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基于RSEI的武夷山国家公园生态环境质量变化分析

2021-08-14李立肖桂荣

福建农业科技 2021年5期

李立 肖桂荣

摘 要:以1992-2018年的landsat系列遥感影像为数据源,分别计算绿度、湿度、热度、干度等4个指标,通过主成分分析法合成遥感生态指数(RSEI),研究分析武夷山国家公园生态环境质量及变化特征,并对武夷山国家公园生态环境质量进行综合分析评价。结果表明,绿度和湿度对区域生态环境起到正面作用,且湿度对环境的影响程度最大。研究区整体生态质量呈现先下降后上升的趋势,在2008年RSEI值达到最低,后来逐渐有所改善,但是整体生态环境质量呈现略微下降的趋势。

关键词:武夷山国家公园;RSEI;主成分分析;生态环境质量

中图分类号:TU 986.52   文献标志码:A   文章编号:0253-2301(2021)05-0063-08

DOI: 10.13651/j.cnki.fjnykj.2021.05.012

Analysis on the Change of Ecological Environmental Quality in Wuyishan National Park Based on RSEI

LI Li, XIAO Gui-rong*

(Institute of Digital China, Fuzhou University, Fuzhou, Fujian 350003, China)

Abstract: By taking the landsat series of remote sensing images from 1992 to 2018 as the data source, four indicators of greenness, humidity, heat, and dryness were calculated respectively, and the remote sensing ecological index (RSEI) was synthesized through the method of principal component analysis to study and analyze the ecological environmental quality and change characteristics of Wuyishan National Park, and the ecological environmental quality of Wuyishan National Park was comprehensively analyzed and evaluated. The results showed that the greenness and humidity had positive effects on the regional ecological environment, and the humidity had the greatest effect on the environment. The overall ecological quality of the study area showed a downward trend and then an upward trend. The RSEI value reached the lowest in 2008 and then gradually improved, but the overall ecological environmental quality showed a slight downward trend.

Key words: Wuyishan National Park;RSEI;Principal component analysis;Ecological environmental quality

國家公园作为一种严格保护并合理利用自然文化资源的可持续发展理念和举措在全球得到普遍认可和蓬勃发展,建立国家公园体制试点也是我国生态文明制度建设的重要内容[1-2],对于促进人与自然和谐相处,推进美丽中国建设,具有极其重要的意义。武夷山国家公园是我国首批10个试点公园之一,但其原生生态系统比较脆弱,而且近年来受到人类活动的干扰也在与日俱增,不合理的开发建设活动如茶园、竹林的开采以及生态旅游的兴起,造成了一系列的生态环境问题,保护与发展矛盾日益突出,增加了对该区域的生态环境的压力。此外,在近20年来,研究区受全球温室效应的影响,极端气候事件频发[3],区域滑坡、泥石流以及洪水等自然灾害频发。因此需要对武夷山国家公园生态环境质量进行客观评价并掌握时空变化趋势,从而为管理部门制定研究区域环境保护措施提供依据,以更好地实现区域可持续发展。……

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