| 焦岗湖湿地土地利用格局演变及区域可持续性评价 |
| 摘要点击 1522 全文点击 885 投稿时间：2014-11-19 修订日期：2014-12-29 |
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| 中文关键词 湿地土地利用 可持续性 区域 综合评价 模型 |
| 英文关键词 wetland land use sustainability region comprehensive evaluation model |
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| 中文摘要 |
| 以焦岗湖湿地为研究区,选取1995~2013年间5期遥感影像数据,应用土地利用变化测度模型分析研究区土地利用变化特征,并结合社会统计数据构建可持续性测评体系,对研究区可持续发展水平进行量化分析. 结果表明:①研究区旱地、水田、建筑用地为主导景观,1995~2000年和2010~2013年为土地利用变化热点时段,但驱动机制不同; ②近20 a尺度上建筑用地变化最为明显(增幅为123.32%),湿地萎缩面积较大(减幅为23.15%),空间格局层次单一,存在一定土地利用风险; ③区域可持续发展水平各时段评价结果分别为差、差、中、良、中,仍有较大提升空间; ④2010年随着区域生产力的提高和区域稳定性的增强,研究区可持续发展水平较好,2010年后由于环境负荷的进一步累积,区域受胁度升高,可持续发展水平受阻,应引起决策者和公众的广泛重视. |
| 英文摘要 |
| Changes in land use and sustainability evaluation of wetland in Jiaogang Lake from 1995 to 2013 were analyzed, based on the land use change models and an index system, supported by RS, GIS, and social statistical data. The results showed: ① dry land, paddy field, and building land were the predominant landscape in the study area. The arable land was mainly converted during 1995-2000, which was driven by the extension of agriculture, and the building land increased significantly during 2010-2013, which was driven by the tourism development. ② Compared to the beginning research area, the building land increased by 123.3%, and the wetland decreased by 23.15%. The land system was at risk for a low proportion of wetland, scarcity of unused land, and the fragmented landscape. ③ The regional sustainability results were bad level, bad level, poor level, good level, and poor level during the different periods, with some room for improvement. ④ The fitness of regional sustainability in study area yielded satisfactory results in 2010, owing to the rapid growth of regional productivity and the regional stability. Since 2010, with the increasing environmental load, the regional sustainability fell down to the poor level. The obstruction of sustainable development is necessary to be addressed in the study area. |
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