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以福建晋江沿海防护林的5种主要类型为研究对象,从景观生态学的角度,运用RS和G IS技术,对1989年,1993年,2001年,2008年4个时相的遥感影像进行解译,结合实地调查,得到晋江市4个时相防护林的景观格局图。应用景观分析软件Fragstats,分别计算其景观格局指数并进行分析。结果表明:1989—1993年,5类防护林面积均明显减小,斑块密度增加,破碎化程度加大;1993—2001年,破碎化程度进一步加剧,而以农田防护林网最为明显;2001—2008年,防护林景观格局整体好转,但海岸基于林带仍呈下降趋势。说明基干林带一旦遭受破坏则很难恢复,应加强基干林带保护和建设。
Taking the five main types of coastal shelterbelts in Jinjiang, Fujian as the research objects, the RS and G IS techniques were used to interpret the remote sensing images of the four phases of 1989, 1993, 2001 and 2008 from the perspective of landscape ecology , Combined with field surveys, Jinjiang City, 4 shelterbelt landscape pattern. Using landscape analysis software Fragstats, the landscape pattern index was calculated and analyzed. The results showed that from 1989 to 1993, the area of five types of shelterbelts decreased significantly, the plaque density increased and the degree of fragmentation increased. From 1993 to 2001, the degree of fragmentation was further aggravated, while the shelterbelt network was the most obvious. From 2001 to 2008 In the year, the overall landscape pattern of shelterbelt improved overall, but the coastal zone still showed a downward trend based on forest belt. This shows that it is hard to recover once the trunk forest belt is damaged, and the protection and construction of the trunk forest belt should be strengthened.