样点

并在此基础之上，利用GPS掌上电脑进行采样点定位，在野外53个观测点采集530个土壤样品，进行了样点均匀分布设计、检验和观测值正态分布检验。

In this work , 530 soil samples at 53 sites located by GPS Personal Digital Assistant ( PDA ) were tested for the uniformity variations of the sampling point distribution in Beijing , China . The normal distribution test on the observation values of the soil samples was made .

在研究范围内取一个样点测定土壤水分含量即能达到一般精度要求；

In the reserch range , the soil moisture content measured with 1 sampling point may achieve accuracy generally .

基于最短路径和样点插值的城市基准地价GIS系统

Reference Land-Value GIS System Based on Shortest Path and Sample Point

Ni有14个超标样点，超标率为3.2%；

Ni in 14 points had exceed the standard level and the rate of excess was 3.2 % .

3.0软件，数据量化使用总信号强度模式和信号中位值模式，总信号模式输出的样点信号强度与背景之比为SNR。

3.0 . Signal-to-noise ratio ( SNR ) was total signal intensity of sample to background value .

其中Cr、Ni分别有一个样点超过国家土壤质量二级标准外，其余样点都不超标；

Among of them , only in one sampling site , the contents of the Cr and Ni were above national secondary soil quality .

对不同采样密度下K值空间估值精度的评价表明，当采样点数目均匀地减少一半时，即4个/km2的样点密度下，K值估计误差仍然可以控制在25%以内。

The relative error of K values is less than 25 % when half of the total samples , 4 samples per square kilometer , are taken .

728算法0.156dB.同时，用BP神经网络算法评价了16和20样点激励矢量增益滤波器，效果同样很好。

728.It is also used to evaluate the case that excitation vector is 16 and 20 samples respectively , the BP neural network algorithm has similarly good result .

并用全球不同地区各种植被类型的19个NPP观测样点数据校准模型。

The estimated NPP for different vegetation types at 19 sites are validated with the observed .

大部分样点土壤中可能有新的DDTs污染物的输入。

May be there was newly added DDTs in the soil of selected sites .

结论以空间数据库为基础的GIS及其空间分析能根据HFRS样点信息很好地预测各主要疫区的分型特征。

Conclusion Through employment of spatial analysis technique based on GIS databases , the HFRS types of main epidemic area in China could be well predicted by surveillance data .

然后运用回归分析和灰色动态预测GM（1,1）模型分析了样点主要地类变化的驱动力，并进行了预测。

With the help of Linear Regression Model and Grey Trend Prediction Model GM ( 1,1 ), it analyzes the social driving forces and makes some predictions of primary land use types .

基于OKR估值的SOC空间分布图与基于全部72个样点进行的OK估值的结果具有高度的相似性。

The distribution maps of SOC obtained with OKR were highly similar to that with OK using the whole data set of72 samples .

市郊菜园土壤受Zn、Cd污染，其中以Cd污染较为突出，超标样点占全部样点的38.6%，Zn为10.5%。

The vegetable garden soils have been polluted by Zn and Cd . Cd pollution was critical , and rate of exceeding standard of Cd and Zn was 38.6 % and 10.5 % , respectively .

对全国678个样点统一选用15个生态因子，包括地理坐标（X）3个变量，气象因子（Y）12个变量。

At each of 678 sampling locations in China , 15 ecological factors , including 3 geographical factors ( x ) and 12 climatic factors ( y ), were selected and subjected to the canonical analysis ( CA ) .

在采样密度大于Nyquist率2.135倍的条件下，截断误差的上界随着样点个数的增加呈指数衰减；

Furthermore , if the density of sampling points is more than 2.135 times of Nyquist rate , the upper limit of truncation error decreases exponentially .

每个样点测量11个与底栖动物分布密切相关的环境因子：溪流的宽度，深度，流速，电导率，溶氧，pH，温度，海拔，经度，纬度和底质。

Eleven environmental variable that related to the distribution of benthic macroinvertebrate : stream wet width , depth , velocity , conductivity , DO , pH , water temperature , altitude , longitude , latitude and substratum were measured at each sampling site .

