宁南山区长时间序列植被覆盖变化研究

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摘 要：以宁南山区为研究区域，对研究区1990—2020年各年度NDVI及植被覆盖度进行分析。结果表明，1990—2020年研究区的NDVI整体呈升高趋势，植被覆盖度呈现由低植被覆盖度向中高植被覆盖度演变的态势；植被覆盖度较高的区域大部分位于研究区南部，植被覆盖度最高的区域为六盘山区。

关键词：长时间序列； NDVI； 植被覆盖度； 时空分布； 动态变化； 宁南山区

中图分类号：TP79； X171.1    文献标识码：A      文章编号：1002-204X（2023）01-0033-06

doi：10.3969/j.issn.1002-204x.2023.01.010

Study on Changes in Long Time Series of Vegetation Coverage

in Southern Ningxia Mountain Area

Ma Dawei1，2， Wei Caiyong1，2*， Wang Wenlong1，2， Yang Yating1，2， Han Fen1，2， Yang Yang1，2

（1.Ningxia Remote Sensing Survey Institute， Yinchuan， Ningxia 750021; 2.Ningxia Data and Application Center of High Resolution Earth Observation System， Yinchuan， Ningxia 750021）

Abstract Taking the southern mountain area of Ningxia as the study area， this paper analyzed the NDVI and vegetation coverage from 1990 to 2020. The results showed that the NDVI during the period showed an overall upward trend， and the vegetation coverage showed a trend of evolution from low vegetation coverage to medium and high vegetation coverage. Most of the areas with high vegetation coverage were located in the south of the study area， and the highest vegetation coverage was in Liupanshan Mountain Area.

Key words Long time series; NDVI; Vegetation coverage; Spatiotemporal distribution; Dynamic changes; Southern Ningxia mountain area

植被是自然地域综合体（自然生态系统）的要素和环境的重要组分，植被覆盖度是描述生态环境的重要基本参数，通过建立植被覆盖度与植被指数之间的关系，进而估算植被覆盖度，能够较为客观地反映某一区域植被覆盖情况[1]。（剩余6856字）