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莱州市景观格局变化及生态安全分析

2021-10-03王昭颖

安徽农学通报 2021年18期

王昭颖

摘 要:该文以山东省莱州市为研究对象,从斑块类型和景观水平2个层次入手,筛选12个景观格局指数分析了莱州市的土地利用程度及整体景观變化;并采用景观干扰度和景观脆弱度两大指标进行景观生态安全分析,划分生态安全等级,分析2009—2018年的生态安全趋势。结果表明:莱州市受城市经济建设活动的干扰,耕地、林地、水域和建设用地的景观格局在2009—2018年间发生了一定变化,耕地、园地和林地的生态安全度下降。

关键词:土地利用;景观格局;生态安全;莱州市

中图分类号 F301.2  文献标识码 A文章编号 1007-7731(2021)18-0098-06

Analysis of Landscape Pattern Changes and Ecological Security in Laizhou City

WANG Zhaoying

(School of Economics and Management, Tiangong University, Tianjin 300387, China)

Abstract: This paper takes Laizhou City, Shandong Province as the research object. It first starts from two levels of patch type and landscape level, and selects 12 landscape pattern indexes to analyze the specific land use degree and overall landscape change of Laizhou City. The two indicators of landscape disturbance and landscape vulnerability are used to construct a landscape ecological security analysis, and the ecological security trend from 2009 to 2018 is analyzed through the classification of ecological security levels. The results showed that Laizhou City was disturbed by urban economic construction activities, and the landscape pattern of cultivated land, forest land, water area and construction land changed to some extent from 2009 to 2018, and the ecological security of cultivated land, garden land and forest land declined.

Key words: Land use; Landscape pattern; Ecological security; Laizhou city

1 引言

近年来,莱州市工业化、城镇化快速发展,在经济持续飞速增长的同时,资源环境快速消耗、局部生态问题突出,经济效益与生态效益渐趋失衡,生态环境压力加大,地区生态安全遭到威胁。而土地利用变化的研究对于深入分析莱州市的生态安全具有重要的作用,将景观格局分析与土地利用变化研究结合起来,可以更好地明确土地利用景观格局变化和生态安全的发展趋势。2020两会中提出要保持加强生态文明建设的战略定力,牢固树立“生态优先、绿色发展”的导向,持续打好“蓝天、碧水、净土”保卫战[1]。因此,推动城市生态环境的整治与修复成为现今城市持续健康发展的题中之义。而对城市进行土地利用及生态安全分析有助于科学分析土地利用格局以及推测城市生态安全趋势,为推动城市生态环境保护和用地发展提供科学依据。……

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