县南沟流域农业产业-资源系统耦合过程模型的建立与分析

发布时间：2018-03-06 18:48

本文选题：农业产业—资源系统　切入点：耦合过程模型　出处：《水土保持研究》2017年05期 　论文类型：期刊论文

【摘要】：针对黄土丘陵区农业产业—资源系统演变轨迹发生变化的现实,参照农业生态经济系统耦合过程模型,建立农业产业—资源系统耦合过程模型。并对模型参数(k1,k2,k3,k4)的变化过程及其代表的生态经济意义进行重点讨论,在此基础上对县南沟流域进行了实证。结果表明:不同参数k值组合,形成了不同的农业产业—资源系统互动关系。退耕后,县南沟流域资源所依赖的环境系统的提升空间现已达到极限,产业发展未建立在对资源的合理、有效利用上。现阶段资源系统发展态势与资源系统演化速度和产业系统演化速度都成负相关,产业系统发展态势与资源系统演化速度和产业系统演化速度都成正相关。将碳汇产业融入系统后,可使资源系统演化速度提升2.56倍,若通过"轮牧+舍饲"养殖模式进一步改良,可使资源系统演化速度提升4.66倍,使得资源得到合理、高效利用,加速产业结构优化升级。
[Abstract]:In view of the fact that the evolution path of agricultural industry-resource system has changed in the loess hilly region, the coupling process model of agricultural eco-economic system is referred to. The coupling process model of agricultural industry-resource system is established, and the change process of the model parameter (k1k2k2k3k4) and its ecological and economic significance are discussed emphatically. The results show that different parameter k values combine to form different interaction between agricultural industry and resource system. The improvement space of the environmental system on which the resources of the county Nangou watershed depends has reached the limit, and the industrial development has not been established in a reasonable way to the resources. At present, the development trend of resource system is negatively correlated with the speed of evolution of resource system and the speed of evolution of industrial system. The development trend of industrial system is positively related to the speed of evolution of resource system and industrial system. After the carbon sink industry is integrated into the system, the speed of evolution of resource system can be increased by 2.56 times. If the breeding model is further improved, the evolution speed of the resource system can be increased by 4.66 times, the resources can be used reasonably and efficiently, and the industrial structure will be optimized and upgraded.
【作者单位】：中国科学院水利部水土保持研究所;中国科学院大学;西北农林科技大学;
【基金】：国家自然科学基金(41571515) 国家重点研发计划课题(2016YFC0503702) “十三五”国家重点研发计划项目(2016YFC0501707)
【分类号】：F327

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