异质性农户碳汇供给水平及其影响因素分析

Analysis of Supply Level of Crops Carbon Sinks and Its Influencing Factors of Heterogeneous Peasant Households

将农户的兼业化水平视为农户异质性的重要表现,结合实地调研的农户数据,首先对农业生产过程中的农作物碳汇供给进行测算;然后运用有序多分类Logistic回归模型分析不同兼业化水平下农户的农作物碳汇量的影响因素。结果表明:不同兼业化水平的农户在农作物碳汇供给上存在一定的差异,低兼业水平农户的户均碳汇供给量高于高兼业水平农户,且粮食作物生产为农作物碳汇供给的主要来源;在经济作物碳汇供给方面,低兼业水平农户倾向于进行草本经济作物碳汇供给,高兼业水平农户更倾向于进行木本经济作物碳汇供给。户主的个体特征、家庭特征、专业知识获取和社会关系网络特征对农作物碳汇供给产生了一定的影响,不同兼业化水平农户的共同影响因素源于实际经营的土地面积、是否接受过技术指导,家庭劳动力投入、是否使用互联网对低兼业水平农户的农作物碳汇供给产生正向显著影响,而是否加入合作社、是否经常与城里熟人联系则对高兼业水平农户的农作物碳汇供给影响更为显著。此外,非农收入与农业收入差距的持续增大会抑制农作物碳汇供给水平。

In this study,the level of farmers′integration was regarded as an important symbol of the heterogeneity of peasant households.The carbon sink supply in agricultural production was measured first using the data of field research,then,the influencing factors of crops carbon sinks under different levels of concurrent-business farmers were analyzed by using the orderly multivariate logistic regression model.The results showed that there were some differences in the supply of crops carbon sinks among different levels of concurrent-business farmers where the average household carbon sinks of low level farmers were higher than high level ones and food crop production was the main source of crops carbon sinks.In terms of economic crops carbon sinks,the low level farmers tend to generate carbon sinks from herbal economic crops,while the high level farmers were more inclined to produce the woodland economic crops carbon sinks.The individual characteristics of the owner,the characteristics of the family,the acquisition of professional knowledge and the characteristics of the social network all affect the carbon supply of crops to a certain degree.The actual land area and the technical guidance were two common factors on the supply of crops carbon sinks in different levels of concurrent-business farmers.The household labor input and the employment of the internet had significant positive impact on the supply of carbon sinks to low level farmers,whereas the participation to cooperatives and the frequency of contact with city acquaintances influence carbon sink supply of high level farmers more significantly;in addition,the increasing gap between non-agricultural and agricultural income will inhibit the supply of crops carbon sinks.