光合有效辐射 meaning in English
photosynthetic active radiation（par）
photosynthetically active radiation par
Examples
- Temporal and spatial distribution of photosynthetically active radiation flux of coniferous and broadleaved mixed forests at the dinghushan mountain , low subtropical china
鼎湖山针阔混交林光合有效辐射的时空格局 - The error caused by the change of radiation is more than 40 % in the morning and evening , and is less than 5 % in the rest time . the error caused by the change of temperature fluctuates obviously from 20 % to 40 % . but it is less than 10 % about 8 am and 14 pm
光合有效辐射日变化引起的误差在早上和傍晚通常都在40以上，其它时间保持在5以内；温度日变化引起的误差在一天中波动较大，误差水平一般在20 50 ，但上午8点和下午2点左右，误差能维持在10以内； co _ 2日变化的影响一天中表现比较稳定，通常都在10 20之间，但上午11点下午13点这段时间的误差一般都在5以内。 - Under the condition of different soil humidity and measuring time , a series of ecophysiological indexes , such as net photosynthetic rate , transpiration rate , stomatal conductance , the flow of water , atmospheric temperature , relative humidity , photosynthetic available radiation , and hydraulic conductivity are measured in order to find the factors which cause robinia xylem embolism
摘要在不同的土壤水分含量和不同的测定时间条件下，对刺槐的一系列生理生态指标：净光合速率、气孔导度、蒸腾速率、水势、大气温度、相对湿度、光合有效辐射以及导水率进行测定，探求刺槐木质部发生栓塞的影响因子。 - Photosynthesis and transpiration have no obvious difference between different age s . viciifolia , but they have consanguineous physiological responses to environmental factors such as photon flux density , air temperature and the content of soil water . compared with caraganar , s . viciifolia formed the physiological mechanics of less photosynthetic rate and less tranpiration rate to resist drought
狼牙刺的净光合速率同光合有效辐射、大气温度和二氧化碳浓度之间没有显著相关性，与土壤含水量显著正相关；蒸腾作用与光合有效辐射、土壤含水量及空气温度有很好的正相关性，与大气湿度有负相关性。 - The results show that loss of hydraulic conductivity of robinia xylem embolism is different under the condition of different soil humidity and loss of hydraulic conductivity is related with net photosynthetic rate , transpiration rate , stomatal conductance , the flow of water , atmospheric temperature , relative humidity , photosynthetic available radiation , and hydraulic conductivity
研究结果表明：木质部导水率损失在不同的土壤含水量以及不同的测定时间条件下是有显著性差异的；刺槐的导水率损失与净光合速率、气孔导度、水势、蒸腾速率、光合有效辐射、大气温度显著相关。