Study on the Impact of Urbanization in Grain Functional Zones on the Ecological Net Value of Rice Fields
Based on the data of rice field ecosystem in 30 provinces in China from 2010 to 2019,panel regression was used to ana-lyze the impact of urbanization in each grain functional area on the net ecological value of rice field.The results showed that urban-ization had a significant positive effect on the ecological net value of paddy fields in the main grain-producing area,the production-marketing balance area and the main grain-selling area,and urbanization had a significant single threshold effect on the ecological net value of paddy fields in the main grain-selling area.Considering the difference of impacts of urbanization on the net ecological value of rice fields,this paper put forward some policy suggestions on sustainable protection of rice field ecosystem and food securi-ty according to local conditions.
urbanizationrice fieldsecological net valueecosystemthreshold effect
万方数据
维普
