基于市县联动监测的县域森林植被生物量评估

摘要

Estimation was made on reliability of forest vegetation biomass assessment of the counties in Hangzhou. Zhejiang province. A linear model between biomass and volume was established based on biomass data of sample survey in Hangzhou and provincial forest vegetation biomass assessment parameters. Biomass of each subcompartment of forest resources in the counties was estimated, and the correlation was analyzed and compared between the aggregated results and sampling results. It showed that the aggregated value was within the confidence intervals for sampling results. Assuming mat the sample survey is true value, the aggregated results were proved to be high accuracy.%为探索设区市内各县域森林植被生物量评估方法和评价结果的可靠性,以杭州市森林资源市县联动监测体系为依托,采用所辖县的森林资源规划设计调查更新小班为基础数据,利用杭州市级抽样控制样地生物量数据和已建立的省域总体森林植被生物量评估参数,研建了生物量与蓄积量的线性关系模型,评估了各县域森林资源小班的生物量,分析比较了各县域生物量汇总结果与已公布使用的市域总体抽样结果之间的吻合程度.结果表明,评估的全市各县域森林植被总生物量汇总值处于杭州市总体的抽样总值置信区间内,以抽样总值为真值,汇总结果具有较高的准确度.