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陈科皓.基于MODIS-NDVI的陕西省植被覆盖变化特征分析[J].农学学报,2018,8(8):16-21..Characteristics of Vegetation Coverage Change in Shaanxi: Based on MODIS-NDVI[J].Journal of Agriculture,2018,8(8):16-21
基于MODIS-NDVI的陕西省植被覆盖变化特征分析
Characteristics of Vegetation Coverage Change in Shaanxi: Based on MODIS-NDVI
投稿时间:2017-09-28  修订日期:2018-04-19
DOI:10.11923/j.issn.2095-4050.cjas17090021
中文关键词: MODIS-NDVI  陕西省  植被覆盖
英文关键词: MODIS-NDVI  Shaanxi province  Vegetation cover
摘要点击次数: 126
全文下载次数: 110
基金项目:无基金
作者单位E-mail
陈科皓 陕西省土地工程建设集团有限责任公司 chenkehao.2008@163.com 
中文摘要:
      为实现人地关系协调发展,为陕西省生态建设政策的制定和实施提供理论依据,本研究基于MODIS-NDVI 影像及高程数据,采用MVC、一元线性回归等方法,分析陕西省2011—2015 年NDVI 的时空变化特征。结果表明:(1)陕西省NDVI值呈现“南高北低”的分布特征,陕南地区及陕北南部森林植被茂密,植被覆盖情况较好,陕北北部属于风沙区,植被覆盖情况较差,关中地区以农作物为主,植被覆盖情况居中;(2)2011—2015 年陕西省NDVI值呈波动变化,整体变化趋于稳定,且有好转趋势,主要分布在关中及陕南地区;陕北地区NDVI值有退化迹象;(3)随着海拔高度的增加,NDVI值呈“降低—升高—降低”的变化,2000~2500 m海拔高度范围内的NDVI值最高,植被覆盖情况较好,主要是分布在秦岭山脉的太白山地区。
英文摘要:
      To realize the harmonious development of human and land, and provide a reference for formulation and implementation of ecological construction policy in Shaanxi, based on MODIS-NDVI image and altitude data, the author analyzed the spatio-temporal variation characteristics of NDVI in Shaanxi from 2011 to 2015 by using MVC and linear regression. The results showed that: (1) the distribution of NDVI in Shaanxi was characterized by“high south and low north”; the forest vegetation was thick in southern Shaanxi, as well as in the south area of northern Shaanxi; the vegetation coverage was poor in the north area of northern Shaanxi, which belonged to sandy area; the vegetation coverage was medium in Guanzhong region, which was mainly dominated by crops; (2) from 2011 to 2015, the NDVI value in Shaanxi fluctuated, the overall change tended to be stable and the trend was improving, mainly in Guanzhong and southern Shaanxi; the NDVI value in northern Shaanxi showed signs of degradation; (3) with the increase of altitude, the NDVI value presented a change of “decrease-increase-decrease”. NDVI value was the highest in the range of 2000-2500 m where the vegetation coverage was better, mainly distributed in Taibai mountain area of Qinling mountains.
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