摘要
Reasonable degree of the landscape pattern spatial distribution directly influences the sustainable use of regional land resources. Aiming at the unreasonable distribution of agricultural ecological landscape pattern, the deterioration of ecological environment, the Cellular Automaton (CA) principles were used to establish the optimized rules, such as landscape suitability rules, landscape prior rules and restraint conditions; and the standardization of the spatial data was realized by the competence of GIS spatial data handling and data spatial analysis, and finally, landscape pattern spatial optimization model was established with the support of MATLAB platform, i.e. LPSO Model. The spatial pattern optimization of agricultural landscape in west Jilin Province has been realized, which also laid a theoretical foundation for the proper spatial distribution of landscape pattern in west Jilin Province and realizing the sustainable agricultural development.
吉林省西部属于松嫩平原的西南部,其北、西分别与黑龙江、内蒙古自治区接壤。地理坐标东经123°09’～124°22’,北纬44°57’～45°46’,东、南、西三面高,北部和中部较低,地形似簸箕状。该区处于半干旱、半湿润区的过渡带,生态环境十分脆弱,容易受到各种因素的干扰。从1989～2004年15年间,该区域耕地面积增加7.54万hm2,草地面积减少27.32万hm2,林地面积增加了10.07万hm2,但其破碎化程度增加,农业景观格局处于不合理状态,致使该区生态环境恶化严重。
