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   辐射干燥指数 的翻译结果: 查询用时:0.01秒
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辐射干燥指数
相关语句
  radiation dryness indexes
     The relationship of NDVI and climatic factors under different radiation dryness indexes
     辐射干燥指数影响下NDVI与气候因子的关系
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  “辐射干燥指数”译为未确定词的双语例句
     (2) The correlations of NDVI with precipitation and net radiation had great difference under different RDI scopes.
     (2) 在不同的辐射干燥指数下,NDVI与降水、净辐射的相关性存在很大的差异。
短句来源
     When RDI was less than 1, there existed a nonlinear relationship between NDVI and precipitation and net radiation;
     当辐射干燥指数小于1时,ND-VI与降水、净辐射之间存在明显的非线性关系;
短句来源
     when RDI was greater than 10, their correlations were rather weak.
     而当辐射干燥指数大于10时,它们之间的相关性很小。
短句来源
     (3) Based on 13 global vegetation types, the correlations of NDVI and Pcp, Netrn, RDI were different in different vegetations. The hierarchical cluster analysis showed that the correlations of NDVI with Pcp and Netrn could be divided into 4 categories.
     (3) 以全球13种植被为基础,分别研究了不同植被类型下的NDVI与降水、辐射干燥指数、净辐射量之间的关系,结果表明不同植被类型下的NDVI与这些气候因子的相关性不同,分层聚类的结果表明,这13种植被类型下的NDVI与降水、净辐射的关系可以分为4种类型。
短句来源
  相似匹配句对
     Application of infrared radiation in drying grain
     红外辐射在谷物干燥中的应用
短句来源
     THE STEADY STATUS TEMPERATURE DISTRIBUTION OF WOOD WHEN DRIED BY RADIATION
     木材辐射干燥稳态温度分布
短句来源
     CHANNELING RADIATION
     沟道辐射
短句来源
     On radiation from printed circuits
     印制电路的辐射
短句来源
     Overview of Sjogren's Syndrome
     干燥综合征
短句来源
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The global 1*1 degree grid data were used to analyse the relationship between NOAA/AVHRR NDVI and the climatic factors which include multi-year average precipitation (Pcp), multi-year averaged net radiation (Netrn), and multi-year average radiation dryness index (RDI) from 1986 to 1990. The results showed that: (1) There, as a whole, existed a logarithmic relationship between NDVI and RDI, Pcp; whereas NDVI and net radiation (Netrn) had a linear relationship....

The global 1*1 degree grid data were used to analyse the relationship between NOAA/AVHRR NDVI and the climatic factors which include multi-year average precipitation (Pcp), multi-year averaged net radiation (Netrn), and multi-year average radiation dryness index (RDI) from 1986 to 1990. The results showed that: (1) There, as a whole, existed a logarithmic relationship between NDVI and RDI, Pcp; whereas NDVI and net radiation (Netrn) had a linear relationship. (2) The correlations of NDVI with precipitation and net radiation had great difference under different RDI scopes. When RDI was less than 1, there existed a nonlinear relationship between NDVI and precipitation and net radiation; when RDI was greater than 1 and less than 2, the nonlinear relationship of NDVI and precipitation was a little better than linear relationship; when RDI was greater than 2 and less than 10, they had an apparent linear relationship; when RDI was greater than 10, their correlations were rather weak. (3) Based on 13 global vegetation types, the correlations of NDVI and Pcp, Netrn, RDI were different in different vegetations. The hierarchical cluster analysis showed that the correlations of NDVI with Pcp and Netrn could be divided into 4 categories.

在全球1o ×1o 分辨率格点数据的基础上研究了1986~1990年多年平均NOAA/AVHRR的归一化植被指数(NDVI) 与多年平均降水(Pcp)、多年平均净辐射量(NetRn)、多年平均辐射干燥指数(RDI) 之间的关系,结果表明:(1) NDVI与降水、辐射干燥指数总体上存在对数关系,NDVI与净辐射量总体上存在线性关系。(2) 在不同的辐射干燥指数下,NDVI与降水、净辐射的相关性存在很大的差异。当辐射干燥指数小于1时,ND-VI与降水、净辐射之间存在明显的非线性关系;当它大于1且小于2时,NDVI与降水的非线性关系略好于线性关系;当它大于2且小于10时,它们存在明显的线性关系;而当辐射干燥指数大于10时,它们之间的相关性很小。(3) 以全球13种植被为基础,分别研究了不同植被类型下的NDVI与降水、辐射干燥指数、净辐射量之间的关系,结果表明不同植被类型下的NDVI与这些气候因子的相关性不同,分层聚类的结果表明,这13种植被类型下的NDVI与降水、净辐射的关系可以分为4种类型。

According to the records of 418 meteorological stations,the net radiation and the radiative index of dryness of Budyko's classification system were calculated,and the maps of distribution of Budyko's index in China have been drawn.Connecting with map of vegetation classification in China,the scatter graphs of net radiation and the dryness index of 8 vegetation zones were drawn,which kindly show the relationship and pattern between vegetation types and climate in China.The vegetation types include cool-temperate(boreal)...

