Establishment of Tea Plantations with Improved Carbon Sequestration Ecosystem for Fujian

Examples of commonly found ecological problems of the tea plantations in Fujian included low surface coverage, severe soil erosion, low solar energy utilization in aging and young tea gardens, nitrogen over-fertilization, reduced carbon sequestration potential, and declined nutrient circulation and storage.To alleviate or minimize the shortfalls, a proposal for improvements is presented.A model was constructed aiming to increase the carbon sink and reduce the carbon emission.It was hoped that a high and stable yield, low-carbon tea production in the province could be resulted.The model includes designs of a tri-dimensional ecological tea garden and a compounded biological cycle tea garden, as well as the scientific fertilization and zero tillage.It could be estimated that the model of compounded and tri-dimensional ecological tea plantation would lead to consequences of increase in bio-carbon sequestration over 3.88?105 t and in soil organic carbon storage over 12.00?105 t annually if applied to 80% area of the 20?104 hm2 tea gardens in Fujian. Moreover,the amount of organic carbon storage would also be increased about 3.88?105 t by fertilizer optimization. With the establishment of technological model in tea plantations, the CO2 emission was equivalently reduced over 5.82?105 t, which significantly improved the carbon sequestration ability of tea gardens.