水土保持技术对农业产业-资源系统的耦合路径分析

水土保持技术通过对农业产业-资源系统的作用过程影响系统的耦合效果,这一过程及效果成为农户选择水土保持技术的关键点。为此,运用结构方程模型,以典型流域—县南沟流域为对象,通过对2017年130户农户调研资料的分析,揭示其作用过程和耦合路径,结果表明:水土保持技术与生态环境、农业资源、农业产业形成了一个新的耦合系统,水土保持技术对生态环境的改良和农业资源量的增加具有促进作用,对农业产业的发展具有抑制作用。但其(现阶段)作用强度较弱,(水土保持技术对三者的路径系数分别为0.13、0.08、-0.02);这是由于县南沟流域基本完成了规模化治理,故水土保持技术对农业产业-资源系统的影响的弱强度是基于水土流失治理及治理措施有效发挥基础之上的弱强度,同时隐含了现有的水土保持技术体系已不能完全满足新时代背景下生态文明建设与经济发展的需求,需要围绕水土保持内涵经营过程,以生态功能的提升为主线,筛选、集成、研发水土保持技术,形成可适化水土保持技术体系。

Coupling path analysis of soil and water conservation technology to the agricultural industry-resource system

Soil and water conservation technology influenced the coupling effect of the system through action on the agricultural industrial-resource system, and this process and effect is the key determinant among farmers to select appropriate soil and water conservation technology. Hence, we surveyed 130 households of the typical watershed-Xiannangou watershed in 2017, and these survey data were used to reveal the mechanism of action and the coupling path via the structural equation model. A new coupling system was developed from soil and water conservation technology and the ecological environment, agriculture resources, and agricultural industries. Soil and water conservation technology improved the ecological environment, increased agricultural resources, and inhibited the development of the agricultural industry; however, the intensity was weak at the present stage (the path coefficients were 0.13, 0.08, and -0.02, respectively). The underlying reason was that large-scale management was undertaken in the Xiannangou watershed; hence, the weak intensity of the effect of soil and water conservation technology to the agricultural industry-resource system was based on the weak intensity of the effective control measures for soil and water loss in the Xiannangou watershed, implying that the existing system of soil and water conservation technology could not fully meet the requirements of ecological civil construction and economic development in the new era. Screening, integrating, and developing soil and water conservation technology to develop suitable soil and water conservation technology is in great demand and must focus on soil and water conservation, while essentially upgrading ecological functions.