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中国农学通报

中国农学通报 ›› 2022, Vol. 38 ›› Issue (32): 6-11.doi: 10.11924/j.issn.1000-6850.casb2021-1121

所属专题： 园艺

• 林学·园艺·园林 • 上一篇    下一篇

新疆布尔津县五年间归一化植被指数时空演变

胡馨月(), 孙倩(), 古丽古丽·灭迪力哈孜   

  1. 新疆农业大学林学与风景园林学院,乌鲁木齐 830052
  • 收稿日期:2021-11-23 修回日期:2022-01-28 出版日期:2022-11-15 发布日期:2022-11-09
  • 通讯作者: 孙倩
  • 作者简介:胡馨月,女,1997年出生,辽宁人,研究生,研究方向：林业生态工程与管理。通信地址：830000 新疆维吾尔自治区乌鲁木齐市沙依巴克区八一街道农大东路311号 新疆农业大学,E-mail： h18789797963@163.com。

Spatial-temporal Evolution of Normalized Difference Vegetation Index in Burqin County of Xinjiang in Five Years

HU Xinyue(), SUN Qian(), GULI GULI·Miedi Lihazi   

  1. College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052
  • Received:2021-11-23 Revised:2022-01-28 Online:2022-11-15 Published:2022-11-09
  • Contact: SUN Qian

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摘要：

基于新疆布尔津县2010—2014逐月MODIS-NDVI遥感数据,旨在了解布尔津县四季的归一化植被指数NDVI时空分异规律。采用趋势分析方法,分析了5年来布尔津县NDVI的时间动态特征和空间变化趋势,定量的探讨了5年间研究区NDVI的时空演变。结果表明：(1) 2010—2014年布尔津县NDVI的时序变化呈现下降趋势,反映出不同季节NDVI的大小为：夏季>秋季>春季>冬季。(2) 5年间NDVI 不同年份同季节变化情况大体上变化幅度较小,不同季节 NDVI 的年际变化特征呈现出显著差异,其中春季变化特征显著,而夏季空间分布变化不明显,分布规律相对较为稳定;(3) 5年间布尔津县夏季年均NDVI变化趋势逐渐增加;春季NDVI变化趋势减小,植被指数逐步降低;秋季NDVI变化趋势增加,北部植物分布减少;冬季NDVI变化趋势减小。本研究对布尔津县植被覆盖的时空分布和演变进行分析,为生态环境的区域保护提供一些科学参考。

关键词: 布尔津县, 植被指数, NDVI, 时间序列, 时空演变

Abstract:

Based on the monthly MODIS-NDVI remote sensing data from 2010 to 2014, this paper took Burqin County of Xinjiang as the research area and grasped the temporal and spatial differentiation of the normalized vegetation index (NDVI) of four seasons in Burqin County. The trend analysis method was used to analyze the temporal dynamic characteristics and spatial change trends of NDVI in Burqin County in the five years, and quantitatively discuss the temporal and spatial evolution of NDVI in the study area. The results showed that: (1) the time series of NDVI in Burqin County from 2010 to 2014 presented a downward trend, and the magnitude order of NDVI in different seasons was summer>autumn>spring>winter; (2) the variation of NDVI in the same season of different years was generally small, while the inter-annual variation characteristics of NDVI in different seasons were significant; among them, the variation characteristics in spring were significant, while the spatial distribution change in summer was not obvious and its variation was relatively stable; (3) during the five years, the average annual NDVI change trend in summer in Burqin County gradually increased; in spring, the NDVI change trend decreased, and the vegetation index gradually decreased; in autumn, the NDVI change trend increased while the plant distribution decreased in the north of the county; in winter, the NDVI change trend decreased. This study analyzes the temporal and spatial distribution and evolution of vegetation coverage in Burqin County, aiming to provide certain scientific reference for regional protection of the ecological environment.

Key words: Burqin County, vegetation index, normalized difference vegetation index (NDVI), time series, spatial-temporal evolution

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