【摘要】 采用遥感解译获取白城市农田面积,结合降雨径流参数、作物估产和涵养水源量模型,对1989、1996、2000、2004和2008年农田生态系统服务功能价值进行估算,揭示了农田生态系统服务功能价值时间序列变化规律。结果表明,5个年份单位面积农田生态系统服务功能价值分别为:4 972.64、10 031.76、6 559.25、7 197.29和11 077.74元/hm2,总体呈现逐渐增加的趋势,影响农田生态系统服务功能价值变化的主要原因有旱涝灾害等自然因素以及土地开发整理项目等人为因素。更多还原

【Abstract】 By dint of remote sensing decode to get the farmland area of Baicheng City,combining with rainfall parameters,crop yield estimation and water conservation quantity models,the economic value of farmland ecosystem services in Baicheng City was estimated to reveal temporal sequence changes rules of farmland ecological system service function.Results suggested that the economic value of per hectare supplied by farmland ecosystem services was 4 972.64 yuan/hm2 in 1989,10 031.76 yuan/hm2 in 1996,6 559.25 yuan/hm2 in 2000,7 197.29 yuan/hm2 in 2004 and 11 077.74 yuan/hm2 in 2008.It was increasing in general.The main reasons for these changes were natural factors such as droughts and floods and human factors such as land development projects in Baicheng City.更多还原