赣南地区农业生态经济系统耦合态势的时空演变

赣南地区地处南方丘陵山地区域，是重要的生态功能区，其农业经济发展与生态功能保护的关系备受关注。促进农业生态经济系统的耦合协调发展，是赣南地区可持续发展的重要内容。利用2000-2015年赣州市各县（市）统计年鉴数据及遥感数据，构建了基于耦合协调度模型的区域农业生态经济系统的评价指标体系，开展时间和空间尺度上的农业生态经济系统的耦合协调发展研究。结果表明：（1）在时间尺度上，农业生态系统变化不大，在空间尺度上县（市）之间因自然条件的不同略有差异；农业经济综合评价值在2000-2015年之间有较大的增长，且不同县（市）间存在差异，农业经济系统的相对滞后是限制农业生态经济系统不能协同发展的原因。（2）耦合度和耦合协调度随时间而增长，大部分县（市）的耦合度经历了从中度耦合、高度耦合、再到极度耦合的过程，其中极度耦合的占比从2000年的0%提升到2015年的94%；耦合协调度从基本、中度协调耦合到中度、高度协调耦合，且都呈现以赣县、于都县、兴国县为主的中部较低，而南北部较高的态势。（3）2010年前，大部分县（市）的农业生态经济系统发展类型长期处于农业经济极度滞后状态，随后逐步向农业经济严重滞后过渡。农业生态经济系统耦合态势的分析有助于明晰当地的农业生态经济系统的发展、演变规律，促进农业系统的协调发展。

Temporal and spatial evolution analysis of the coupling situation of agricultural eco-economic system in Gannan region

Gannan region, located in a typical hilly and mountainous area, is the state for the construction of ecological environment focused on one area. To balance the development of agricultural economic and ecological function protection, and pursues comprehensive and sustainable development, the multiple relationship between them was investigated in this paper. We proposed an agri-ecological economic index system (based on the coupling coordination degree model) to analysis coordinated development in gannan region. All the data was from 2000-2015 statistical yearbook and satellite remote sensing. The results show that:(1) the agri-ecosystem show a slightly differ between different spatial (natural conditions) except times. From 2000 to 2015, the comprehensive evaluation value of agricultural economy growth a lot with a certain spatial variation. (2) Coupling degree and coupling coordination degree increased with time, e.g. the proportion of extreme coupling increased from 0% (2000) to 94% (2015). Most counties (cities) was moderate coupling initial and growths to extreme coupling in 2015. Besides, coupling coordination degree was changed from moderate to high coupling coordination degree. In addition, a low-lying region is exhibited in middle of the study area (e.g. Yudu County, Xingguo County), and high-lying region is in northern. (3) Before 2010, most counties (cities) was in an extreme lag agricultural economy condition for a long period, meanwhile, transferring smoothly to a serious lag agricultural economy condition. The analysis of the coupling situation of agri-ecological economic system could expand our acknowledge of the development condition, evolution law of agri-ecological economic system, and promote the coordinated development of agricultural system in regions.