覆盖度

基于RS与GIS的北京市植被覆盖度变化研究

Study on Coverage Changes of the Vegetation in Beijing City based on RS and GIS

绝对脱附速度和表面饱和覆盖度的关系：CO／Rh

Relation between the Absolute Desorption Rate and the Surface Saturation Coverage for Co / Rh

用保土作用系数（C）衡量，仅与覆盖度有关。

The coefficient of soil conservation was only related to crop cover .

在模型中首次使用植被覆盖度fg这个遥感因子代替外野调查的郁闭度。

The vegetation covering ratio f_g is firstly used in the remote sensing biomass model .

獐的栖息地利用样方和非利用样方在植被高度、距水源距离和人为干扰距离上存在极显著差异（P＜0.01），在植被覆盖度上存在显著差异（P＜0.05）。

There were significant differences in vegetation height , distance to water resource , and distance to human disturbance between habitat and random plots .

不同覆盖度下Li原子在Si（001）表面上的吸附构型和电子结构

Geometries and Electronic Structures for the Adsorption of Li on Si ( 001 ) Surface with Different Coverages

本章还研究了溶液pH、介质、电极表面覆盖度等因素对该传感器的影响以及传感器的选择性和稳定性等。

The effect of pH , medium , coverage , other amino acids and the stability of the sensor were also studied .

基于TM数据的植被覆盖度反演

Vegetation fraction estimation based on TM data

分散度、CO覆盖度和表面碳对Rh4/Al2O3上CO吸附类型的影响

Effect of dispersion , co coverage and surface carbon on adsorption types of CO over rh_4 / al_2o_3

基于3S技术的多伦县植被覆盖度动态变化研究

Dynamic Change of Vegetation Coverage based on 3S Technology in Duolun County

基于MODIS影像的植被覆盖度提取研究

A Research on Extracting Vegetation Fraction Based on MODIS Image

基于3S技术的高寒草地植被覆盖度分布特征及动态变化研究

Research of Vegetation Coverage Distribution Changes of Alpine Grassland Based on 3S Technology

3种PAM覆盖度和对照下，降雨强度增大，侵蚀产沙量也增大。

With rain intensity increased , erosion sediment increases for 3 PAM coverage and control .

PAM覆盖度不同，坡长对侵蚀产沙过程的影响也不同。

The effect of slope length on erosion sediment is different at different PAM coverage .

典型相关分析结果，地表覆盖度与入侵植物数量两变量主要系透过第一个典型因素与第二个典型因素而影响到复层植被区之pH值、有机质等土壤理化性质。

The canonical correlation analysis showed that vegetation cover and invasion amount influenced soil properties of pH , organic matter by first and second canonical factors .

化学吸附诱导表面偏析的影响在化学吸附中不能被忽略，化学吸附能随H原子覆盖度θ的增大而减小。

The effect of chemisorption - induced surface segregation cannot be neglected in chemisorption . The chemisorption energy decreases with the increase of the hydrogen coverage θ .

且临界抗剪切应力随着PAM覆盖度的增加而增加。坡度增加，土壤的临界抗剪切应力减小。

The critical shear stresses increase when treated with PAM and increase with PAM coverage increase .

应用TM图像分析重庆南川市土壤侵蚀与植被覆盖度的关系

The relationship between soil erosion and vegetation coverage on the basic of TM image interpretation in Nanchuan City , Chongqing

主要研究结果如下：1.水花生覆盖度从Ⅰ级到V级总体上是呈现逐渐递增的趋势。

The main results were as follows : 1 . The coverage rate of A. philoxeroides tended to be increased from ⅰ to ⅴ grade level .

如何满足目标区域覆盖度且工作节点个数最少的节点集合，是一个NP难问题。

The problem of computing such minimal active sensor set , which covers the target region completely , is NP-hard .

植被指数与植被覆盖度呈线性相关，通过NDVI建立植被覆盖度估算模型。

Vegetation index and vegetation coverage was linearly correlated by NDVI , vegetation coverage estimation model .

由此推断，当覆盖度θ<2ML时，在GaAs（100）表面上淀积的Mn的超薄膜具有磁有序结构。

It is concluded that the magnetic ordering is established in the ultra thin Mn overlayer on GaAs ( 100 ) at θ < 2ML .

通过MonteCarlo模拟得到的离子选择系数与交换时间的关系，可以计算出离子在表面的覆盖度（即是在表面的分配比率）随时间而变化。

Through the relationship between ion selectivity and exchange time obtained from Monte Carlo simulation , the change of ion coverage to time can be calculated .

氧原子在Ni（111）表面的择优吸附位不受覆盖度影响，氧原子均优先吸附到三重洞位。

The favorite adsorption site of Ni ( 111 ) - O system is apparently independent of coverage . Oxygen atoms adsorb on the fcc site at all coverage .

播种当年地面覆盖度可达80%，第2a可达90%以上；

The coverage could be 80 % within the seeding year and more than 90 % the next year .

当覆盖度大于10个单层时，表面结构不再保持与衬底相关的晶格常数与对称性，形成fcc铁的（111）外延结构。

For Fe coverages more than 10 ? ML , incommensurate layer of Fe with a fcc ( 111 ) face epitaxial structure is formed .

植被覆盖度（VegetationCoverage，简称VC）是衡量地表植被状况的一个最重要的指标，同时，它又是影响土壤侵蚀的主要因子。

Vegetation coverage ( VC ) is the most important index to measure the vegetation status of the earth 's surface and the major factor to affect the soil erosion .

N2的脱附量随NO气体暴露量增加而增加，但当气体覆盖度超过一定值后，脱附量趋于定值。

With increasing the exposure amount of NO gas , the desorption amount of N2 increased and the peak desorption temperature decreased .

在Fe（111）和Fe（100）面上，当覆盖度小于1/2ML，覆盖度对CO的影响可以忽略不计。

On the Fe ( 111 ) and Fe ( 100 ) surfaces , when the coverage is below 1 / 2 ML , the coverage effect on CO adsorption can be neglectable .

骨干网络中的被动模式RTT测量方法植被覆盖度的照相测量及其自动计算

Passive estimation of round-trip time in backbone network Determination of Vegetation Coverage By Photograph and Automatic Calculation