[1]佘光辉,林国忠,温小荣.森林资源二类调查 改进方法及验证分析[J].南京林业大学学报(自然科学版),2009,33(01):124-126.[doi:10.3969/j.jssn.1000-2006.2009.01.026]
 SHE Guang hui,LIN guo zhong,WEN Xiao rong.Analysis and verification on improvement of forest inventory method for management plan[J].Journal of Nanjing Forestry University(Natural Science Edition),2009,33(01):124-126.[doi:10.3969/j.jssn.1000-2006.2009.01.026]
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森林资源二类调查 改进方法及验证分析
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
33
期数:
2009年01期
页码:
124-126
栏目:
森林资源监测理论与方法研究专栏
出版日期:
2009-01-30

文章信息/Info

Title:
Analysis and verification on improvement of forest inventory method for management plan
作者:
佘光辉林国忠温小荣
南京林业大学森林资源与环境学院,江苏 南京210037
Author(s):
SHE GuanghuiLIN guozhongWEN Xiaorong
College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China
关键词:
森林资源二类调查小班树冠投影和角规测树不等概抽样
Keywords:
By using sampling method of subcompartment that is sampling Probability Proportional to Size(PPS) the volume of subcompartment had been estimated. In order to raise the precision of estimation the auxiliary factor of the sampling subcompartment m
分类号:
S757
DOI:
10.3969/j.jssn.1000-2006.2009.01.026
文献标志码:
A
摘要:
为了提高森林资源二类调查抽样估计的精度与效率,以广西西南部部分连续清查 的资料及相应的小班调查数据为验证总体,将小班的各种测度及组合作为辅助因子进行了抽样试验。结果表明,采用辅助因子的类型不仅要考虑 其相关性提高抽样的精度,而且要考虑小班调查的目测性。笔者选用小班面积×小班郁闭度(即小班树冠投影和),将其作为不等概抽样辅助因子 进行了小班类型抽样。验证总体2000年、2005年小班总体蓄积估计量分别为3785580、4162119m3,估计精度分别为69%、78%。两期的角规 保留木断面积生长量为98020m2,小班总体蓄积生长量为530020m3,与2000年期的蓄积估计量累加得到2005年的蓄积估计量为4315600m3,落 在2005年总体蓄积估计区间(3786341,4537897)内。
Abstract:
By using sampling method of subcompartment that is sampling Probability Proportional to Size(PPS), the volume of subcompartment had been estimated. In order to raise the precision of estimation, the auxiliary factor of the sampling subcompartment must be selected, which related closer to the sampling volume. In other hand the auxiliary factor was required to be measured easily and best to be as basic factor of subcompartment such as the subcompartment volume and the forest crown coverage in the earlier term etc. In this paper the multiplication of sub compartment area with the percentage of forest crown coverage were used as the auxiliary factor of sampling subcompartment. It also was be explained as the area of the trees crown coverage in subcompartment.The results showed that the estimation of volume was 3785580m3 in the year of 2000, and 4162119m3 in the year of 2005. The estimated precision was 69% and 78% respectively, only 32 sampling units had been used. The estimation of volume growth was 530020m3. Added it with the volume in the year of 2000, another estimation of volume was 4315600m3 in the year of 2005, witch was among the estimated range (3786341, 4537897) in the year of 2005.

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备注/Memo

备注/Memo:
收稿日期:2008-12-20修回日期:2009-01-04 基金项目:国家自然科学基金资助项目(30571491) 作者简介:佘光辉(1953—),教授,研究方向为森林资源动态监测。Email:ghsh@njfu.com.cn 引文格式:佘光辉,林国忠,温小荣.森林资源二类调查改进方法及验证分析[J].南京林业大学学报:自然科学版,2009,33(1):124126.
更新日期/Last Update: 2009-05-06