Trends of technical changes in rice-based farming systems in Southern China: Case study of Qianjiang municipality

This is the second of a series of four articles aimed at providing a genera l analysis of the dynamic of rural intensification in China in view of sust ainability, with a particular focus on the area considered in our project. Data provided in this article confirms the analysis given in the previous a rticle about global trends for agricultural changes. In the last decades, t he agricultural sector of the Hubei province managed to cope with the drama tic increase in demographic pressure by increasing more than proportionally agricultural yields. This was paid for in terms of higher environmental st ress and higher reliance on external inputs. The challenge for future decades will refer to the need of matching an incr easing socioeconomic pressure (=boosting the productivity of labor of farme rs to get them a higher income and to make available surplus of food for th e growing urban population) while limiting the environmental loading genera ted by agriculture. Data describing the evolution of cropping patterns, pro duction techniques, mix and intensity of inputs used in production in the l ast decades seem to indicate that this would represent a formidable challen ge. The nature of this challenge implies that the entire Chinese society mu st be involved in order to negotiate viable compromises between the need of : guaranteeing food security for China; raising the standard of living for rural populations; preserving natural resources and ecological systems for future generations.