中文摘要：

合理、最优的土地利用方案涉及到影响土地利用变化的诸多因素，引起了目前学术界的广泛关注与重视。本文利用CLUE—S模型的理论框架，构建了中国北方农牧交错带土地利用空间优化布局模拟模型，通过对中国北方农牧交错带土地利用变化的情景设置，实现了六种土地利用变化分配模式下的空间优化布局。研究表明，中国北方农牧交错带在不同的分配模式下，各用地类型间的竞争导致区域土地利用类型之间的转移差异较大。经过空间优化的土地利用空间分布和土地利用现状相比较，耕地和草地更加集中，从不同分配模式的空间分布比较中可以看出，进行土地利用空间分配时，土地利用变化的敏感地带位于东北部地区和西部地区，东北部地区主要表现为林地转化为耕地，在西北地区，主要是草地和耕地之间的相互转化。而在广大的中部地区，则主要是耕地转化为草地。

英文摘要：

Optimal land use planning, influenced by various factors, have been a frontier issue for LUCC studies in the world.Regarding CLUE-S model as the modeling framework,this paper designed a Land Use Change space optimizing simulation model and realized the optimal space distribution under six different scenarios.The findings are concluded that the difference of land use change is remarkable. Comparing optimal land use pattern scenario with the actuality, the cropland and grassland were concentrating. From the comparing of space distribution under different scenarios, at the space allocation process, the hotspot region was the Northeast, the Northwest and middle region. The Northeast focused on the forest land transformed to the cropland, middle region was the cropland to grassland, the Northwest was the space location changes between the cropland and grassland.