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DRL26C 樹(shù)木生長(zhǎng)監(jiān)測(cè)儀用于監(jiān)測(cè)樹(shù)干的生長(zhǎng)微變化，使樹(shù)的生長(zhǎng)與水分關(guān)系的研究變得更容易和更準(zhǔn)確。傳感器為不銹鋼和防紫外線塑料制作，堅(jiān)固耐用，適合長(zhǎng)期監(jiān)測(cè)，無(wú)須外接電池或太陽(yáng)能板，內(nèi)置鋰電池和數(shù)據(jù)采集器，可記錄50000個(gè)數(shù)據(jù)，通過(guò)紅外數(shù)據(jù)輸出。儀器具有較高的分辨率，可精確測(cè)量1微米莖桿的微變化，為研究樹(shù)木在白天，夜晚等氣候條件差異下的生長(zhǎng)提供重要數(shù)據(jù)依據(jù)。

主要特點(diǎn)：

• 適用于直徑大于8cm的任何樹(shù)干；
• 傳統(tǒng)機(jī)械與電子技術(shù)相結(jié)合，測(cè)量更準(zhǔn)確；
• 精度較高，分辨率1微米；
• 無(wú)損安裝固定；
• 導(dǎo)出數(shù)據(jù)格式為T(mén)XT、Excel

技術(shù)參數(shù)：

• 量程：64mm生長(zhǎng)量變化監(jiān)測(cè)
• 分辨率：0.001mm
• 誤差：量程2%
• 作用力：15-20N
• 工作溫度：-30-60℃
• 工作濕度：0-100%
• 溫度傳感器精度：±2℃
• 重量：300g
• 數(shù)據(jù)容量：50000個(gè)數(shù)據(jù)（每小時(shí)記錄1次則可自動(dòng)記錄4年）
• 采樣間隔：10min-24hrs
• 電池壽命：1hr間隔5年；10mins間隔3年；待機(jī)5.5年
• 通訊方式：無(wú)線紅外傳輸

?植物生理生態(tài)專業(yè)數(shù)據(jù)下載分析軟件，可進(jìn)行數(shù)據(jù)下載、數(shù)據(jù)在線觀測(cè)、柱狀圖、數(shù)據(jù)修復(fù)、統(tǒng)計(jì)分析（如每小時(shí)平均、每日平均、總計(jì)、最小值、最大值、數(shù)據(jù)相關(guān)分析、回歸分析）與圖表展示及系統(tǒng)設(shè)置等

?可選配MicroLog三通道土壤監(jiān)測(cè)儀，實(shí)時(shí)、連續(xù)、原位監(jiān)測(cè)土壤水分、溫度、水勢(shì)的變化

?推薦系統(tǒng)：樹(shù)木生理生態(tài)系統(tǒng)，同時(shí)對(duì)多棵樹(shù)木進(jìn)行實(shí)時(shí)在線監(jiān)測(cè)，采集記錄樹(shù)木生長(zhǎng)、樹(shù)皮溫度（陰面和陽(yáng)面）、樹(shù)干莖流等三個(gè)生理指標(biāo)的數(shù)據(jù)

應(yīng)用案例

左圖：3月20日–5月20日河北塞罕壩樟子松徑向日動(dòng)態(tài)變化；右圖：9月20日–11月20日河北塞罕壩樟子松徑向日動(dòng)態(tài)變，引自北京大學(xué)生態(tài)研究中心2020年《植物生態(tài)學(xué)報(bào)》研究論文

產(chǎn)地：捷克

參考文獻(xiàn)

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10.Nalevanková, P., Je?ík, M., Sitková, Z., Vido, J., Le?tianska, A., and St?elcová, K. (2018). Drought and irrigation affect transpiration rate and morning tree water status of a mature European beech (Fagus sylvatica L.) forest in Central Europe. Ecohydrology 11, e1958.

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