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基于2000年、2005年、2010年和2013年4个时相的SPOT/NDVI数据,运用Arc GIS10.2和景观生态学的分析方法,对三北防护林工程区植被景观格局的变化进行了研究。结果表明:景观特征上,14年来工程区植被景观形态趋向复杂,中高度及高度覆盖景观优势度提高。时间上,2000-2005年的植被覆盖状况持续改善,2005-2010年植被覆盖状况局部地区有所退化,2010-2013年的植被覆盖状况重新趋向良性方向发展。空间上高度覆盖斑块类型呈现出数量增加、面积扩大、等级升高三方面变化,主要在东北地区、华北地区、黄土高原南部和准噶尔盆地形成了高等级植被景观团簇。研究结果揭示了三北防护林工程区植被覆盖情况和景观格局变化规律,旨在为工程区生态环境的改善和社会经济价值的创造提供参考。
Based on the SPOT / NDVI data of 4 phases in 2000, 2005, 2010 and 2013, this paper studied the changes of vegetation landscape pattern in the Three North Shelterbelt Project using ArcGIS10.2 and landscape ecology analysis methods. The results show that the landscape pattern of vegetation landscape tends to be complex in the past 14 years, and the landscape dominance in the middle and high coverage areas is enhanced. In time, the vegetation cover condition in 2000-2005 continued to improve. The vegetation cover in some areas deteriorated in 2005-2010, and the vegetation cover in 2010-2013 again tended to develop in a benign way. There are three types of plaques in height, covering area, area and area. The main vegetation types are high-grade vegetation in northeastern China, northern China, southern Loess Plateau and Junggar Basin. The results revealed the vegetation coverage and landscape pattern change in the Three-North Shelterbelt project area, aiming to provide reference for the improvement of ecological environment and the creation of socio-economic value in the project area.