• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

厦门市不透水面时空演变及相关因子分析

Spatial Evolution and Related Factors of Municipal Impervious Surfaces in Xiamen

  • 摘要: 伴随着城镇化进程的加快,城市内的不透水面持续增加,雨水径流难以下渗,引发城市内涝及热岛效应。以不透水面为主的城市景观格局改变,受到社会广泛关注。掌握不透水面时空演变,对于城市生态保护和“海绵城市”建设具有重要意义。以厦门为研究区,选取2000年、2004年、2010年及2015年Landsat遥感影像,采用V-I-S模型提取城市不透水面,利用不透水面转移矩阵及景观格局指数等方法,研究厦门市近15年来不透水面景观格局时空演变。结果表明,次高盖度、较高盖度、高盖度和极高盖度类型不透水面面积在2000-2015年间保持扩张趋势,分别增加10 394.73、9 802.89、8 942.4 hm2,低盖度和极低盖度类型不透水面面积迅速减少,其中极低盖度类型减少趋势明显,从2000年43 906.86 hm2减少到2015年的8 327.79 hm2,低盖度类型不透水面面积从32 499.81 hm2降低到18 958.95 hm2,进而分析了不透水面景观格局变化与城市生态环境的关联,为优化城市不透水面的科学布局提供依据。

     

    Abstract: Urbanization and municipal development inevitably brings about the ever-increasing impervious surfaces in the city. Such spatial evolution hindered rainwater infiltration on the ground causing water logging and heat island effect. Consequently, the changes in urban landscape and land use pattern have become a major concern for the government and people live in the city. Through a keen understanding of the Space-and-time evolution of impervious surface, can help us to protect the urban ecosystem and building "sponge city". For Xiamen, in the current study, the V-I-S model applied to extract the impervious surface in the city from four Landsat remote images taken in 2000, 2004, 2010 and 2015. The spatial pattern and temporal evolution of the municipal impervious surface in the past 15 years were constructed for a detailed analysis using transfer matrix and landscape pattern index. The results showed that LHISA, MHISA and HDISA in Xiamen expanded continually from 2000 through 2015, with the accumulated increases of 10 394.73 hm2、9 802.89 hm2 and 8 942.4 hm2 respectively. Meanwhile, LDISA and VLISA were declined rapidly, as LDISA reduced to 18 958.95 hm2 and VLISA remarkably decreased from 43 906.86 hm2 in 2000 to 8 327.79 hm2 in 2015. The correlation between the impervious surface pattern on the landscape and the urban ecological environment was discussed with respect to the optimized scientific planning of the impervious surface for the city.

     

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