sample survey method

用法例句

The diversity on different spatial scales along elevation gradient in deciduous broadleaved forest in Donglingshan Mountain,Beijing,China was studied in this paper,using transect sampling and with Shannon index analysis.

本文以北京东灵山地区落叶阔叶林为对象，应用样带调查法取样，研究了空间尺度变化对群落α多样性测度的影响。

The α_diversity on different spatial scales and the fractal power_law relationship between α_diversity and sample size in coniferous broad_leaved mixed forest and evergreen broad_leaved forest at Heishiding nature reserve in Guangdong Province, were studied, using transect sampling, with species richness index and Shannon index analysis.

以广东黑石顶自然保护区森林植被演替过程为研究对象 ,采用样带调查法取样 ,研究了针阔叶混交林样带及常绿阔叶林样带上取样尺度变化对群落α多样性测度的影响 ,以及α多样性测度与取样尺度之间的分形关系。

In this paper, we use several kinds of density estimate, carry on density estimate to line transect sampling of computer simulation.

　用几种不同的密度推定法,对测线调查样本进行密度推定。

Comparative Research of Several Kinds of Methods on Density Estimate for Biological Population by Line Transect Sampling;

对于测线调查样本的生物分布密度推定的几种方法的比较研究

sample survey techniques

样本调查技术 样本调查技术

multistratum comparative panel survey

多层比较固定样本调查

The Financial Forecasting Based on the Business Cycle--Evidence from Business Investigation;

基于企业景气状况的财务预测研究——以企业调查数据为样本

one-unit relation panel survey

一单位关系固定样本调查

On Sample Rotation in City s Household Survey;

城市住户调查中的样本轮换问题研究

On Sample Rotation in Social Economics Survey;

社会经济调查中的样本轮换问题研究

Survey on Rural Households' Credit Behavior Based on Sample Counties in XinJiang

新疆样本县(市)农户借贷行为调查分析

Beijing Residents' Travel Time Survey in Small Samples

北京市居民出行时间小样本调查分析

Application of Google Earth in coastline survey

Google Earth在海岸线修测调查中的应用研究

Additional subjects were included in the sample and the total number of subjects in this survey reached 272,023.

在样本地区适当补充调查人数，本次调查总计272 023人。

A Research on the Sample Size of OD Survey and the Optimization of OD Matrix Sample;

OD调查样本容量分析及抽样OD矩阵优化研究

Calculation of Sample Size in Highway Freightage Sampling Survey;

公路货物运输抽样调查中样本量的确定

Baseline survey: A preliminary survey.

基线调查:指初步调查。

Investigation into Physical and Technical Abilities of the Frontline Police Guangzhou;

广州市一线警察体能技能训练抽样调查研究

Investigation on the infection status of geohelminthes in 10 counties(cities) of Hubei Province

湖北省土源性线虫感染情况抽样调查结果分析

The Theory of Aging Sample and Case Study;

样本老化理论与实证分析——住户调查样本轮换频率加速试点研究

Through the successive sampling and the stratified random sampling in soybean fields,114 dis- tribution samples of larvae of Plusia agnata Staudinger,Clanis bilineata(Walker),Heliothis armigera H(?)

通过分层随机与连片调查获得114个样本.