agro-ecological system 第1页

Coupling analysis of agro-ecolomic system in gully area of Loess Plateau in 1949-2008: A case study in Changwu County of Shaanxi Province. Review of emergy theory applied in agro-ecological economic system in China Successful modes of forest-grassland enlargement in northern area of China and ecological bases for their incorporation in grassland agro-ecological systems Study on the rational structure of agro-ecological system in Suide Experimental Base Study on the potassium characteristic of rendzina soil in the sub-tropic Karst of Guangxi