Study on changes and innovations of farmland property right system in new China 并列题名：Study on changes and innovations of farmland property right system in new China System change and innovation of farmland conversion in China 并列题名：System change and innovation of farmland conversion in China Study on urban state-owned land property rights in China Tenure security and transaction of land property rights in rural China Research on the logic and innovation development of rural collective property rights system reform in China Evolution of traditional institutions of land property rights in China Study on price differentiation of farmland transfer in China 并列题名：Research on the logic and innovation development of rural collective property rights system reform in China