气候和人类活动对黄河干流甘肃段NDVI变化的影响

殷菲, 白冰, 黄鹏程, 马玉龙

Impact of climate and human activities on NDVI change in Gansu section of the Yellow River main stream

YIN Fei, BAI Bing, HUANG Pengcheng, MA Yulong

表2 2001—2020年黄河干流甘肃段基于NDVI变化趋势的植被变化程度分类标准

Tab.2 Classification standard of vegetation change degree based on NDVI change trend in Gansu section of the Yellow River main stream from 2001 to 2020

植被变化程度 NDVI变化趋势 严重退化 slope≤-0.03 中度退化 -0.03<slope≤-0.02 轻微退化 -0.02<slope≤-0.01 基本不变 -0.01<slope≤0.01 轻微改善 0.01<slope≤0.02 中度改善 0.02<slope≤0.03 明显改善 slope≥0.03