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出 处:《环境科学学报》2015年第8期2633-2640,共8页Acta Scientiae Circumstantiae
基 金:水体污染控制与治理科技重大专项-辽河源头区水污染综合治理技术及示范研究课题(No.2012ZX072009)~~
摘 要:基于1989年和2012年Landsat TM/ETM遥感影像解译数据研究了吉林省辽河流域土地利用变化特征,应用Constanza生态系统服务价值计算方法,估算了23a间研究区生态系统服务价值,分析土地利用变化对生态系统服务价值的影响.研究结果表明,1989—2012年辽河流域土地利用/植被覆盖发生了大幅变化,耕地、居民用地分别增加20.28%和7.09%,其增加值主要来自林地、草地、水域和湿地;生态系统服务价值整体呈下降的趋势,由125.30亿元降至114.41亿元,损失10.89亿元,动态度为-0.38%;其中双辽市损失最为严重,损失率达21.41%;耕地的开发导致湿地和水域退化,是生态系统服务价值下降的主要因素.Based on 1989 and 2012 Landsat TM / ETM remote sensing image interpretation data,the characteristics of land use change of Liaohe River basin in Jilin Province were extracted and analyzed. Constanza's ecosystem service value theory was used to estimate ecosystem service value and further analyze the effects of land use change on that. The results showed that there were great changes in Liaohe River during the period of 1989 —2012. Arable land and urban land increased by 20. 28% and 7. 09%,respectively,and was mainly changed from woodland,grassland,water and wetland. The ecosystem service value decreased from 125. 30 billion to 114. 41 billion,and the average annual lost rate was 0. 38%. Shuangliao suffered the largest loss,with the lost rate of 21. 41%. Degradation of wetland and water resulted from the development of arable land was considered as the major factor of the decrease of ecosystem services value.
分 类 号:X171[环境科学与工程—环境科学]
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