CAJ | 학술논문

本文以南方红壤丘陵典型案例区吉泰盆地为例,运用RS和GIS技术.在对典型时段遥感影像进行解译的基础上,采用土地利用程度综合指数、土地利用类型动态度以及土地利用类型变化趋势和状态指数等模型,计算了1995-2006年吉泰盆地土地利用变化数量特征,揭示了南方红壤丘陵地区11年来土地利用变化的时空格局.研究结果表明:①1995-2006年吉泰盆地土地利用结构基本稳定,林地和耕地是该区主要土地利用类型;②11年来吉泰盆地水域和建设用地面积缓慢增长,水域增幅较多,其他地类面积有所下降,草地减幅最大;③林地转化为耕地,耕地转化为水域,以及草地转化为林地是吉泰盆地主要土地利用类型的转移模式.三种类型的转化面积依次为2887.91hm~2、2821.19hm~2和2326.97 hm~2.从空间分布上看林地转为耕地模式分布最为广泛,耕地转化为水域分布较松散,草地转林地主要分布在吉泰盆地的北部地区;④动态度和状态指数研究发现,吉泰盆地未利用地的年变化率绝对值最大,林地年变化率最小.在未来的一段时间内,水域和建设用地规模呈增大的趋势,其余地类呈不同程度减少的态势.
본문이남방홍양구릉전형안례구길태분지위례,운용RS화GIS기술.재대전형시단요감영상진행해역적기출상,채용토지이용정도종합지수、토지이용류형동태도이급토지이용류형변화추세화상태지수등모형,계산료1995-2006년길태분지토지이용변화수량특정,게시료남방홍양구릉지구11년래토지이용변화적시공격국.연구결과표명:①1995-2006년길태분지토지이용결구기본은정,임지화경지시해구주요토지이용류형;②11년래길태분지수역화건설용지면적완만증장,수역증폭교다,기타지류면적유소하강,초지감폭최대;③임지전화위경지,경지전화위수역,이급초지전화위임지시길태분지주요토지이용류형적전이모식.삼충류형적전화면적의차위2887.91hm~2、2821.19hm~2화2326.97 hm~2.종공간분포상간임지전위경지모식분포최위엄범,경지전화위수역분포교송산,초지전임지주요분포재길태분지적북부지구;④동태도화상태지수연구발현,길태분지미이용지적년변화솔절대치최대,임지년변화솔최소.재미래적일단시간내,수역화건설용지규모정증대적추세,기여지류정불동정도감소적태세.
This paper analyzed the land use changes from 1995 to 2006 in Jiangxi's Jitai Basin, which is in the typical red soil hilly regions in southern China, using the ARCINFO format land use data in 1995 and 2000 with a scale of 1:10 000 and the high-resolution Landsat TM image in 2006. By interpreting the TM images with the reference to the above data, the 2006 land use data was obtained. Based on these three-period land use data,this paper did some analysis work using ArcGIS 9.2 and EXCEL, and investigated the characteristics of land use change in the Jitai Basin. The outcomes indicated that during the study period, the land use was steadily developed in Jitai Basin, in which forestland and farmland remained as the main types. Water area and buih-up land area were gently increased while the other four land use types were declined, but the proportion of every type is basically unchanged. The annual changing rate of unused land was the largest, and that of forestland was the smallest. Considering the transform of land uses in the Jitai Basin, forestland converted to farmland, farmland converted to water area, and grassland converted to forestland were the three main types from 1995 to 2006, any of which covered an area above 2300 hm~2. In view of the point of spatial distribution, forestland converted to farmland was the most widely distributed type, while the type of farmland converted to water area was scarcely distributed. Grassland converted to forestland was mainly distributed in the northern part of the Jitai Basin. In the future, built-up land area and water area will expand gradually, both of which have positive state index, and the others have negative state index values, thus they will slowly shrink.