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      DRL26C 樹木生長監測儀用于監測樹干的生長微變化，使樹的生長與水分關系的研究變得更容易和更準確。傳感器為不銹鋼和防紫外線塑料制作，堅固耐用，適合長期監測，無須外接電池或太陽能板，內置鋰電池和數據采集器，可記錄50000個數據，通過紅外數據輸出。儀器具有較高的分辨率，可精確測量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提供重要數據依據。

主要優點：

適用于直徑大于8cm的任何樹干；

傳統機械與電子技術相結合，測量更準確；

精度較高，分辨率1微米；

無損安裝固定；

導出數據格式為TXT、Excel

技術參數：

量程：64mm生長量變化監測

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

數據容量：50000個數據（每小時記錄1次則可自動記錄4年）

采樣間隔：10min-24hrs

電池壽命：1hr間隔5年；10mins間隔3年；待機5.5年

通訊方式：無線紅外傳輸

植物生理生態專業數據下載分析軟件，可進行數據下載、數據在線觀測、柱狀圖、數據修復、統計分析（如每小時平均、每日平均、總計、最小值、最大值、數據相關分析、回歸分析）與圖表展示及系統設置等

可選配MicroLog三通道土壤監測儀，實時、連續、原位監測土壤水分、溫度、水勢的變化

推薦系統：樹木生理生態系統，同時對多棵樹木進行實時在線監測，采集記錄樹木生長、樹皮溫度（陰面和陽面）、樹干莖流等三個生理指標的數據

產地：捷克

參考文獻

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.

3.Dolezal, J., Kopecky, M., Dvorsky, M., Macek, M., Rehakova, K., Capkova, K., Borovec, J., Schweingruber, F., Liancourt, P., and Altman, J. (2019). Sink limitation of plant growth determines tree line in the arid Himalayas. Functional Ecology 33, 553–565.

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.

5.Jamnická, G., Kon?pková, A., Fleischer, P., Kurjak, D., Petrík, P., Petek-Petrik, A., Húdoková, H., Homolová, Z., Je?ík, M., and Ditmarová, ?. (2020). Physiological vitality of Norway spruce (Picea abies L.) stands along an altitudinal gradient in Tatra National Park. Central European Forestry Journal 66.

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.

15.Szymczak, S., H?usser, M., Garel, E., Santoni, S., Huneau, F., Knerr, I., Trachte, K., Bendix, J., and Br?uning, A. (2020). How Do Mediterranean Pine Trees Respond to Drought and Precipitation Events along an Elevation Gradient? Forests 11, 758.

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.