摘要
随着全球气候变化与城市化进程加速,城市生态建设受到越来越多的关注。为揭示多因素变化背景下关中地区的植被变化规律,基于MOD13A1遥感影像,运用定性与定量相结合的方法研究了陕西关中2005—2020年归一化植被指数(NDVI)的时空演变特征及其驱动力,结果表明:①16年间,陕西关中的NDVI值以每年0.0049的速率波动上升,2020年最高,达到0.68;②陕西关中南部NDVI值水平明显优于北部,西南部NDVI值表现最好,均处于0.7以上;③陕西关中植被改善区面积占总面积的52.28%,植被退化区面积占28.73%;④影响陕西关中NDVI分布的主要地理、气候、人为因子分别为地貌类型、降水、土地利用。
Along with global climate change and the acceleration of urbanization, more and more attention has been paid to urban ecological construction. In order to reveal the vegetation change law in Guanzhong region under the background of multi-factor change, the paper studied the spatial and temporal evolution characteristics and driving forces of NDVI in Guanzhong region, Shaanxi from 2005 to 2020 by using combined qualitative and quantitative method based on MOD13A1 remote sensing images. The outcomes show that a) in the past 16 years, the NDVI value in Guanzhong region of Shaanxi Province has been fluctuating increased by the rate of 0.004 9 yearly and the highest is in 2020, reaching 0.68;b) the level of NDVI in the south of Guanzhong region is obviously better than that in the north and the NDVI value in the southwest is the best, more than 0.7;c) the vegetation improvement area accounts for 52.28% of the total area and the vegetation degradation area accounts for 28.73% and;d) the main geographical, climatic and anthropogenic factors affecting the distribution of NDVI are geomorphological type, precipitation and land use.
作者
吕攀屹
黄领梅
权全
莫淑红
LYU Panyi;HUANG Lingmei;QUAN Quan(State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China of Xi’an University of Technology,Xi’an,Shaanxi 710048,China)
出处
《中国水土保持》
2022年第7期39-44,74,I0005,共8页
Soil and Water Conservation in China
关键词
归一化植被指数(NDVI)
时空变化
敏感性分析
驱动力
关中地区
Normalized Difference Vegetation Index(NDVI)
spatial and temporal variation
sensitivity analysis
driving force
Guanzhong region
作者简介
吕攀屹(2000—),男,新疆乌鲁木齐人,硕士研究生,主要从事生态水文研究;通信作者:黄领梅(1972—),女,四川乐至人,副教授,博士,主要从事生态水文研究。
