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   覆盖状况 在 自然地理学和测绘学 分类中 的翻译结果: 查询用时:0.014秒
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覆盖状况
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  cover condition
    Temperature-Vegetation Angel and Temperature-Vegetation Distance (TVA&TVD) based on NDVI-Ts space were proposed as biophysical parameters which can be thought as a token of surface land cover condition.
    首先提出基于NDVI-Ts特征空间的温度植被角度和距离(TVA&TVD)作为表征地表土地覆盖状况的生物物理参数。
短句来源
    China is a country with a vast territory and diversiform, complicated surface land cover; upon that the research about Chinese surface land cover condition is one of the import parts of globe environment change.
    我国幅员辽阔,地表土地覆盖分布状况复杂多样,因此对我国地表土地覆盖状况进行研究对全球环境变化研究具有重要意义。
短句来源
    Integratedly considering field investigation background, selecting Man-Wan Dam Immigrants Settlement area as the study case, based on the application of remote sensing technique, Man-Wan Dam Immigrants Settlement land cover condition were monitored by Landsat TM satellite images in 1988 , 1996 and 2000. Based on these data, the paper analyzes land cover change in class compostion and spatial distribution, which last from Man-Wan Dam plan to be completed.
    结合野外实地考察,应用1988、1996、2000年的TM数据,以漫湾电站建设中远迁移民安置地作为研究试验区,监测移民安置地试验区内相应时段的土地覆盖状况,分析因电站建设以来试验区的土地覆盖变化时空分异特性与生态环境状况。
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  “覆盖状况”译为未确定词的双语例句
    The Applications of High-resolution Satellite Images for Land Cover Monitoring in Nanji Islands
    应用IKONOS卫星遥感图像监测南麂列岛土地覆盖状况
短句来源
    Based on the environment dynamic monitoring item from 2000 to 2004 in Sichuan province,this paper analyzes the proceeding means and technology flow of the CBERS-02 image data,and discusses using CBERS-02 image data to acquire some information such as land use status by means of remote sensing and GIS.
    以四川省2000-2004年生态环境动态监测项目为基础,对中巴资源二号卫星(CBERS-02)遥感数据的处理方法和技术流程进行了分析和讨论,并探讨利用CBERS-02卫星遥感图像,结合G IS技术实施快速、准确、经济的大范围土地利用/覆盖状况调查.
短句来源
    By the image process and interpretation,the land use dynamic change information is picked up and the background database of the land use is founded.
    通过对遥感图像处理和信息提取,查明了研究区2000-2004年期间土地利用/覆盖状况及其动态变化.
短句来源
    The results show that the tendency of the vegetation cover during 1984 to 1994 got better,but the tendency of the vegetation cover during 1994 to 2004 got bad.
    分析结果表明:在1984至2004年的20年间,北运河地区植被覆盖情况有了较大的改善. 但是,2004年的植被覆盖状况与1994年相比却有恶化的趋势.
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  cover condition
The QXP snow cover condition of April has a close relation to the heating intensity of summer.
      
The all-cover condition was considerably high compared with other cover conditions.
      
Policy users need information on land cover condition to develop policies and strategies at both global and local levels.
      
Timber harvesting has changed the riparian vegetation and cover condition along significant stretches of the West Fork.
      


Fractional vegetation cover data (FVC) based on the annual maximum NOAA/AVHRR NDVI (Advanced Very High Resolution Radiometer normalized difference vegetation index) data and the ground meteorological data have been used to analyze the relationship between the temporal and spatial evolution of ecological landscape pattern and climate change in Xinjiang Autonomous Region, China from 1982 to 1993.It is found that during this period, the average oasis cropland or low-damp forest-shrub meadow area occupies 7.5% of...

Fractional vegetation cover data (FVC) based on the annual maximum NOAA/AVHRR NDVI (Advanced Very High Resolution Radiometer normalized difference vegetation index) data and the ground meteorological data have been used to analyze the relationship between the temporal and spatial evolution of ecological landscape pattern and climate change in Xinjiang Autonomous Region, China from 1982 to 1993.It is found that during this period, the average oasis cropland or low-damp forest-shrub meadow area occupies 7.5% of the whole region, desert 25.70%; temperate semi-arbor desert 21.70%; temperate shrub and semi-shrub desert (8.36%;) alpine subalpine desert steppe 7.71%; temperate gramineous and ruderal steppe 7.63%; mountain forest steppe 2.13%; high-cold barren 8.93%; high-cold low semi-shrub desert 9.08%; water/ice 1.26%. Compared with the 30-year (1961-1990) climatology, the 12-year average annual surface air temperature and precipitation over the whole region increase by 0.28℃ and 23.6 mm respectively. The maximum increase of precipitation did not occur over the mountain region, instead it occurs over the region with a concentrated distribution of oases, suggesting the positive role of oases in adjusting regional climate. The area of temporal steppe also increased with the growith of precipitation and temperature. Together, these results demonstrate that, during the 12-year period, the condition of vegetation cover was improved and large-scale desertification did not occur in Xinjiang.

