中国生态农业学报2016，Vol.24Issue(12)：1703-1713,11.DOI:10.13930/j.cnki.cjea.160206
基于能值的专业化茶叶种植农业生态系统分析--以福建省安溪县为例
Emergy-based agricultural ecosystem analysis for specialized tea planting：A case study of Anxi County, Fujian Province
摘要
Abstract
Inpacewith sustainable growth of tea drinking habit prevalent in the world today, the scale of tea plantation which is traditional agriculture activity in China, has been rapidly expanding. Accordingly, a mainly market-driven factor is the economic benefit of tea, but the effect of planting tea on the eco-environment has been easily ignored. In this paper, the specialized tea planting region of Anxi County in Fujian Province was used as a case study to grade the specialization of tea planting among towns. A total of 5 levels of tea planting specialization (high, sub-high, middle, low and no tea planting) were graded with the integration of 3 indices (tea planting area, location quotient and coefficient of concentration) in the study. Based on emergy theory and method, emergy investment and output indices were calculated and 8 emergy evaluation indices were used to analyze agricultural ecosystems at different specialized levels of tea planting. The study showed that: (1) the operation of Anxi’s specialized tea planting agricultural ecosystem was given priority to renewable environmental resources. The environmental contribution ratio for different specialized levels of tea planting was 0.96–0.99 while the emergy investment ratio was only 0.01–0.04. (2) A positive correlation existed between the density of emergy yield and specialized levels of tea planting. Agricultural ecosystem productivity improved with increasing specialized level of tea planting. Then thedensity of emergy output ofhigh specialization tea planting was 4.15E+11 sej·m-2, which was 1.32 times that of specialized level of no tea planting. (3) Specialized tea planting agricultural ecosystem had high production efficiency and economic benefit, with a positive correlation between emergy yield ratio and specialized level of tea planting. The emergy yield ratio of tea planting and high specialization was 1.29, which was 2.86 times that of specialized level of no tea planting. The environmental load ratio of each specialized level was 0.05, indicating that its environmental friendly nature. (4) Specialized tea planting reduced agricultural ecosystem stability and there was a negative correlation between system stability index and specialized level of tea planting. The system stability index of specialized level of no tea planting was 1.12, which was 1.56 times that of high specialization level. The corresponding countermeasures and suggestions based on the results were therefore as follows: (1) there was the need for compound ecological tea garden construction to focus on improving the biodiversity and stability of tea planting agricultural ecosystems with increasing specialization. (2) It was necessary to pay more attention on the management and technical aspects of agricultural production for well-coordinated and sustainable development of tea productivity capacity in the study area.关键词
茶叶/专业化种植水平/农业生态系统/能值/安溪县Key words
Tea/Specialized planting level/Agricultural ecosystem/Emergy/Anxi County分类
农业科技引用本文复制引用
税伟,陈毅萍,苏正安,范水生..基于能值的专业化茶叶种植农业生态系统分析--以福建省安溪县为例[J].中国生态农业学报,2016,24(12):1703-1713,11.基金项目
国家社会科学基金项目(12CJL063)资助 （12CJL063）
