论文部分内容阅读
ＲＳ与ＧＩＳ技术结合，探讨了应用ＴＭ分析沿海滩涂围垦动态的技术流程和方法，分析了１９５０－１９９７年粤西沿海围垦变化动态.结果表明：（１）ＲＳ与ＧＩＳ技术结合是分析沿海围垦动态变化的一种简便易行方法．（２）截止１９９７年，粤西岸段共围垦滩涂 ６０ ４６０ ｈｍ~２，其中，１９８７年前围垦４７ ９３６ｈｍ~２，１９８８年后围垦 １２ ５２４ ｈｍ~２．（３）１９８７年前以农业围垦为主，占总面积的９８. ４１％，利用率为７３.７１％（４）１９８８年后，水产养殖增长迅速，围海造地规模扩大．水产养殖占农业围垦总面积的９２．１８％，比 １９８７年前增加 ３６．７６％，农业围垦的利用率比 １９８７年前提高２２．３２％．粤西填海造地面积达 １０７３ ｈｍ~２，城镇建设用地是 １９８７年前的 ２２６ 倍。
RS and GIS technology, this paper discussed the technological process and method of analyzing the reclamation of coastal beach by using TM, and analyzed the dynamic change of reclamation along the coast of western Guangdong from 1950 to 1997. The results showed that: (1) RS and GIS combined with the analysis of coastal reclamation dynamics A simple and easy way to change. (2) By 1997, a total area of 60,460 hm ~ 2 was reclaimed from the western coast of Guangdong, including 47,936 hm ~ 2 before 1987 and 12,224 hm ~ 2 after 1988. (3) Agricultural reclamation was mainly carried out before 1987, accounting for 98.41% of the total area with a utilization rate of 73.71%. (4) After 1988, aquaculture grew rapidly and the scale of land reclamation by sea expanded. Aquaculture accounted for 92.18% of the total area reclaimed by agriculture, an increase of 36.76% over 1987, and the utilization of agricultural reclamation increased by 22.32% over 1987. The land reclamation area in western Guangdong reached 1073 hm ~ 2, and the urban construction land was 226 times that of 1987.