为持续监测市县两级森林资源变化,探索森林资源一体化监测方法,建立设区市森林资源市县联动年度化监测体系,以杭州市为实践地,采用样地监测、档案更新、补充调查、复位调查、模型更新、马尔科夫转移模型、线性回归等方法,在时间序上分为基础年和一般年,空间序上分为1个市总体和8个县域副总体,分别评价指标、样点布设、信息采集、数据处理、质量控制、信息发布6个任务系统建立监测体系,从2008—2012年,连续5年对杭州市及各县域副总体森林资源开展了年度监测与公告。结果表明:通过市县联动年度化监测,杭州市及各县副总体能实现森林资源同步监测,实现市县“一体化”监测和市县“一套数”,监测结果有较好抽样精度控制,成果公告后取得了较大社会反响。因此,建立的设区市森林资源市县联动年度化监测体系,能满足市县两级政府决策及公众信息需求,可为全国森林资源“一体化”监测提供借鉴。

For continuous monitoring of the changes of forest resources at both municipal and county levels and the exploration of methodology in integrated monitoring of forest resources,an integrated monitoring system of forest resources was built for Hangzhou by the application of permanent sample plot monitoring,archive updating,supplementary investigations,re-measured investigations and model projections,Markov transition model estimation,linear regression estimation and other monitoring methods.The time sequence is divided into basic and general years,and the spatial sequence is divided into one city collectivity and eight County Sub-collectivities.A monitoring system is establisged which includes 6 task systems as the evaluation index,sampling points,information collection,data processing,quality control,information release to carry out the annual monitoring and information announcement of forest resources from 2008 to 2012.With the city-county synchronized monitoring system of forest resources,synchronous monitoring of forest resources is realized integrated monitoring of forest resources of city and county and a set of integrated data of city and county achieved.The monitoring results have good sampling accuracy control,results after the announcement made great social repercussions.Therefore,to establish a system of annual city-county synchronized monitoring system of forest resources can meet the needs of government decision making at the two levels and information requirement of the public,and provide a reference for the integration of national forest resources monitoring.