According to the records of 418 meteorological stations,the net radiation and the radiative index of dryness of Budyko's classification system were calculated,and the maps of distribution of Budyko's index in China have been drawn.Connecting with map of vegetation classification in China,the scatter graphs of net radiation and the dryness index of 8 vegetation zones were drawn,which kindly show the relationship and pattern between vegetation types and climate in China.The vegetation types include cool-temperate(boreal) conifer forest, temperate mixed conifer-broadleaf forest,warm-temperate deciduous broadleaf forest,subtropical evergreen broadleaf forest,tropical rainforest and monsoon forest,temperate steppe,temperate desert and Tibetan-Qinghai plateau alpine vegetation. We got the range of climatic indexes of each vegetation zones in China.The calculation results show that the range of net radiation responding to the main vegetation types can be summarized as follows: cool-temperate conifer forest are(2 259.4)MJ~(2 384.9)MJ·m~(-2)·a~(-1);Cool-temperate mixed conifer-broadleaf forest are (2 343.1)MJ~(2 761.5)MJ·m~(-2)·a~(-1);warm-temperate deciduous broadleaf forest are(2 761.5)MJ~(3 347.3)MJ·m~(-2)·a~(-1);subtropical evergreen broadleaf forest are (2 845.9)MJ~(3 347.3)MJ·m~(-2)·a~(-1);tropical rainforest and monsoon forest are more than (3 347.3)MJ·m~(-2)·a~(-1);temperate steppe are (2 384.9)MJ~(3 012.6)MJ·m~(-2)·a~(-1);temperate desert are (2 301.3)MJ~(3 012.6)MJ·m~(-2)·a~(-1);Tibetan-Qinghai plateau alpine vegetation are (3 012.6)MJ~(3 347.3)MJ·m~(-2)·a~(-1).And the range of radiation index of dryness corresponding to the main vegetation types of China could be summarized as follows: cool-temperate conifer forest are 2.1~4.3;Cool-temperate mixed conifer-broadleaf forest are 1.2~2.1;warm-temperate deciduous broadleaf forest are 1.6~2.8;subtropical evergreen broadleaf forest are 0.6~1.6;tropical rainforest and monsoon forest are 0.5~2.0;temperate steppe are 2.1~6.2;temperate desert are >6.2;Tibetan-Qinghai plateau alpine vegetation are 2.8~23. The isolines of annual average net radiation relatively indicated the thermal gradient in China;the isolines of the dryness index showed the moisture gradient in China.And the map of integrating net radiation with dryness index shows better relation with vegetation types.Comparison between the prediction map and the map of vegetation classification were based on Kappa statistics and the values of Kappa statistics of 8 vegetation types are more than 40 percent.The comparison results indicate that the net radiation index and dryness index are significantly related to the types and distribution of main vegetations in China.The classification of vegetation types can be conducted on the basis of the combination application of both net radiation index and dryness index.

根据中国418个气象站资料,计算了布迪科(Budyko)分类系统的净辐射和辐射干燥度指数,绘制了各气候指标在中国的分布图。结合中国植被区划图,绘制了中国8个植被地带的净辐射和辐射干燥度指数的散点图,较好地表现了中国各植被类型与气候指标的关系和格局,包括寒温带针叶林,温带针阔叶混交林,暖温带落叶阔叶林,亚热带常绿阔叶林,热带季雨林、雨林区域,温带草原,温带荒漠,青藏高原高寒植被,并得到了中国各植被地带的气候指标范围及界限。通过分析可以看出,净辐射的等值线较好地反映了中国大陆的热量梯度,而辐射干燥指数则较好地反映了中国大陆的干湿梯度。综合水热指数与中国植被主要类型的对应也较好,通过KAPPA检验,结果表明净辐射和辐射干燥度指数与中国植被主要类型及其分布格局密切相关,两者结合可以进行宏观尺度上植被类型的划分。

 
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