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衡阳市主城区土地利用变化的生态环境效应研究 预览

Study on the Eco-environmental Effect of Land Use Change in Main Urban Areas of Hengyang City
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摘要 以衡阳市主城区为例,利用2005年、2012年和2016年3期TM遥感影像解译图获取土地利用变化数据。首先,对衡阳市主城区土地利用变化特征进行分析。然后,运用区域生态环境质量指数和区域土地利用变化类型生态贡献率,对研究时段内衡阳市主城区土地利用变化的生态环境效应以及导致生态环境质量变化的主导土地利用变化类型进行分析。结果表明,2005—2016年间,衡阳市主城区生态环境质量先增加后下降,总体上维持着区域生态环境的动态稳定,但生态改善和恶化的2种趋势并存。其中,导致衡阳市主城区生态环境质量恶化的主要土地利用变化类型是耕地向城乡建设用地的转变,促进衡阳市主城区生态环境质量改善的主要土地利用变化类型是耕地向水域用地的转变。 This paper obtained the data of land use change based on the TM images interpreted in 1980,1995 and 2005 taking the main urban areas of Hengyang City as a case study.First,this paper analyzed the characteristics of land use change.Then,eco-environmental quality was associated with land use types according to the relative ecological service value of different land use types.The effect of land use change on the eco-environmental quality was measured and quantified by calculating the regional eco-environmental indices.The major land use transformation types causing the change of eco-environmental quality were found out by calculating the contribution proportions of land use transformation types to eco-environmental quality.The ecological environment quality of the main urban area of Hengyang increased at first and then decreased,which maintained the dynamic stability of the regional ecological environment as a whole,but the two trends of ecological improvement and deterioration coexist;and the rate w as faster and faster.In the study phases,the transformation from arable land to constructive land was the major land use transformation type deteriorating the eco-environmental quality;the transformation from arable land to water area was the major land use transformation type improving the eco-environmental quality.
作者 史玲 贺秋华 肖雪 Shi Ling(School of Resource and Environmental and Safety Engineering,University of South China,Hengyang 421001,China)
出处 《安徽农学通报》 2019年第2期119-124,共6页 Auhui Agricultural Science Bulletin
关键词 衡阳市主城区 土地利用变化 生态环境效应 生态环境质量指数 The main urban areas of Hengyang City Land use change Eco-environmental effect Eco-environmental quality index
作者简介 史玲(1997—),女,湖南郴州人,研究生,研究方向:环境规划与评价;通讯作者:贺秋华
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