摘要
采用定量方法对关中-天水经济区农田主要农作物小麦、玉米、蔬菜生态系统服务功能进行研究,并对关中-天水经济区农田生态系统服务功能正效益的经济价值进行评价。结果表明,2001～2009年关中-天水经济区农田生态系统服务功能总价值呈上升趋势,2009年达到最大值6 156 196万元。在小麦、玉米和蔬菜3种农田作物中,小麦在各服务功能价值中占的比重最大,并呈下降趋势,而玉米和蔬菜各项服务功能价值都呈上升态势。在各服务功能价值中,每年固碳价值最高,占关中-天水经济区农田生态系统服务功能的58%～67%,土壤保持价值最低。该研究为后期调节农田结构提供了依据,能促进关中-天水经济区农业发展。
By using quantitative method,the eco-system service function of main agriculture crops wheat,maize and vegetable in Guanzhong-Tianshui Economic Zone were studied,the economic value of positive benefit was evaluated.The results showed that from 2001 to 2009,the total value of Guanzhong-Tianshui Economic Zone farmland ecosystem services indicated an upward trend,and the total value was up to 61.561 96 billion yuan in 2009.In the three field crops of wheat,corn and vegetables,wheat accounted for the largest proportion of the value of the various service features and showed the downward trend,in the functional value of corn and vegetables,various services values were rising.In the various service functions,carbon sequestration contributes the highest value every year,for 58%-67%;soil conservation value is the minimum,which can provide the basis for later adjustment of farmland structure and promote the agricultural development of Guanzhong-Tianshui Economic Zone.
出处
《安徽农业科学》
CAS
2013年第5期2201-2204,共4页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(41001388
41071057)
陕西省科技计划项目(2012JM5011)
关键词
农田生态系统
服务功能
时空差异
关中-天水经济区
Field ecosystem
Service functions
Spatial and temporal differences
Guanzhong-Tianshui Economic Zone
