CAJ | 학술논문

以新疆1990年、2000年、2005年和2008年4期土地利用数据库及其遥感影像为数据源,利用GIS空间分析提取3期耕地动态变化数据.从现状分析、发展动态对新疆3期耕地开发利用的空间格局、面积变化和类型结构进行了分析.结果表明,耕地总面积持续增加,耕地年均净增和开垦速度呈先增后减的趋势,耕地年均流失速度持续递减;耕地开垦由绿洲地区向沙漠、戈壁延伸,而耕地流失则主要集中在绿洲地区,中东、西北和西南的边缘地区的耕地面积变化相对较大(Rid/d>1.02);耕地开发结构由草地和林地为主转向草地和未利用地为主,未利用地的开发结构由裸土地、盐碱地为主转向沙地、戈壁和盐碱地为主,耕地的利用结构以草地、建设用地和未利用地为主;耕地与建设用地的相互转化始终是负转化,与草地间的转化是正转化.
이신강1990년、2000년、2005년화2008년4기토지이용수거고급기요감영상위수거원,이용GIS공간분석제취3기경지동태변화수거.종현상분석、발전동태대신강3기경지개발이용적공간격국、면적변화화류형결구진행료분석.결과표명,경지총면적지속증가,경지년균정증화개은속도정선증후감적추세,경지년균류실속도지속체감;경지개은유록주지구향사막、과벽연신,이경지류실칙주요집중재록주지구,중동、서북화서남적변연지구적경지면적변화상대교대(Rid/d>1.02);경지개발결구유초지화임지위주전향초지화미이용지위주,미이용지적개발결구유라토지、염감지위주전향사지、과벽화염감지위주,경지적이용결구이초지、건설용지화미이용지위주;경지여건설용지적상호전화시종시부전화,여초지간적전화시정전화.
With the data of cultivated land in Xinjiang during 1990-2008 extracted from the land use data base and remote sensing images by means of spatial analyst in GIS, this paper analyzed its present temporal-spatial patterns, area changes and type structures, and its development dy-namics. The results showed that the total area of cultivated land kept increasing, the annual aver-age net-increased and reclamation speed increased sharply during 1990 and 2005 and then de-creased slightly during 2005 and 2008, while the annual average loss speed kept decreasing. The reclamation of cultivated land extended from oases to deserts and gobi deserts, while the loss of cultivated land mainly occurred in oases. At the same time, the cultivated-land change in the mid-east, northwest and northeast border districts was relatively greater (Rid>1.02). The reclama-tion transferred from grassland and forest land to grassland and non-utilized land, the ratio of non-utilized land reclamation continuously increased and the reclamation transferred from bare land and saline-alkali land to sandy lands, gobi deserts and saline-alkali land, while the utiliza-tion type of transformed cultivated land was mainly grassland, non-utilized land and construction land. The transformation between cultivated land and construction land was always negative, while the transformation between cultivated land and grassland was positive.