validated through comparison with the field samples. The results show the method adopted could acquire rational and accurate estimation of fractional cover of photosynthetic vegetation (R2 = 0.6297, RMSE = 0.2443) and non-photosynthetic vegetation (R2 = 0.3747, RMSE = 0.2568). The dataset could provide key data support for the users in land degradation surveillance fields.

【 授权许可】

Unknown