摘要
土地利用格局优化有利于实现土地资源高效利用,以砒砂岩区西黑岱流域为研究对象,以侵蚀防控为目标,基于不同时期的土地利用现状图和地形图等数据,采用线性规划法和元胞自动机(CA)模型,在GIS技术的支持下,对西黑岱流域的土地利用格局变化与优化进行了研究,结果表明:研究期内耕地、林地在不断地增加,其中林地面积的增加最大,草地面积的减少幅度很大,水域面积有所减少,建设用地略有所增加。优化后耕地总面积增加了20.67hm2,林地面积明显增加至1 501.89hm2,所占比重超过了草地;而草地面积减少了157.68hm2,此次优化使得西黑岱流域土地利用结构发生明显的变化,其中林地面积在大幅度的提高,耕地、草地向高质量方向发展,通过土地优化将减少土壤侵蚀,保护当地脆弱的生态环境,提高综合生产力,同时为砒砂岩区进行土地利用格局优化调控提供依据。
The land use pattern optimization can achieve efficient use of land resources. The land use pattern change and optimization of Xiheidaigou Watershed were studied in area of Soft Rock Region based on the land use status in different periods of map and topographic map data, through using linear programming method and cellular automata model, with the support of GIS technology. The results show that cultivated land and forest land increased to different extent, the forest land increased the most, the reduction magnitude of grassland area was larger, water body and construction land area had a different degree of reduction in the study period. The total area of cultivated land increased 20. 67 hm2, forest area significantly increased to 1 501.89 hm2, grassland area decreased 157. 68 hm2 after land use pattern optimization. The optimization makes the structural changes in land use significantly. So, in oder to achieve the purpose of watershed land use pattern, it is necessary to reduce soil erosion and to improve the comprehensive land productivity, which provides the basis for optimizing the regulation of land use pattern in arsenic sandstone areas.
出处
《水土保持研究》
CSCD
北大核心
2014年第2期76-81,共6页
Research of Soil and Water Conservation
基金
国家自然科学基金(41061028)
内蒙古高等学校科研项目(NJZY13070)
关键词
土地利用
格局优化
元胞自动机
砒砂岩区
land use
pattern optimization
cellula automata model
soft rock region