本文采用全球定位系统（GPS）采集了横断山北部高山区35个样点43个土样，用稀释平板法对该区细菌、真菌和放线菌进行了分离计数。

43 soil samples of 35 plots , located by GPS ( Global Position System ), were collected from the region of northern alp of Hengduan Mountains of Qinghai-Xizang Plateau . Quantities of fungi , bacteria and actinomycetes were determined with the dilution plate technique .

利用BIOME-BGC模型模拟了当前气候和CO2浓度条件下四个研究样点净初级生产力（NPP）特征。

Using the BIOME-BGC model , we simulated the net primary productivity ( NPP ) of Picea schrenkiana forests in the four study sites under the current climatic conditions .

PCA排序图能够定量直观地反映出样点、杂草在6种重金属元素组成上的相似性，也反映出元素组成差异所形成的杂草生态类群与局部区域土壤元素差异的对应性。

PCA ordination plot could directly reveal the similarities of the element contents in sites and weeds , and also reveal the correspondence of the ecological groups of weeds in relation to the concentration of elements in sites .

应用经典统计学方法，分析了东北黑土表层1100个样点的土壤有机碳（SOC）和全氮空间分布规律。

Based on the classical statistic method , the spatial distribution of soil organic carbon ( SOC ) and total nitrogen ( TN ) of 1100 surface samples in the Mollisol area of the Northeast of China was investigated .

运用地统计学、Kriging插值理论，对样点数据进行分析，确定不同土壤养分指标的空间变异特征，确定合理的取样个数。

Using geo-statistics and kriging interpolation , analyzing data of sample point , we educed spatial variability character of soil nutrient index , and made certain rational number of sampling points . 4 .

根据成都平原区117个样点的调查资料，采用GIS与地统计学结合的方法，研究成都平原土壤磷素及其影响因素，包括土壤颗粒组成、有机质和pH值等土壤性质的空间变异特性。

Based on the survey data of 117 sampling points in Chengdu Plain , the spatial variability of soil phosphorus and its influential factors , including soil particle composition , organic matter , and pH were studied by coupling geographic information system ( G1S ) with geostatistics .

结果表明，在（2×CO2）条件下，灌溉小麦的模拟产量在所有样点都增加了，但随着气候变率的增大，增产幅度减小，产量变异系数增大，稳产性变差；

The results show that the simulated yields of irrigated wheat increase at all sites . With increasing of the climatic variability , the yield increase amplitude would be reduced , the variation coefficient of the yields and their instability would also increase .

灰色关联方法反映了对样点代表区域环境质量影响最大的是土壤中的总磷以及地表水中的总氮，其次是As，Cd，Pb，Zn以及土壤中的COD。

The grey correlation analysis can reflect that environmental quality of the sample points representing area has the greatest impact on total nitrogen in soil and total phosphorus in surface water , the second are As , Cd , Zn and COD in soil .

结合DDE技术，实现软件平台之间的通讯，从而实现了对高速公路工程地质样点分析信息的图像查询。

Combing with DDE technology , the system realize communicating between two soft wares . As a result , the system realize image query on engineering geological information of sampling spot of the expressway .

实验中得到了市区五个样点（ST、LD、QL、AN和XG）的树轮年表，其中LD、OL和AN三点树轮年表质量较好。

Five chronologies , three of which ( LD , QL and AN ) have acceptable quality , were obtained from five sites in Lanzhou City , including ST , LD , QL , AN and XG .

测定了中国中东部地区17种土类45个样点近表层10cm土样中水溶性有机物的紫外光谱和分子量分布特征，同时测定部分样品富里酸的相应特征。

Summary UV VIS spectroscopy and molecular size distribution of water soluble organic carbon ( WSOC ) of 45 soil samples collected from the eastern part of China were determined .

但11个样点的DDTs含量介于ERL和ERM之间，表明其生态风险大多介于10%~50%。

However , the contents of DDTs in eleven sediment samples were between ERL and ERM , showing the ecological risks for most reservoirs and lakes were between 10 % and 50 % .

把格网样点提取的森林景观类型和DEM相叠加，在空间尺度上描述各森林景观的分布格局、地理位置或相对位置，在此基础上，对各景观要素在进行空间格局趋势分析。

The forest landscape type extracted by the grid sample and DEM was overlay , which could described the distribution pattern , geography and relative location of forest landscape in spatial scale . According to that results , the landscape element was analysed by using spatial pattern trend surface analysis .