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      DRL26C 樹木生長(zhǎng)監(jiān)測(cè)儀用于監(jiān)測(cè)樹干的生長(zhǎng)微變化，使樹的生長(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)。

主要優(yōu)點(diǎn)：

適用于直徑大于8cm的任何樹干；

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

產(chǎn)地：捷克

參考文獻(xiàn)

1.Augustaitis, A. (2021). Intra-Annual Variation of Stem Circumference of Tree Species Prevailing in Hemi-Boreal Forest on Hourly Scale in Relation to Meteorology, Solar Radiation and Surface Ozone Fluxes. Atmosphere 12, 1017.

2.Bu?ková, R., Acosta, M., Da?enová, E., Pokorny, R., and Pavelka, M. (2015). Environmental factors influencing the relationship between stem CO2 efflux and sap flow. Trees 29, 333–343.

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4.Forner, A., Valladares, F., Bonal, D., Granier, A., Grossiord, C., and Aranda, I. (2018). Extreme droughts affecting Mediterranean tree species’ growth and water-use efficiency: the importance of timing. Tree Physiology 38, 1127–1137.

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6.Je?ík, M., Bla?enec, M., Mezei, P., Sedmáková, D., Sedmák, R., Fleischer, P., Fleischer, P., Bo?e?a, M., Kurjak, D., St?elcová, K., et al. (2021). Influence of weather and day length on intra-seasonal growth of Norway spruce (Picea abies) and European beech (Fagus sylvatica) in a natural montane forest. Can. J. For. Res. 51, 1799–1810.

7.Le?tianska, A., Fleischer, P., Mergani?ová, K., Fleischer, P., and St?elcová, K. (2020a). Influence of Warmer and Drier Environmental Conditions on Species-Specific Stem Circumference Dynamics and Water Status of Conifers in Submontane Zone of Central Slovakia. Water 12, 2945.

8.Le?tianska, A., Fleischer, P., Fleischer, P., Mergani?ová, K., and St?elcová, K. (2020b). Interspecific variation in growth and tree water status of conifers under water-limited conditions. Journal of Hydrology and Hydromechanics 68, 368–381.

9.Maicher, V., Sáfián, S., Murkwe, M., Delabye, S., Przyby?owicz, ?., Potocky, P., Kobe, I.N., Jane?ek, ?., Mertens, J.E.J., Fokam, E.B., et al. (2020). Seasonal shifts of biodiversity patterns and species’ elevation ranges of butterflies and moths along a complete rainforest elevational gradient on Mount Cameroon. Journal of Biogeography 47, 342–354.

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.

11.Obojes, N., Meurer, A., Newesely, C., Tasser, E., Oberhuber, W., Mayr, S., and Tappeiner, U. (2018). Water stress limits transpiration and growth of European larch up to the lower subalpine belt in an inner‐alpine dry valley. The New Phytologist 220, 460.

12.Qian-Wen, J.I., Cheng-Yang, Z., Lei, Z., and Fa-Xu, Z. (2020). Stem radial growth dynamics of Pinus sylvestris var. mongolica and their relationship with meteorological factor in Saihanba, Hebei, China. Chinese Journal of Plant Ecology 44, 257.

13.Raffelsbauer, V., Spannl, S., Pe?a, K., Pucha-Cofrep, D., Steppe, K., and Br?uning, A. (2019). Tree Circumference Changes and Species-Specific Growth Recovery After Extreme Dry Events in a Montane Rainforest in Southern Ecuador. Frontiers in Plant Science 10.

14.?eháková, K., ?apková, K., Altman, J., Dan?ák, M., Majesky, ?., and Dole?al, J. (2021). Contrasting Patterns of Soil Chemistry and Vegetation Cover Determine Diversity Changes of Soil Phototrophs Along an Afrotropical Elevation Gradient. Ecosystems 1–17.

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16.Vospernik, S., Nothdurft, A., and Meht?talo, L. (2020). Seasonal, medium-term and daily patterns of tree diameter growth in response to climate. Forestry: An International Journal of Forest Research 93, 133–149.

17.Winters, G., Otieno, D., Cohen, S., Bogner, C., Ragowloski, G., Paudel, I., and Klein, T. (2018). Tree growth and water-use in hyper-arid Acacia occurs during the hottest and driest season. Oecologia 188, 695–705.