sample plot

Study on Beijing Forest Fixed Sample Plot Investigation System

北京市森林资源固定样地调查体系研究

Thus setting up a single sample plot in an area can produce some rather bewildering result.

因此,如果在某个地区内只在某单块抽样小区内采样,那末就可能得到某种较为含糊的结果.

The system include building sample plot database, logging in, editing, modifying, statistics and analyzing, comprehensive sample calculate and result output.

系统具有建立样地数据库、数据录入、编辑、修改、统计分析、样地综合计算、立地评价和结果输出等功能。

Note A sample plot of each of these theories is shown at the bottom of the Worksheet view.

注意：对其中的理论每样地显示在工作表视图底部。

Cumulation in each sample plot was a little different with the annual litter production.

各样地的蓄积量多少与年凋落量有一些差异.

By the statistical analysis method, the authors researched the growth model and cutting age of masson pine natural forest with the sample plot inventory data.

根据标准地调查资料，应用统计分析方法研究生长模型，并结合森林经营实际确定采伐年龄。

In the fixed sample plot at different habitats, the growing process of an endangered species, Adenophora lobophylla Hong population was observed.

在不同生境条件下的固定样地内，观察分析了裂叶沙参种群的地上部分在一个生长季的生长过程和物候特点。

In the process of regression diagnostics, using the method of the box plot to observe outliers, this article analyzes outliers and excludes them from the sample data and then goes through the regression test, ultimately gets the more robust regression model.

而在回归诊断过程中，本文采用箱线图的方法观察异常值，对异常值进行分析，通过剔除异常值的样本数据而进行回归检验，最终得到了更为稳健的回归模型。

Design and Development of Universal Forest Sample Plot Statistical Analysis System

通用森林样地调查统计分析系统设计与开发

MaxEnt should be used with caution because of some restrictions, including sampling area at the anchor scale, sample plot number, historical disturbance factors, evenness of species distribution and heterogeneity of sample unit.

同时，在使用最大熵方法的时候必须注意一些影响其估计精度的限制性条件，包括锚定格局上的取样面积、调查的样方数目、历史干扰因素、物种分布的均匀程度及取样的异质性。

Preliminary Report on Investigation Method of Sample Plot of Wild Flowers and Plants Resource

野生花卉资源样地调查法研究简报

The total K contents in different kinds of wetland soil ( sample plot zone) all showed Horizon A Horizon A> Horizon B and the changes of Horizon C took on fluctuation.

不同类型湿地（样地带）土壤中全K含量在剖面垂直方向上均表现为A层A层>B层，C层变化具有波动性。