Application of ‘closed-opened coupling’ theory in the eco-economy development of West China Assessment on the efficiency of Micropterus salmoides eco-cage culture pattern in Poyang Lake District Study on the eco-economical regionalization:a case of 6 provinces in Northwest China Study on Rational Land Use for Comprehensive Agro-development--A Case Study from Jixian County,Shanxi Province Development and difference of rural ecoeconomy in low-hill red earth areas Study on eco-economic management of typical weak ecosystem region in China A study on the patterns of development of ecoeconomic system in mountain districts