光合有效辐射

在非洲南部Bloemfontein光合有效辐射与明朗指数之间的关系

Relationships between photosynthetically active radiation and clearness index at Bloemfontein , South Africa .

模拟光合有效辐射每小时频率分布函数项建议

Proposal of a function for modelling the hourly frequency distributions of photosynthetically active radiation .

水稻对CO2的同化吸收与光合有效辐射、气温有极显著相关关系；

Assimilation of CO2 by rice is significantly correlated with photosynthetically active radiation and temperature .

将稻田CO2通量与光合有效辐射、气温进行回归分析，以掌握两者对水稻CO2同化消耗的影响。

The response of CO2 flux to photosynthetically active radiation and temperature was also studied through regressive analysis .

光合有效辐射（PAR）的气候学研究

A climatological study on the photosynthetically active radiation

光合有效辐射和CO2浓度是对净光合速率和叶片蒸腾速率影响最强烈的环境因子。

The most important environmental influencing factors on Pn and Tr were photosynthetic active radiation ( PAR ) and CO2 concentration .

与此同时，覆膜也降低了芜菁微环境中大气的CO2浓度，叶室和叶片温度，改变了光合有效辐射。

In addition , plastic mulching cultivation reduced the CO2 density , air humidity , air and leaves temperature and photosynthesis effective radiation .

光合有效辐射强度和大气CO2浓度是影响复合系统玉米、大豆、绿豆和辣椒光合速率的主要环境因子。

PAR and atmospheric CO2 concentration were two main factors influencing the photosynthetic rate of corn , soybean , mung bean and pepper .

潜热通量、显热通量、净辐射、光合有效辐射均与CO2通量呈极显著正相关。

Latent heat flux , sensible heat flux , net radiation flux and photosynthetic active radiation are all significantly positively related with CO2 flux .

结果表明，用光合有效辐射和蒸腾速率对净光合速率矫正的效果最好，其次为CO2增量和叶室内温度。

The effect is best that photosynthetic rate is adjusted by PAR and transpiration rate then is that adjusted by Delta CO2 and leaf chamber temperature .

对CO2通量与光合有效辐射的关系分析表明：白天稻田吸收的CO2通量与到达地面的光合有效辐射存在着显著的负相关关系。

In addition , the relationship between daytime absorption of CO2 flux and Photosynthetically-active radiation is investigated for the rice paddy , and resulting a negative correlation .

本文的主要研究目的是建立玉米冠层内光合有效辐射（PhotosyntheticallyActiveRadiation，PAR）三维空间分布的模拟模型。

For modelling of three dimensional distribution of Photosynthetically Active Radiation ( PAR ) in crop canopy , the important contents of this thesis are as following .

分析了不同月份典型天气（晴天和阴天）条件下不同冠层部位的光合有效辐射（PAR）的分布情况。

Analyzed photosynthetically active radiation ( PAR ) distribution of different crown layers parts on different months classic weather conditions ( Cloudy Or Sunny ) .

在春节催花牡丹温室生态因子中CO2浓度较光合有效辐射对净光合速率有相对较高的灰色关联度。

Between environmental CO2 concentration and photosynthetic available radiation , environmental CO2 concentration has the relative higher The grey correlation degree on factors that influence changes of photosynthetic rate in solar greenhouse .

光合有效辐射（PAR）是影响林下参Pn的主要因素，Pn与PAR存在显著的对数关系，r2≥0.808；

Photosynthetically available radiation ( PAR ) was the main influencing factor on Pn and logarithmic relation between Pn and PAR was significant , r2 ≥ 0.808 ;

偏相关分析表明光合有效辐射（PAR）和大气温度（Ta）是决定其净光合速率的主要环境因子。

Partial correlation analysis showed that the major environmental factors of net photosynthetic rates were the photosynthetic active radiation ( PAR ) and air temperature ( Ta ) . 2 .

其中，气孔导度、蒸腾速率、叶温、光合有效辐射及基于叶温的蒸汽压亏缺是大豆光合作用的促进因子；细胞间CO2浓度、空气中CO2、空气相对湿度为主要的限制因子。

Stomata conductance , transpiration rate , temperature of leaf , photosynthetic was promoting factors for bean leaf ; intercellular CO2 concentration , CO2 of air and air relative humidity were mainly limiting factors . 3 .

对乌拉苔草叶片的蒸腾速率、气孔阻力、光合有效辐射、空气温度、叶片温度、相对湿度、风速及大气中CO2的体积分数等指标进行了测定。

The transpiration rate , stomatal resistance , temperature of leaves of Carex meyeriana as well as photosynthetically available radiation ( PAR ), air temperature , relative humidity , wind speed , atmospheric CO_2 concentration were determined .

