首页|宁夏沙坡头国家级自然保护区植被覆盖时空变化及其与气候因子的关系

宁夏沙坡头国家级自然保护区植被覆盖时空变化及其与气候因子的关系

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为了研究黄河上游干旱区植被覆盖度的变化规律,选取宁夏沙坡头国家级自然保护区为研究区,基于2002-2021年Landsat卫星遥感影像,通过趋势分析法、相关分析与偏相关分析法等,从时间和空间尺度上分析研究区近20 a归一化差值植被指数(NDVI)变化及其与气温、降水的关系.结果表明:研究区的植被覆盖度率较低,2002-2021年NDVI值呈波浪式显著增大的趋势;研究区NDVI在空间上大致呈现东高西低的特点,且NDVI与气温、降水基本呈正相关关系.
Temporal and Spatial Variation of Vegetation Cover and Its Relationship with Climatic Factors in Ningxia Shapotou National Nature Reserve
To study the changes of vegetation coverage in the arid area of the upper reaches of the Yellow River,selecting Ningxia Shapotou National Nature Reserve as the research area,based on Landsat remote sensing images from 2002 to 2021,trend analysis,correlation analysis and partial correlation analysis were used to analyze the changes of normalized difference vegetation index(NDVI)and its relationship with temperature and precipitation in the last 20 years from the temporal and spatial scales.The results show that the vegetation coverage rate in the study area is low,and NDVI value showes a significant trend of wavy increase from 2002 to 2021.In the study area,NDVI is generally high in the east and low in the west,and there is a positive correlation between NDVI and temperature and precipitation,respectively.

vegetation coveragenormalized difference vegetation indexcorrelation analysisclimate factorNingxia Shapotou National Nature Reserve

郭佳诚、赵星莹、常青、庞海威、张玉、郑彩之、侯森、耿琪康、边振、侯瑞萍

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济南大学 水利与环境学院,山东 济南 250022

宁夏沙坡头国家级自然保护区管理局,宁夏 中卫 750021

国家林业和草原局林草调查规划院,北京 100714

植被覆盖度 归一化差值植被指数 相关性分析 气候因子 宁夏沙坡头国家级自然保护区

山东省自然科学基金项目国家级自然保护区科技研发项目国家级自然保护区科技研发项目

ZR2020QC173YL-2021122101YL-2021122102

2024

10.13349/j.cnki.jdxbn.20240403.002

济南大学学报(自然科学版)
济南大学

济南大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.441
ISSN：1671-3559
年,卷(期)：2024.38(4)
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