广西峰丛洼地区生态需水与景观格局的空间耦合关系分析

发布时间：2018-06-16 21:35

本文选题：峰丛洼地 + 生态需水　；参考：《生态与农村环境学报》2017年09期

【摘要】：选取广西峰丛洼地的典型区域田东县为研究对象,基于遥感和GIS技术,结合气象站实测资料,应用联合国粮农组织(FAO)推荐的Penman-Monteith法和Arc GIS软件模拟研究区域生态需水的空间分布。利用Landsat 8数据解译出的土地利用数据,对研究区景观格局指数进行提取,分析生态需水与景观格局的相关性。结果表明:田东县年度植被生态需水定额为85.91~339.27 mm;北部和南部山区的植被生态需水定额相对较大,中部、西部和东南部区域的生态需水定额相对较小。植被生态需水定额与景观多样性、景观破碎度呈极显著负相关,相关系数分别为-0.198和-0.186;与景观连通性呈极显著正相关,相关系数为0.221。研究成果可为区域的景观格局优化管理和水资源优化配置提供依据。
[Abstract]:Based on remote sensing and GIS technology, the Penman-Monteith method and Arc GIS software recommended by FAO (FAO) were used to simulate the spatial distribution of regional ecological water demand in Tiandong County, a typical region of Guangxi Fengcong depression, based on remote sensing and GIS technology, and combined with the measured data of meteorological stations, using the Penman-Monteith method and Arc GIS software recommended by FAO (United Nations Food and Agriculture Organization). Using Landsat 8 data to interpret the land use data, the landscape pattern index of the study area was extracted, and the correlation between ecological water demand and landscape pattern was analyzed. The results showed that the annual vegetation ecological water demand quota was 85.91 ~ (339.27 mm) in Tiandong County, and the vegetation ecological water demand quota was relatively large in the northern and southern mountainous areas, but relatively small in the central, western and southeast regions. Vegetation ecological water demand was negatively correlated with landscape diversity and landscape fragmentation, with correlation coefficients of -0.198 and -0.186, respectively, and significantly positive correlation with landscape connectivity, with a correlation coefficient of 0.221. The research results can provide the basis for optimal management of regional landscape pattern and optimal allocation of water resources.
【作者单位】：上海市环境科学研究院;广西壮族自治区水利科学研究院;中国科学院西双版纳热带植物园;
【基金】：广西水利科技项目(201418,201517,201612) 国家自然科学面上基金(51679141)
【分类号】：TU984.18;TV213.4

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