6沟播小麦的CO2通量比平作畦麦，相对增加9%-16%，且随着垄宽的增加而增加。但对光合有效辐射的吸收有减少的趋势。

As compared with ( FC ) wheat , the CO_2 flux in furrow-drilling wheat increased by 9 % - 16 % , and increases with widening of the ridge , but meanwhile the absorption of photosynthesis-effective radiation exhibited a decrease trend .

得到以下主要研究结果：受杏树行遮阴的影响，杏与粮棉间作系统光合有效辐射（PAR）具有明显的时空变化特征。

Get the following main research results : The influence of shade almond trees line by intercropping system , apricot and cotton photosynthetic available radiation ( PAR ) has obvious the spatial and temporal variation characteristics .

薏苡光合作用的最适温度为31￣37℃，相对湿度33%￣44%，光合有效辐射在470￣710μmol/（m2·s）。

Job ' s-tears exhibited an optimal photosynthesis at the temperature of 31 ~ 37 ℃, relative humidity of 33 % ~ 44 % and a photosynthetically active radiation of 470 ~ 710 μ mol / ( m2 · s ).

从水平、垂直方向和叶片的旋转运动等角度对紫椴（Tiliaamurensis）幼苗的叶片运动特征进行了描述，并就枝条、叶片空间取向及叶片运动对叶片截获光合有效辐射的影响进行了讨论。

Light interception capacity was studied in amur linden ( Tilia amurensis ) seedlings in relation to branch orientation , leaf orientation and leaf movement ( horizontal , vertical and rotation movement ) .

灵敏度分析表明，在输入参数变化±10%时，CropC-对6个主要输入参数响应的敏感性依次为温度>光合有效辐射>大气CO2浓度>土壤全氮含量>施氮量>降水。

Model sensitivity analysis suggests that the sensitive significance of Crop-C to input parameters is in descending order of temperature , PAR , atmospheric CO2 concentration , soil nitrogen concentration , rate of nitrogen application and precipitation when the input parameters vary at-10 % and 10 % , respectively .

光合有效辐射（PAR）是影响生态系统能量转化和物质生产的重要生态因子，对其时空格局的研究，有助于深入理解生态系统的生理生态因子变化和光合行为。

PAR ( photosynthetically active radiation ) is an important ecological factor which controls the energy transforming and matter production . It is very helpful to understand the physio-ecological factors and photosynthesis to research the temporal and spatial characteristics of PAR flux of the ecosystem .

分析了祁连山海北高寒草甸地区1998年植物生长期内光合有效辐射（PAR）的日、季节变化特征。

The daily and seasonal variation features of PAR in alpine meadow area during plant growing period in 1998 were analyzed , the results show that the tendency of daily variation of PAR conformed with that of the solar global radiation presenting a single peak type .

利用2004年微气象观测资料，分析了海北高寒湿地长、短波辐射以及地表反射率（A）和光合有效辐射（PAR）占太阳总辐射（DR）比例（η）的变化特征。

According to the micro-climate data of Haibei alpine wetland of Qinghai in 2004 , the short wave and long wave radiation , surface reflectivity ( A ), and the ratio (η) of photosynthetic active radiation ( PAR ) to total global solar radiation ( DR ) were analysised .

冠层平均碳同化速率随光合有效辐射的增强而增大，但当光合有效辐射持续增强至500μmol·m-2·s-1左右时，碳同化速率不再增大。

Canopy average carbon assimilation rate increases along with the increase of photosynthetic active radiation , but when the photosynthetic active radiation continues to increase to5500 μ mol · m-2 · s-1 , carbon assimilation rate will no longer increase .

在强光下CO2对茶树有较强的气肥作用，在光合有效辐射强度为400μmol/（m2s）左右的弱光环境中CO2浓度提高也可提高光合速率水平。

Under a weak light ( the PAR was below 400 μ mol m ~ ( - 2 ) s ~ ( - 1 )) condition , although increasing CO_2 concentration could improve the photosynthesis rate , the effect of air temperature on the photosynthesis rate was more obvious .

光合有效辐射比率（FPAR）是陆地生态系统碳循环研究的重要参数。

The Fraction of Absorbed Photosynthetically Active Radiation ( FPAR ) has been recognized as one of the important variables in carbon cycle research of terrestrial ecosystem .

研究了太行山低山丘陵区板蓝根在20℃温度条件下，不同光合有效辐射（PAR）强度及不同CO2摩尔分数（CCO2）范围内叶片光合及水分生理生态参数的变化特征。

Under the condition of 20 ℃, the different intensities of photosynthesis active radiation ( P AR ) and different ranges of CO 2 contents ( C CO 2 ), the characteristics of leaf photosynthesis and water physio-ecology of Isatis indigotica were studied in the hilly region of Taihang Mountain .