干旱区研究2017，Vol.34Issue(2)：403-410,8.DOI:10.13866/j.azr.2017.02.23
近35a若尔盖高原泥炭沼泽变化趋势与驱动力分析
Change Trend and Driving Force of Peatlands in the Zoige Plateau in Recent 35 Years
摘要
Abstract
The four distribution maps of peatlands were extracted by principal component analysis based on remote sensing of Landsat series in 1977,1994,2007 and 2013 in the Zoige Plateau,and the distribution and change trend of peatlands in recent 35 years were analyzed.The resuhs revealed that the distribution area of peatlands was holistically in a reduction trend,the area was reduced from 1 997.08 km2 in 1977 to 1 358.66 km2 in 2013,and the reduction was 31.97％.The degradation of peatlands was slow at first,then sped up,and the peatlands were gradually restored.The degradation peak of peatlands occurred during the period from 1994 to 2007,and the degradation rate was 29.1 km2 · a-1 There was a regional difference of degradation mode of peatlands,sandification was dominant in the northwest,and meadow was the main mode in the southeast.关键词
泥炭沼泽/时空变化/变化趋势/驱动力/若尔盖高原Key words
peatlands/spatiotemporal variation/variation trend/driving force/the Zoige Plateau引用本文复制引用
王云川,易桂花,张廷斌,别小娟,王继斌,孙姣姣..近35a若尔盖高原泥炭沼泽变化趋势与驱动力分析[J].干旱区研究,2017,34(2):403-410,8.基金项目
国家科技支撑项目“重点领域气候变化影响与风险评估技术研发与应用”(2012BAC19B05) （2012BAC19B05）
