基于木材供给生产目标下林农经营规模效率研究——以福建省杉木用材林为例

文章基于福建省140份林农的问卷调查数据,从木材供给生产目标出发,采用DEA方法对产出导向下的杉木生产的经营规模效率进行测算。结果表明:福建省林农经营规模效率有待进一步提高,存在资金投入和劳动投入冗余,林地产出不足等问题,并针对存在的问题提出要继续深化集体林权制度改革,合理配置生产要素投入比例,提高林农经营管理水平等建议。

福建三大林种农户经营规模效率比较分析

林业经营规模效率问题是我国林业发展亟待解决的一大难题，不同林种之间的效率问题有所差异。文章基于福建省4市340户样本林农的问卷调查，采用数据包络分析（DEA）和概率分布函数，对当前经营不同林种的农户的经营规模效率及其分布情况进行差异比较。并以此提出促进林业发展的若干建议。

省域农业经营规模效率测算及分析

经营规模效率是衡量农业经营是否有效的重要指标。基于DEA分析方法中的BCC模型和CCR模型对我国30个省份2004—2011年的农业经营规模效率及生产要素配置情况进行测算与分析,发现省域间的农业经营规模效率差异较大,生产要素投入冗余现象普遍存在。提出引导农业适度化规模经营、促使农业由传统经营向专业化经营转变的对策建议。

不同经营形式下的私有林经营规模效率研究——以福建为例

研究林业经营效率是林业经营管理与林业政策的重要议题,对不同经营形式下的私有林经营规模效率进行研究具有重要的现实意义。本文以林农的经营形式为切入点,通过对福建省三大林区的调查,运用DEA方法测算与分析了自留山经营、家庭承包经营、股份合作经营等三种形式的私有林规模经营效率,得出了总体规模效率有待提高、股份合作经营规模效率相对较高、生产要素配置不太合理等结论,最后对提升私有林林地经营规模效率提出了因地制宜,选择多形式的林地经营形式;完善林地流转制度,提高林业整体规模效率;优化资源配置,提高林业生产效率等建议。

私有林经营规模效率的影响因素——以福建杉木用材林为例

文章基于福建省4县23镇62村的问卷调查,运用DEA-Tobit两阶段分析方法对影响林农经营规模效率的关键因素进行深入剖析。研究表明,家庭劳动力数量、林地面积、地块分散性、种植年限、伐区调查设计制度、林产品销路以及林权纠纷等7个因素的影响显著,并依此论证了小规模林业经营也是有效率的。最后提出应当继续深化集体林权制度改革和完善配套改革举措。

Is Larger Scale Better? Evidence from Rice Farming in Jianghan Plain

Small-scale household agricultural production has been in conflict with China＇s agricultural modernization.In the context of vigorously promoting rural land circulation and moderate scale management nationwide,research on the relationship between farm size and scale efficiency has become increasingly important.In this paper,we use the ＂DEA-OLS＂ two stage method to analyze data from 368 surveys of rice farming households in the Jianghan Plain.The scale efficiency of rice farming was calculated,and the relationship between farm size and scale efficiency investigated.The results indicate that（1） the rice farm size is generally small in Jianghan Plain,with an average of 0.77 ha.The average scale efficiency is 0.88,and it is the main factor limiting an increase in comprehensive technical efficiency.Moreover,88.32% of households are in the stage of increasing returns to scale.（2） There is a stable inverted ＂U＂ type relationship between rice farm size and scale efficiency.Considering characteristics of the householder,the household and land quality,the maximum scale efficiency corresponds to a household with 5 ha of rice farm.（3） Among householder characteristics,age has a significant negative influence on scale efficiency,and scale efficiency is lower for a household whose householder is engaged in non-farm work than for one whose householder is devoted to farming.As for land quality,there was a significant positive effect of irrigation on scale efficiency.Among family characteristics,the application of a machine during the seeding process increased scale efficiency by 3.07%.Therefore,we suggest that local government should actively promote rural land circulation,implement a staged-scale management subsidy,and other forms of support for the purchase of agricultural machinery and technical popularization.Increased investment in irrigation improvements and mechanical facilities and encouragement of farmers to enlarge their farm size could improve scale efficiency and farming profit and lead to the development of moderate scale management.