应用1982~1993年12年的NOAA气象卫星遥感数据(分辨率为8km×8km),本文借助FVC(Frac-tionalvegetationcoverdata)植被指数分析新疆维吾尔自治区境内的生态景观格局.分析结果指出,全区12年绿洲(自然和人工)的平均面积占整个区域面积的18.48%,荒漠为37.2%,典型草原占10.27%,山地森林草原为3.39%,沙漠裸地占30.31%,湖泊占0.348%.与30年气候平均值相比,12年中年降水量全区增加了23.6mm,温度增加了0.28℃.有意义的是降水量增加最多的地区不是山区,而是在南疆西北部绿洲集中分布的地区.这表明了一个重要的事实,即在一定尺度的气候背景条件下,绿洲的植被覆盖对调节区域气候有着积极的作用,当下垫面的植被覆盖面积达到一定程度时,植被和气候之间的相互作用十分明显.同时,在降水量增加和温度升高的条件下,典型草原的面积呈扩大趋势.总的来说,从20世纪80年代以来至90年代初期的10余年间,新疆的气候趋向好转,植被覆盖状况有所改善,未发现有大范围沙漠化现象.

Integratedly considering field investigation background, selecting Man-Wan Dam Immigrants Settlement area as the study case, based on the application of remote sensing technique, Man-Wan Dam Immigrants Settlement land cover condition were monitored by Landsat TM satellite images in 1988 , 1996 and 2000. Based on these data, the paper analyzes land cover change in class compostion and spatial distribution, which last from Man-Wan Dam plan to be completed. The results shown that, with the Dam setting up, land...

Integratedly considering field investigation background, selecting Man-Wan Dam Immigrants Settlement area as the study case, based on the application of remote sensing technique, Man-Wan Dam Immigrants Settlement land cover condition were monitored by Landsat TM satellite images in 1988 , 1996 and 2000. Based on these data, the paper analyzes land cover change in class compostion and spatial distribution, which last from Man-Wan Dam plan to be completed. The results shown that, with the Dam setting up, land cover change in mountain Immigrants Settlement area has its characteristic. The behave is that mountain slope dry land mix with other cover types is of dominance relative to other cover classes, and shrubbery cover area reduce rapidly while dry land mix with other cover types increase quickly. Analysis associated with field investigation, one reason comes from the limit of the mountain natural conditions; another main drive is the poor lag of land use management manner by man-made action. So it is necessary to enhance Dam Immigrants Settlement area land use plan and management in Lancang River basin, prompt local social sustainable development.

结合野外实地考察,应用1988、1996、2000年的TM数据,以漫湾电站建设中远迁移民安置地作为研究试验区,监测移民安置地试验区内相应时段的土地覆盖状况,分析因电站建设以来试验区的土地覆盖变化时空分异特性与生态环境状况。结果表明,试验区移民安置地的土地覆盖在结构上表现为以旱地及其他混合类型为主要优势,在时间动态方面,移民安置地的旱地及其他混合类型出现急剧增加,而灌木林地急剧减少。究其原因是受山区自然条件限制,而电站移民因生活与生产需要,大量开垦灌木林地进行农业开发利用活动所致。由此得出,对于电站建设所必然出现的山区远迁移民安置地建设,自然力和人为作用是导致当地生态环境正效应和负效应的根本驱动力,因此,对于电站建设中的山区移民安置点土地利用,必须坚持规划指导与管理,促进其走可持续发展之路。

The main purpose of this paper is to extract three spectral coefficients of water factor, vegetation factor and soil factor which are contained in every pixel of LANDSAT ETM+ images in order to get a new available method to process similar multi- or high-spectral images. It mainly applies a multi-spectral analysis method, i. e., Pattern Decomposition Method based on the LANDSAT ETM+ images at Beijing area. At first, this study transfers the DN value of the sensor recorded to the satellite reflectance and at...

The main purpose of this paper is to extract three spectral coefficients of water factor, vegetation factor and soil factor which are contained in every pixel of LANDSAT ETM+ images in order to get a new available method to process similar multi- or high-spectral images. It mainly applies a multi-spectral analysis method, i. e., Pattern Decomposition Method based on the LANDSAT ETM+ images at Beijing area. At first, this study transfers the DN value of the sensor recorded to the satellite reflectance and at the same time makes atmospheric correction to all six bands of 1-5 and 7. Secondly, through band math using Envi software to extract the standard spectral pattern: water pattern, vegetation pattern and soil pattern which are the common parts of the ground objects having the similar characters. Thirdly, decomposition is performed to the whole image using Mat-lab software to get the three decomposition coefficients for every pixel. Finally, a case applying the vicinity of Miyun Reservoir in Beijing, through the three coefficients, a direct land cover type and area are recognized and calculated based on some discrimination conditions. It is convenient to convert the resultant data to land cover grid, and based on the three coefficients ratio one can get the percentage of the objects in every pixel.

采用模式分解的方法(PDM),对北京密云地区2002年3月19日ETM+图像进行光谱模式提取与分解,得到研究区各个像元的植被、水和土壤系数;并通过不同系数的组合和判别分析的条件确定了研究区的土地覆盖状况以及不同土地覆盖类型的面积。结果表明,在降低ETM+数据维的情况下,光谱模式分解可以更直接的反映地物的类型。

 
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