生态学报2017，Vol.37Issue(21)：7019-7029,11.DOI:10.5846/stxb201608311779
京津冀地区城市化对植被覆盖度及景观格局的影响
Spatiotemporal pattern of vegetation cover and its relationship with urbanization in Beijing-Tianjin-Hebei megaregion from 2000 to 2010
摘要
Abstract
Accelerated urbanization and socio-economic development can cause a series of environmental problems,such as decreased ecological quality.Accurately and efficiently quantifying the effects of urbanization on vegetation is critical for understanding regional ecological conservation and achieving sustainable development.Previous studies have primarily focused on the spatiotemporal patterns of vegetation cover and its relationship with climatic factors.Here,we quantified the spatiotemporal patterns of vegetation cover from 2000 to 2010 in the Beijing-Tianjin-Hebei megaregion.We then analyzed the effects of urbanization on vegetation cover dynamics.We used MODIS data and Landsat TM data.We found that (1)during the study period,urban land expanded very rapidly in this megaregion.The area of built-up lands increased from 1.79×104 km2 in 2000 to 2.16×104 km2 in 2010,which is an increase of 21.16％.(2) There was a slight but insignificant (P=0.45) increasing trend in vegetation coverage from 2000 to 2010.The region was dominated by low-medium and medium coverage vegetation.(3) There were similarities and differences in the spatiotemporal patterns among different types of vegetation with varied levels of vegetation density.For vegetation types with low to medium and high vegetation density,fragmentation of vegetation increased from 2000 to 2010.In contrast,for vegetation types with low and medium vegetation density,the landscape pattern became more aggregated rather than fragmented in regions covered with these types of vegetation.(4) The proportional cover of developed land and vegetation coverage showed negative correlations (P =0.08).However,the proportional cover of developed land showed a significantly positive relationship with the proportion of area covered by vegetation types with low vegetation density (P＜0.001).关键词
京津冀/植被覆盖度/城市化/时空动态/景观格局Key words
Beijing-Tianjin-Hebei/vegetation cover/urbanization/spatiotemporal dynamics/landscape pattern引用本文复制引用
王静,周伟奇,许开鹏,颜景理..京津冀地区城市化对植被覆盖度及景观格局的影响[J].生态学报,2017,37(21):7019-7029,11.基金项目
国家自然科学基金重大项目(41590841) （41590841）
全国生态环境十年变化(2000-2010年)遥感调查与评估项目(STSN-12-01) （2000-2010年）
环境保护部专项(2110203) （2110203）
