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资源依赖视域下荒漠化地区农户耕地利用效率差异及影响因素研究——基于南疆四地州农户调查数据
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作者 罗万云 戎铭倩 郭世豪 《中国沙漠》 CSCD 北大核心 2024年第5期105-115,共11页
本文构建了不同经营规模农户的耕地投入产出的解释框架,运用南疆四地州荒漠化外围的农户调查数据,通过非期望产出的超效率模型(Super-SBM)与Tobit模型分析农户耕地利用效率及影响因素。结果表明:(1)荒漠化地区农户在耕地投入产出上存在... 本文构建了不同经营规模农户的耕地投入产出的解释框架,运用南疆四地州荒漠化外围的农户调查数据,通过非期望产出的超效率模型(Super-SBM)与Tobit模型分析农户耕地利用效率及影响因素。结果表明:(1)荒漠化地区农户在耕地投入产出上存在显著的经营规模差异。中等规模农户的非期望产出较低,更有利于荒漠化防治;农户耕地的综合技术效率偏低,纯技术效率值仅为规模效率值的43.36%。(2)农户耕地纯技术效率值与规模效率值的概率函数曲线随着耕地面积增加呈现先增后降的趋势,纯技术效率值(1.1 hm^(2))比规模效率值更快达到峰值(4.4 hm^(2))。(3)中、大规模农户的影响因素多,中等规模农户受到耕种投入、劳动力年龄、是否雇工、民族等变量影响,大规模农户还受耕地保护偏好的影响。荒漠化防治政策需要激励外围农户耕种方式向集约化转型,注重适度规模化经营,及时评估耕地流转制度及经营方式变革对荒漠化防治的影响,大力推进数字农业技术,减少农业面源污染及地下水超采,加强劳动力的语言与技能的培训,推动荒漠外围的耕地绿色发展。 展开更多
关键词 荒漠化地区 农户耕地利用 效率差异 含非期望产出的Super-SBM模型 Tobit模型
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Impacts of Part-time Farming on Agricultural Land Use in Ecologically-vulnerable Areas in North China 被引量:6
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作者 郝海广 李秀彬 张继平 《Journal of Resources and Ecology》 CSCD 2013年第1期70-79,共10页
Part-time farming has been increasing steadily in China. It is currently the largest segment among all the farm sectors in the country. Based on rural household survey data in Taipusi County as a case site ofecologica... Part-time farming has been increasing steadily in China. It is currently the largest segment among all the farm sectors in the country. Based on rural household survey data in Taipusi County as a case site ofecologically-vulnerable areas in North China, we firstly classify farm households into four types according to the proportion of non-farm income in total income, and then compare their agricultural land use patterns to empirically examine the impacts of part-time farming on agricultural land use in this area. The results suggest that non-farming households rent out all their land and give up farming, and this satisfies the expectation of other households to expand land area. The crop planting structure was not significantly different among the households, which reflected the farmers' will to pursuit labor productivity. Part-time farming households invest more capital and materials than full-time faming households because the income derived from non-farm employment relaxes the financial constraint of households. However, the amount of labor input of part-time farming households tends to be less, and farming practices are dominated by the elderly, female and laborers withrelative low educations.Yields of crops and the benefit of agricultural land use incline to reduce, which suggest that the potential of land use productivity is more elastic to labor inputs than capital inputs in the study area. 展开更多
关键词 part-time farming agricultural land use rural labor 0ne-way ANOVA ecologically-vulnerableareas Taipusi County
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