基于能值理论的北方农牧交错带种植业可持续性分析——以准格尔旗为例  

Analysis on sustainability of farming system in farming-pastoral ecotone of northern China based on emergy theory——A case study in Zhunger County

作　　者：孙特生[1,2] 李波[2] 

机构地区：[1]西北师范大学社会发展与公共管理学院,甘肃兰州730070 [2]北京师范大学资源学院/地表过程与资源生态国家重点实验室,北京100875

出　　处：《干旱地区农业研究》2013年第4期224-230,共7页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金(40871135);西北师范大学青年教师科研能力提升计划项目(NWNU-LKON-12-33)

摘　　要：运用能值理论、方法,以植被NPP为基础,评价环境资源系统对准格尔旗种植业系统的影响、贡献,揭示种植业系统的物质基础、运行效率和发展方向。研究表明:(1)环境资源,尤其可更新资源是准格尔旗种植业系统生产力的主要驱动因素。优化能值投入结构,提高环境资源的利用率、转化率,是发展准格尔旗种植业系统生产力的战略方向。(2)准格尔旗种植业系统的可持续规模、产量主要取决于环境资源提供的自然资本、生态服务。推广以木本水果、木本粮油为主体的农林复合系统,推进生态建设步伐,进而增强环境资源提供自然资本、生态服务的能力,是维持准格尔旗种植业系统可持续规模的最佳途径。(3)实施"农牧互促"的农业发展战略,提高农牧业系统耦合度及其整体生产力,尤其以种植业支撑畜牧业发展,提升农产品附加能值,是准格尔旗种植业系统的重点发展方向。The theory and methods of emergy were adopted to evaluate the impact and contribution of environmental resources to fanning system in Zhunger County based on NPP, so as to reveal the material basis, operating efficiency and development direction of farming system. The study showed： （1） Enviromnental resources, especially renewable resources were the main driving factors of farming system productivity in Zhunger County. Optimizing the emergy input structure and improving the utilization and transformation efficiency of environmental resources would be the strategic orientation to improve fanning system productivity in Zhunger County. （2） The sustainable scale and yield of farming system in Zhunger County depended mainly on natural capital and ecosystem services that were provided by environmental resources. The best way to maintain the sustainable scale of fanning system in Zhunger County would be promoting agroforestry systems including woody fruits and woody grain and oil crops, accelerating the pace of ecological construction, and thus enhancing the capacity of natural capital and ecological services supplied by environmental resources. （3） The key development direction of fanning system in Zhunger County could be implementing the strategy of farming and stock-breeding promoting mutually, improving the coupling degree and overall productivity of farming-stockbreeding system,particularly supporting the development of animal husbandry by farming, and enhancing the additional emergy value of agricuhural products.

关 键 词：能值理论 种植业系统 可持续性 环境资源 准格尔旗 

分 类 号：S181[农业科学—农业基础科学]