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   草地分类的 的翻译结果: 查询用时:0.233秒
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草地分类的
相关语句
  grassland classification
     A New System of Tame Grassland Classification─The Comprehensive and Sequen- tial Classification.
     人工草地分类的新系统──综合顺序分类法
短句来源
     Potentials and limitation of AVHRR for grassland classification in Xilingol,Inner Mongolia
     AVHRR草地分类的潜力和局限:以锡林郭勒草原为例
短句来源
     (4)The new model not only initiates a new approach to the study of multifactor natural grassland classification,but also provides a powerful tool to solve some similar problems,thus successfully broadening the sphere of its application.
     天然草地分类的实际应用表明,投影寻踪动态聚类模型切实可行,取得了很好的效果,在多因素聚类分析领域具有广阔的应用前景。
短句来源
  “草地分类的”译为未确定词的双语例句
     THE COMPARISON OF CLASSIFICATION WITH THE DIFFERENT METHODS TO THE GRASSLAND WITH SHRUBS IN BEIJING MOUNTAINS
     不同草地分类方法对北京山区灌草丛草地分类的比较研究
短句来源
     Classification of Grassland on the Loess Plateau by Advanced Comprehensive and Sequential Classification of Grassland.
     用改进的综合顺序分类法对黄土高原草地分类的探讨
短句来源
     CLASSIFYING NATIVE GRASSLANDS OF OINGHAI PROVINCE WITH THE INTEGRATED CLASSIFICATION SYSTEM
     用综合顺序分类法对青海草地分类的探讨
短句来源
     The results are very similar to those of the qualitative classification, which demonstrates that the methods of TWINSPAN and DCA are suitable for the classification of the subtropical grassland.
     所得结果与定性分类基本相同,说明该方法是适用于亚热带草地分类的
短句来源
  相似匹配句对
     (d) bottomland meadow;
     河滩草地
短句来源
     RIGHT AND WRONG IN CLASSIFICATION
     分类的是与非
短句来源
     A Can on the GrasslandA
     草地上的罐头
短句来源
     Potentials and limitation of AVHRR for grassland classification in Xilingol,Inner Mongolia
     AVHRR草地分类的潜力和局限:以锡林郭勒草原为例
短句来源
     CLASSIFYING NATIVE GRASSLANDS OF OINGHAI PROVINCE WITH THE INTEGRATED CLASSIFICATION SYSTEM
     用综合顺序分类法对青海草地分类的探讨
短句来源
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In the northern slope of Tianshan Mountain, Xinjiang, with Landsat MSS data, the grassland classification and mapping were studied. Based on the analysis of some spectral properties of grasslands and the separability between the ground classes, with the topographic types, the distinct 42 classes (27 grassland classes) were classified by a maximum-likelihood classifier. The classification accuracy of 86 percent ground classes is above 80 percent. Computer plotting that draws the line map of grassland types (scale...

In the northern slope of Tianshan Mountain, Xinjiang, with Landsat MSS data, the grassland classification and mapping were studied. Based on the analysis of some spectral properties of grasslands and the separability between the ground classes, with the topographic types, the distinct 42 classes (27 grassland classes) were classified by a maximum-likelihood classifier. The classification accuracy of 86 percent ground classes is above 80 percent. Computer plotting that draws the line map of grassland types (scale 1:100,000) from the classification result was proposed. It speeds up 200--300 times than manual mapping. The methods to obtain the Digital Terrain Model (DTM) from contour map by scan digitizing were studied. With the DTM the grassland classification accuracy in the mountain areas was improved efficiently.

本文探讨了利用计算机分析MSS数据在新疆天山北坡进行草地分类和制图的方法。在研究草地卫星光谱特征和各种地类光谱可分性的基础上,通过选择不同高度地带上的地物类型,分地带分类,分出42种类型,其中有27种草地类型。检验表明,86%地类的分类精度在80%以上,草地分类深度达到亚类和组级。用计算机成图方法将分类结果绘制成1:10万草地类型图,速度比人工成图提高200—300倍。本文还研究了通过扫描数字化等高线图建立数字地形模型的方法。利用数字地形模型改善山区草地分类精度,取得了良好的效果。

The technical key of interpreting grassland types by means of remote sen- sing image depents on the accurate principle and method of interpretation. The interpretation guided by the principle of the science of grassland type and combined the analysis of spectral characteristics with geographical features of grassland type, as well as the interpretation of divided grassland district and zone is presented in the paper. Futhermore, it also includes the improvement of current grassland classification and the level...

The technical key of interpreting grassland types by means of remote sen- sing image depents on the accurate principle and method of interpretation. The interpretation guided by the principle of the science of grassland type and combined the analysis of spectral characteristics with geographical features of grassland type, as well as the interpretation of divided grassland district and zone is presented in the paper. Futhermore, it also includes the improvement of current grassland classification and the level of interpretation by means of rem- ote sensing image.

