Quantity and quality balance of farmland in Hubei Province in the context of 'compensation for comprehensive occupation' and its impact on grain production capacity
Safeguarding the 'double red lines' of farmland quantity and quality and integrating various types of farmland occupation into the overall compensation management,extending 'compensation for built-up land occupation' to 'compensation for comprehensive occupation,' represents a milestone reform in China's farmland compensation system and is crucial for national food security and sus-tainable development.This study developed a theoretical framework to reveal the balance of farmland in both quantity and quality di-mensions under the 'compensation for comprehensive occupation' policy and its impact on grain production capacity.Hubei Province was used as the study area to conduct empirical analysis using mathematical statistics and spatial analysis methods.The results showed that from 2015 to 2020:① In terms of quantity,paddy fields had the highest proportion of occupation among the three subtypes of farm-land.The non-grain use of farmland surpassed the non-agriculture use of farmland,becoming the main cause of farmland occupation.In terms of quality,across the three classification dimensions of nature,utilization,and economy,the occupation of superior and higher-quality farmland accounted for more than 75％ of the total,indicating a problem of large occupation of high-quality farmland.②'Com-pensation for built-up land occupation' achieved balance,but 'compensation for comprehensive occupation' failed.In terms of quanti-ty,the gap between compensated and occupied farmland was 1298.60 hectares,with the phenomenon of replacing paddy fields with dry land.In terms of quality,superior farmland did not achieve compensation balance across all three quality dimensions.③ Compared to the centroid of occupied farmland,the centroid of compensated farmland shifted towards the northwest,characterized by steeper slopes and higher elevations,indicating a risk of marginal land use.④ The 'quantity-quality' integrated perspective revealed an underestima-tion of the impact of land compensation on grain production capacity when viewed solely from the 'quantity' perspective.The grain pro-duction capacity loss in the former was 660.62 tons more than in the latter,reaching 4302.27 tons.Thus,this study suggests enhancing the management of non-grain use of farmland,ensuring sufficient quantity and guaranteed quality of reserve farmland,and implement-ing a mechanism that enforces balance between occupied and compensated farmland.These measures aim to promote the implementa-tion of balanced 'quantity-quality' compensation for farmland in the context of 'comprehensive compensation for occupation.'
'compensation for comprehensive occupation'occupation-compensation balance of farmlandquantityqualitygrain production capacity
万方数据
