依据原始矢量数据计算的土地利用景观格局指数，可以在一定程度上揭示精度损失变化特征的规律和成因。
The landscape indices, calculated from the original vector data, can indicate the law of the change of the area accuracy loss.
景观格局是若干生态系统的综合体，受地貌、气候和其他外界多种因素的干扰，是模拟和预测地理要素变化趋势的基础。
Landscape pattern, which is the ecological complex and interfaced by the factors of landform, weather and etc, is the base of simulating and forecasting the mutative trend of geographical factors.
研究结果对于北京市景观格局特征和变化规律，对于城市景观生态环境的优化、土地的合理利用以及城市规划具有重要的意义。
Findings of the Beijing landscape pattern and changes in the urban landscape of the ecological environment is of great significance to the rational use of land and urban planning.
分别从景观变化的类型和位置，景观格局变化的定量描述等几个方面研究了德惠市1991～2000年的景观变化情况和总体特征。
After the analylse of Dehui agro-landscape, the changes from 1991~2000 are analysed by quantitative indexes adapting to agro-landscape.
研究区景观类型和景观格局特征随尺度增大变化显著，体现出一定的尺度依赖性；
The characteristics of landscape types and landscape patterns of the study area varied significantly with the increase in grain size, reflecting certain scale dependence.
结果表明：在研究区内景观类型特征和景观格局特征随粒度的增大出现了显著的变化；
The result demonstrates that:(1)the characteristics of landscape types and landscape pattern of the study area change significantly with the increase of grain;
结果表明：在研究区内景观类型特征和景观格局特征随粒度的增大出现了显著的变化；
The result demonstrates that:(1)the characteristics of landscape types and landscape pattern of the study area change significantly with the increase of grain;
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