利用遥感图象解译草地类型的技术关键在于确定正确的解译原则和方法。本文提出了应用草地类型学原理指导解译、草地类型光谱特征与地学特征相结合分析、分地区分地带分解解译的草地类型解译原则。同时对改进现行草地分类、提高遥感图象解译水平等问题进行了讨论。

The zonal vegetation of the Nanling Mountains in Hunan Province is evergreen broadleaf forest. Due to unrational utilization of the land, many forests are severely destroyed and large areas of grassland have occurred. The total area of grassland is about 1497.2×107mu (9.98× 105 ha), occupying more than one fourth of the whole region. The classification and ordination of the grassland vegetation are studied with the numerical methods of TWINSPAN (Two-way indicative species analysis) and DCA (Detrended correspondence...

The zonal vegetation of the Nanling Mountains in Hunan Province is evergreen broadleaf forest. Due to unrational utilization of the land, many forests are severely destroyed and large areas of grassland have occurred. The total area of grassland is about 1497.2×107mu (9.98× 105 ha), occupying more than one fourth of the whole region. The classification and ordination of the grassland vegetation are studied with the numerical methods of TWINSPAN (Two-way indicative species analysis) and DCA (Detrended correspondence analysis). The methods use the data of 48 plots and 150 species for calculating. The plots of the fourth division are divided into 10 main vegetation types. At the first division level, the plots are distingguished into two types, the mountain grassland type (occurring at elevations of more than 1000 m) and the hill grassland type (occurring at elevations of less than 600m). The other levels are based on difference of ecological facters. The results are very similar to those of the qualitative classification, which demonstrates that the methods of TWINSPAN and DCA are suitable for the classification of the subtropical grassland.Distinctive types have different utilization ways. The types on the higher mountains should be dominated by forestry. At some place medicinal trees can be planted. At the places of the gentle slopes it is possible to establish artificial grassland for pasturage under paying attention to soil erosion- The slopes of over 25 degrees should be closed. At the places having slopes of 15-20 degrees it is suitable to develop both forestry and pasturage. The hills about 300-600m in elevation may be used for cultivating economical forests and fuel forests. Below the elevation of 300 m the fruit gardens (citrus) can be established if there is irrigation. On the hills of gentle slopes the artificial pasture ground can be developed, but it should be combined with forestry. In agricultural areas the rotation of cereal crops and forage grass should be put into practice. It is most important to increase the ecological and economical benefits.

湖南南岭山区的地带性植被是常绿阔叶林,由于不合理的利用,森林遭受严重破坏而出现了大面积的草山,面积约1497.2万亩(99.8万ha),占土地总面积的1/4强。本文运用二元指示种分析TWINSPAN和无倾向对应分析DCA的数学方法对草地植被进行分类与排序。利用48个样方和150个植物种的资料进行计算,在第4级水平上划分出12个主要草地植被类型,其中将近似的类型合并成10个类型。在第1级水平上明显地将海拔1000m以上的与600m以下的分成2大组;在其它水平上则根据其他不同生态因子(岩性、pH值等)将出现的区别种逐级分开。所得结果与定性分类基本相同,说明该方法是适用于亚热带草地分类的。 不同类型在开发利用上有很大差异,高海拔的植被类型应以造林或封山育林为主,并可适当发展木本药材;在平缓的山原上虽可开辟人工草地发展畜牧业,但必须要防止水土流失,坡度在25。以上的应封育;15—20°的地方可以发展林业与畜牧业;在海拔300—600m的丘陵岗地类型上可以发展薪炭林、经济林;在海拔300m以下,水源充足的地方可以发展果木林(柑桔等),缓坡丘陵地类型可建立人工草地,但应与林业相结合,在农区可进行粮草轮作。总之...

湖南南岭山区的地带性植被是常绿阔叶林,由于不合理的利用,森林遭受严重破坏而出现了大面积的草山,面积约1497.2万亩(99.8万ha),占土地总面积的1/4强。本文运用二元指示种分析TWINSPAN和无倾向对应分析DCA的数学方法对草地植被进行分类与排序。利用48个样方和150个植物种的资料进行计算,在第4级水平上划分出12个主要草地植被类型,其中将近似的类型合并成10个类型。在第1级水平上明显地将海拔1000m以上的与600m以下的分成2大组;在其它水平上则根据其他不同生态因子(岩性、pH值等)将出现的区别种逐级分开。所得结果与定性分类基本相同,说明该方法是适用于亚热带草地分类的。 不同类型在开发利用上有很大差异,高海拔的植被类型应以造林或封山育林为主,并可适当发展木本药材;在平缓的山原上虽可开辟人工草地发展畜牧业,但必须要防止水土流失,坡度在25。以上的应封育;15—20°的地方可以发展林业与畜牧业;在海拔300—600m的丘陵岗地类型上可以发展薪炭林、经济林;在海拔300m以下,水源充足的地方可以发展果木林(柑桔等),缓坡丘陵地类型可建立人工草地,但应与林业相结合,在农区可进行粮草轮作。总之,应该建立人工生态系统,以提高经济效益和生态效益。

 
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