China DEA model Green Transition of Cultivated Land-use (GTCL) Land Certificated Program (LCP) Nanjing Northeast China Tobit model Water-Land-Food-Carbon (WLFC) Yunnan Province Zhejiang province actor–network agricultural modernization agricultural policy appropriate tillage sand land area of land transfer balanced quota bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general bic Book Industry Communication::P Mathematics & science::PS Biology, life sciences bic Book Industry Communication::T Technology, engineering, agriculture black soil region comprehensive land consolidation consumption structure county-level coupling coordination coupling coordination degree creditor rights crop planting structure cultivated land change cultivated land multifunctionality cultivated land protection