马姣娇, 牛安逸, 徐颂军, 陈志云. 基于地学信息图谱的珠海淇澳岛土地利用格局分析[J]. 华南师范大学学报(自然科学版), 2018, 50(2): 77-85.
引用本文: 马姣娇, 牛安逸, 徐颂军, 陈志云. 基于地学信息图谱的珠海淇澳岛土地利用格局分析[J]. 华南师范大学学报(自然科学版), 2018, 50(2): 77-85.
Analysis of land use Pattern Based on Geo-information TUPU in Qi’Ao Island, Zhuhai[J]. Journal of South China Normal University (Natural Science Edition), 2018, 50(2): 77-85.
Citation: Analysis of land use Pattern Based on Geo-information TUPU in Qi’Ao Island, Zhuhai[J]. Journal of South China Normal University (Natural Science Edition), 2018, 50(2): 77-85.

基于地学信息图谱的珠海淇澳岛土地利用格局分析

Analysis of land use Pattern Based on Geo-information TUPU in Qi’Ao Island, Zhuhai

  • 摘要: 利用珠海淇澳岛1996、2003、2009、2013年4期高分遥感影像数据,通过遥感解译得到19962013年土地利用的基本情况,运用GIS技术及地学信息图谱基本理论,合成3个时段土地利用格局变化图谱,了解该区土地利用变化时空分布格局. 研究结果表明淇澳岛在19962013年的土地利用发生显著变化:(1)从总体变化趋势来看,在19962013年,林地、建筑面积都有所增加,新增面积最大图谱单元是林地,面积为492.3 hm2,主要来源于滩涂与海域,集中分布在岛屿西北角红树林自然保护区;其次是建设用地,面积达143.38 hm2,主要来源于裸地与灌木林地. 研究区域范围内海域、滩涂与裸地呈减少趋势,海域主要转换为滩涂,滩涂主要转化为林地,裸地主要转向建筑用地,坑塘水域变化起伏. (2)从格局变化的空间分布上看,虽稳定型占据主体地位,但岛屿西北角红树林区存在极大不稳定性. (3)从格局变化的时间分布上看,土地变化模式具有明显的阶段性,土地利用变化主要集中在19962009年,20092013年的用地格局趋于稳定.

     

    Abstract: Based on the land use data translated from four high-resolution remote sensing images of 1996, 2003, 2009, 2013 in Zhuhai Qi'ao Island, land use change in three corresponding phases in Zhuhai Qi'ao Island is synthesized by the Geo-information TUPU of the mode of arable land by using ArcGIS 10.0 and basic theory of Geo-spectrum information. The results shows that the land use is changed significantly from 1996 to 2013: (1)From the overall trend of change, forest land, the construction area are somewhat increased. The largest new area atlas unit is woodland with an area of 492.3 hm2. It is mainly derived from tidal flat and sea area and is mainly distributed in the mangrove nature reserve of the northwest corner of the island. The construction land is the second largest with area of 143.38 hm2, mainly from bare land and shrub land. Within the scope of the study area, waters body, beaches and bare land are decreased. Sea beach is changed tidal flat and tidal flat is changed to forest land. Bare land is changed to construction land and pond water is changed ups and downs. (2)From the perspective of the spatial distribution of the pattern change, although the dominant position of the stable type, there is a great instability in the mangrove area at the northwest corner of the island. (3)From the perspective of the time distribution of the pattern change, the land change pattern has obvious stages, mainly in 1996-2009, and the land use pattern tends to be stable in 2009-2013.

     

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