农牧交错带土地利用格局演变研究进展

农牧交错带作为我国农业与牧业区交汇的桥梁和纽带,其生态系统突变和变化方向的不确定性日益突出。在总结农牧交错带自然条件、存在问题和发展现状的基础上重点梳理了土地利用格局驱动力及其演变对生态过程耦合和区域生态环境的影响;基于生态化学计量学元素平衡与循环机制研究土地利用格局演变规律的研究进展,最后对目前基础理论和研究手段进行了分析和前景展望。

THE CURRENT STATUS AND PROGRESSES OF CHANGES IN LAND USE PATTERN ON AGRO-PASTORAL ECOTONE OF CHINA

As the transition zone of agriculture area and animal husbandry of China，agro-pastoral ecotone’s ecosystemmutation and change direction of uncertainty have been becoming increasingly prominent． Based on the review of the naturalconditions，existing problem and developing progress of agro-pastoral ecotone，the current status analysis was focuses on: 1)the land use pattern variation，intensity，mode and its driving force; 2) the effects of land use and structure changes of spatialdistribution in ecological processes and regional ecological environment; 3) the status and on progress interaction between soiland plant evolution process and its mechanism，based on ecological stoichiometry method． Finally，research status，progressand current deficiency of many fundamental theories and research methods are analyzed and prospect．