摘要
2007年龙泉市森林资源调查采用回归分析技术,在2004年全市1010个样地中系统抽取251个样地组成成对关系,用以估算总体蓄积区间。结果表明,二套样本相关关系密切,相关系数达0.9106,回归精度达94.8%,回归方程检验呈极显著性,说明调查方法可行,调查结果可靠。用此方法减少了3/4调查工作量和经费开支。
Forest resources inventory in Longquan, Zhejiang province in 2007 was conducted by regression analysis. Total growirlg stock was estimated by 251 germinate relation plots from 1010 ones investigated in 2004. The results showed that the correlation coefficient reached 0.9106, and regression precision 94.8%. Test of regression equation indicated evident significance, indicating a reliable result. Application of regression analysis in continuous forest inventory could reduce work and cost by 3/4.
出处
《浙江林业科技》
北大核心
2010年第1期85-88,共4页
Journal of Zhejiang Forestry Science and Technology
关键词
回归分析
森林调查
精度
龙泉
regression analysis
forest survey
precision
Longquan
