CAJ | 학술논문

该文利用1990、2001和2009年三期TM影像数据解译的土地利用与覆盖数据，运用fragstats33．软件选取多样性指数、优势度指数、均匀度指数等景观指数结合斑块密度、动态度等的统计与计算。结果表明：（1）耕地和林地占总面积的近95％以上，是该地区占据绝对优势的两种斑块类型，其它斑块类型面积比重很小，各类型的面积差异较大；（2）1990—2009年间，斑块面积减少数量最大的两类是耕地和草地，分别减少了7372．7km2和6780．9km2，斑块面积减少幅度最大的两类是未利用地和草地，分别减少了623．2％和597．3％，两者合计降低到了总面积的07．8％，建设用地面积大幅度增加17938．5km2，增加了56．5倍，林地面积前期增加，2001年后快速下降，水体面积变化幅度较小；（3）1990—2009年景观斑块总数增加了83226个，其中2001年后增加的占700．1％，耕地、建设用地和林地斑块数量均大幅度增加，斑块密度也快速增加；草地和未利用地斑块数量、平均斑块面积均呈减小趋势，景观破碎化程度不断加大，景观多样性也相应提高。
해문이용1990、2001화2009년삼기TM영상수거해역적토지이용여복개수거，운용fragstats33．연건선취다양성지수、우세도지수、균균도지수등경관지수결합반괴밀도、동태도등적통계여계산。결과표명：（1）경지화임지점총면적적근95％이상，시해지구점거절대우세적량충반괴류형，기타반괴류형면적비중흔소，각류형적면적차이교대；（2）1990—2009년간，반괴면적감소수량최대적량류시경지화초지，분별감소료7372．7km2화6780．9km2，반괴면적감소폭도최대적량류시미이용지화초지，분별감소료623．2％화597．3％，량자합계강저도료총면적적07．8％，건설용지면적대폭도증가17938．5km2，증가료56．5배，임지면적전기증가，2001년후쾌속하강，수체면적변화폭도교소；（3）1990—2009년경관반괴총수증가료83226개，기중2001년후증가적점700．1％，경지、건설용지화임지반괴수량균대폭도증가，반괴밀도야쾌속증가；초지화미이용지반괴수량、평균반괴면적균정감소추세，경관파쇄화정도불단가대，경관다양성야상응제고。
Guangxi Beibu Gulf Economic Zone is a new hot spot for enhancing development activi‐ties in Chinese Southeast Coast ,w here the landscape pattern is undergoing rapid changes .Based on the land cover datasets in 1990 ,2001 and 2009 ,by using Fragstats 3 3. software ,this paper quantita‐tively analyzed the change process and regularity of landscape pattern in this area ,with selecting land‐scape diversity index ,landscape dominance index ,landscape evenness index ,and some other indices such as patch density ,dynamic degree ,average patch area .The results show that :(1) The total area of cultivated land and woodland account for approximately over 95% of the entire area ,and the area of other patch types are very small ;(2)From 1990 to 2009 ,the two largest reduced areas of cultivated land and grassland reduced respectively by 737 2.7km2 and 678 0.9km2 ,While the reduced rate of the ar‐ea of unused land and grassland is the largest two types with reduction rate of 62 3.2% and 59 7.3% , w hich reduced to 0 7.8% of the entire area in 2009 .T he area of construction land in 2009 increased sig‐nificantly by 1793 8.5km2 ,5 6.5 times larger than that of 1990 .The area of woodland increased before 2001 and then reduced rapidly after that .Changes in water area were slight .(3) The total number of patches increased by 83 226 from the year 1990 to 2009 ,among w hich 70 0.1% is from 2001 to 2009 . The patch numbers of cultivated land ,construction land and woodland all increased sharply ,and of which the patch density increased rapidly at the same time .The number and average area of grassland and unused land decreased ,and the fragmentation degree of landscape was increasing constantly .