The CO2 uptake rate of plants is affected by the plant species and environmental conditions such as photosynthetically active radiation, temperature, water and nutrient contents. PAR is the most immediate environmental control on photosynthesis while air temperature affects both photorespiration and dark respiration. In the natural condition, PAR and temperature play an important role in net CO2 uptake. The effects of PAR and air temperature on the CO2 uptake of Pterocarpus macrocarpus grown in a natural habitat were studied in the present work. Due to many uncontrollable factors, a simple rectangular hyperbola could not represent the measured data. The data were divided into groups of 2℃ intervals; CO2 uptake in each group may then be related to PAR by a rectangular hyperbola function. Using the obtained functions, the effect of PAR was removed from the original data.

用渦度相關(guān)法對亞熱帶紅壤丘陵區(qū)人工針葉林的二氧化碳韩国无码三级、水、熱通量進行了觀測日韩欧美女自拍图片大全集视频，重點分析了23m国产激情大臿免费视频、39m兩層高度的觀測結(jié)果，同時把觀測期分為春季和冬季兩個不同時間段作了對比：結(jié)果表明黄色网站免费亚洲，不管冬季還是春季亚洲午夜视频国产A片，39m高度所測的總通量值和夜間通量值都要小于23m的觀測值，這種通量差別表明：23m高度的觀測結(jié)果更接近當(dāng)?shù)厣鷳B(tài)系統(tǒng)與大氣之間的通量交換值草av在线，在此種生態(tài)類型條件下用渦度相關(guān)法測碳通量時，在23m有沪有免费黄色网站、39m兩層高度之間仍然存在大氣平流現(xiàn)象亚洲精品无码午夜福利；該試驗區(qū)植被在冬季仍然可以進行光合作用，而且光合作用所吸收的CO2大于呼吸作用所排放的CO2欧美性爱建材，因此該種生態(tài)系統(tǒng)在冬季仍表現(xiàn)為碳匯毛片一级三级；春季的碳通量值為冬季的2倍以上。

The geometry of canopy and interception of photosynthetically active radiation were measured.

通過實測和理論計算无码理论片，結(jié)果表明：高原地區(qū)冬小麥葉片比平原地區(qū)的更趨于直立国产人妻在线观看，具有比平原地區(qū)低的消光系數(shù)，能夠容納較大的綠葉面積和有效穗數(shù)欧美夜A级一级一级一级；當(dāng)冠層對PAR的截獲率趨于飽和時毛片日韩国产，高原地區(qū)麥田可容納的最大綠葉面積可達(dá)8.6，是平原地區(qū)的1.4倍左右中文字幕第2中文字幕第二页；開花到成熟期間的葉日積大約可達(dá)平原地區(qū)的2倍ⅩXX欧美色com，綠葉面積持續(xù)時間長；整個生長季期間清风阁黄色视频，高原地區(qū)的PAR總量是平原地區(qū)的1.7倍999久久久亚洲精品，單位綠葉面積所截獲的PAR是平原地區(qū)的1.3倍高潮少妇50p，又由于其葉片的趨于直立，故從上到下葉片受光比平原地區(qū)更均勻和充分色色视频网，群體光合潛力高国产国产人免费视频在线观看，對PAR的利用率更高。

Note : PAR means a Project Authorisation Request, to be submitted to ballot.

注意： PAR 是指&項目授權(quán)請求&日韩在线电影网中文字幕，應(yīng)提交投票www.欧洲视频在线。

Looking like so many players who have wilted in the presence of Woods, Kim bogeyed five and whiffed a short par putt on eight.

伍茲虎威凜凜，許多選手望之生怯亚洲第一色色色，金河珍也不例外毛片视频a毛片，柏忌了第五洞，第八洞短推救 par 又失敗黄网站A片免费。

With an attractive water feature adjacent to the tee, this strong Par 3 plays uphill to a well bunkered green.

在這里能夠獲得Par已經(jīng)是非常好的成績了黄片一级二级。

The term par itself is a standard term in sports handicapping, where it simply means 'level' or 'even.

Par 這名詞成了一個標(biāo)準(zhǔn)術(shù)語，簡單地意指'平等的'或是'相當(dāng)?shù)?#039;運動差點黄页观看免费在线。

Moreover, Par-3 localizes on the membrane when Caco2 or MDCK cells are confluent, but translocates to the nucleus when cells are subconfluent.

此外色视污网站大全，Par-3蛋白在Caco2和MDCK細(xì)胞高密度時主要定位于細(xì)胞膜上，在低密度時主要定位于細(xì)胞核中大伊人久久。

The time course showed that the actions of par 2 agonists initiated at 2 h and reached their peaks at 16 h.

時間相關(guān)曲線表明国产免费观看黄AⅤ片久久，par 2激動劑的作用從2 h開始，16 h達(dá)高峰a大乳日韩人妻无码网站。

Based on regression analysis between PAR attenuation coefficients, euphotic depths, secci disc and main light attenuators, phytoplankton and organic suspended solid play a main role in regulating the attenuation of light.

對PAR衰減系數(shù)国产精品偷伦视频观看免费、真光層深度、透明度等表觀光學(xué)參數(shù)與主要水色因子進行相關(guān)分析發(fā)現(xiàn)欧美一区黄片，水體中浮游藻類和有機顆粒物對西湖水體光學(xué)性質(zhì)影響最大中国一级特黄真人高清aa大片。

Parakoloutheo {par-ak-ol-oo-theh'-o} from 3844 and 190; TDNT - 1:215,33; v AV - follow 1, have understanding 1, attain 1, fully know 1; 4 1 to follow after 1a so to follow one as to be always at his side 1b to follow close, accompany 2 metaph.

相關(guān)經(jīng)文回前一頁 3877 parakoloutheo {par-ak-ol-oo-theh'-o} from 3844 and 190； TDNT - 1：215Wwwav日韩黄色毛片，33色中射网址；動詞 AV - follow 1， have understanding 1人人爱人人操av， attain 1国产一区二区免费在线观看， fully know 1； 4 1 跟在某人之后 1a 跟在某人之后一级黄片免费视频，永遠(yuǎn)站在他那邊 1b 緊緊跟隨91草白白色视频在线观看，陪同 2 隱喻。