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以Landsat系列卫星的MSS/TM/ETM+的遥感影像以及SPOT-5、ZY-3卫星的遥感影像为数据源,在Arc GIS和ENVI软件相结合的技术条件下,对1979—2014年5个时期的遥感数据进行处理,获取了中国近35年来填海造地变化数据,并系统分析了1979—2014年中国填海造地4个阶段的时空变化特征。结果表明,1979—2014年中国填海造地面积已达2 156.77 km~2,年均填海造地面积增长了61.62 km~2,其中,辽宁省是填海造地面积最大的省份,占总面积的18.41%,海南省填海造地面积最小,仅占总面积的0.99%。在此期间,由各阶段围海转化为填海造地的面积总量为405.28 km~2,占填海造地总面积的18.79%。年均围海转化填海造地面积为16.89 km~2。由各类型围海转化为填海造地的面积均呈现逐年增长趋势,其中以养殖用海转化为填海造地的面积增长幅度最大。
Based on the MSS / TM / ETM + remote sensing images of Landsat series satellites and the remote sensing images of SPOT-5 and ZY-3 satellites, under the technical conditions of ArcGIS and ENVI software, five periods from 1979 to 2014 , The data of reclamation and land reclamation in the past 35 years in China were obtained and the temporal and spatial variation characteristics of reclamation and land reclamation from 1979 to 2014 in China were systematically analyzed. The results show that from 1979 to 2014, the land reclamation area in China has reached 2 156.77 km 2, with an average annual reclamation area of 61.62 km 2. Among them, Liaoning Province is the largest reclamation area with a total area of 18.41%, Hainan Province, the smallest reclamation area, accounting for only 0.99% of the total area. During this period, the total area converted from reclamation into reclaimed land by each stage was 405.28 km 2, accounting for 18.79% of the total land reclamation area. The annual average land cover area for reclamation and sea reclamation is 16.89 km ~ 2. The area of land reclamation from reclaimed land to reclamation reclamation area showed a trend of increasing year by year. Among them, the area reclaimed from reclaimed land for reclamation was the largest.