摘要
利用1984，1991年和2000年3个年度的土地利用现状图以及景观区划图，通过定量指标体系，分析了伊金霍洛旗1984-2000年间土地利用格局的时空变化以及区域差异。结果表明：草地是当地主要的土地利用类型，占总土地面积的59．03％～69．33％。从土地利用类型变化幅度、年变化速率和动态度3个指标来看：1984-1991年土地利用变化以建设用地（增幅为162．75％，下同）和乔木林地（114．70％）的快速增加，流动沙地（-37．11％）和草地（-8．30％）的减少为特点。1991-2000年，以林地（乔木林地和灌木林地增幅分别为-61．43％和-88．47％）大幅减少，流动沙地（102．28％）和草地（17．45％）大幅增加为特点。从空间稳定性看，草地（未变化比例为66．71％-77．05％，下同）和水体（50％左右）最稳定，耕地（基本在30％左右）次之，其他类型稳定性较差。草地和水体的空间位移较小，而建设用地、乔木林地、灌木林地及流动沙地的空间位移较显著。
In this paper, a case study on land use change in Ejinhollo Banner, a semiarid farming-pasturing ecotone in Inner Mongolia Autonomous Region, is carried out. The maps of land use in the banner in 1984, 1991 and 2000 at scale of 1 ： 100 000 and the map of landscape divisions are used in the study. Based on the quantitative index system, the spatiotemporal change of land use patterns and its regional differences are analyzed. The results show that the grasslands are the main land use type in the district, and the area of grasslands occupies 59.03%-69.33% of total area. Viewing from the change extent, annual change rate and dynamic change of land use types, the areas of building lands and woodlands were enlarged by 162.75% and 114.70%, but that of mobile sandlands and grasslands were reduced by 37.11% and 8.30 %, respectively during the period of 1984 - 1991. During the period of 1991 - 2000, however, the areas of woodlands and shrubbery lands were reduced by 61.43% and 88.47%, whereas that of mobile sandlands and grasslands were enlarged by 102.28% and 17.45 %, respectively. Viewing from the spatial stability, the grasslands and waters were the most stable, their unchanged proportions were 66.71% -77.05 % and about 50 % respectively, then croplands （about 30 % ）, and the stability of other land use types was poor. The spatial change of grasslands and waters was not so significant, but that of building lands, woodlands, shrubbery lands and mobile sandlands was significant.
出处
《干旱区研究》
CSCD
北大核心
2007年第2期159-167,共9页
Arid Zone Research
关键词
土地利用
农牧交错区
区域差异
伊金霍洛旗
内蒙古
land use change
semiarid area
farming-pasturing ecotone
regional difference.
