預告|GeoInsider在線講座系列第21期:植物在長期高氮環(huán)境的氮沉降適應性假說-熱帶森林
活動簡介?
GeoInsider Webinar
在線講座系列第21期?
題??? 目:Plant acclimation to long-term high nitrogen deposition in an N-rich tropical forest, PNAS paper?
報告人:Dr. Xiankai Lu, South China Botanical Garden, Chinese Academy of Sciences/Stanford University
??????????????魯顯楷研究員 中科院華南植物園/斯坦福大學訪問學者期間成果?
時?? 間:北京時間 5月22日(周五)上午10:00
加州時間5月21日(周四)晚上7:00
悉尼時間5月22日(周五)中午12:00?
參與方式:B站“GeoInsider”直播間平臺,直播間可現(xiàn)場留言提問,進入方式如下二選一:
(a) B站直播間鏈接:https://live.bilibili.com/22243531
(b) B站直播間二維碼:
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Presentation Abstract?
Anthropogenic nitrogen (N) deposition has accelerated terrestrial N cycling at regional and global scales, causing nutrient imbalance in many natural and seminatural ecosystems. How added N affects ecosystems where N is already abundant, and how Plants acclimate to chronic N deposition in such circumstances, remains poorly understood. Here, we conducted an experiment employing a decade of N additions to examine ecosystem responses and Plant acclimation to added N in an N-rich tropical forest. We found that N additions accelerated soil acidification and reduced biologically available cations (especially Ca and Mg) in soils, but Plants maintained foliar nutrient supply at least in part by increasing transpiration while decreasing soil water leaching below the rooting zone. We suggest a hypothesis that cation-deficient Plants can adjust to elevated N deposition by increasing transpiration and thereby maintaining nutrient balance. This result suggests that long-term elevated N deposition can alter hydrological cycling in N-rich forest ecosystems.?
Linkage:
PNAS文章鏈接:https://www.pnas.org/content/115/20/5187.short
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GeoInsider簡介
GeoInsider是一個最初由舊金山灣區(qū)的GeoScience同行自發(fā)形成的公益性交流平臺,定位在頂級的產(chǎn)學研交叉,包括PNS級講座、產(chǎn)業(yè)應用轉(zhuǎn)化、留學Intern教職申請等交流,迄今已邀請發(fā)表過Science、Nature等高水平文章,以及來自Harvard、Berkeley等頂級機構(gòu)的Webinar報告交流,是一個擴大學術(shù)影響力的平臺。
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往期報告

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B站賬號:GeoInsider,賬號里有多期PNS學術(shù)報告視頻以及國外GeoScience大學信息,歡迎粉絲直接進入GeoInsider主頁觀看往期視頻:https://space.bilibili.com/579909660
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致??? 謝
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ü? 報告35分鐘, 留言板&語音提問討論25~45分鐘
ü? 報告期間可在B站直播間留言提問,報告部分結(jié)束依次回答
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B站直播間二維碼:
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