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东北地区3种桦木木质部导管特征对气候变化响应的趋同与差异
白雨鑫1, 苑丹阳1, 王兴昌1, 刘玉龙2,3, 王晓春1,*()
Comparison of characteristics of tree trunk xylem vessels among three species of Betula in northeast China and their relationships with climate
BAI Yu-Xin1, YUAN Dan-Yang1, WANG Xing-Chang1, LIU Yu-Long2,3, WANG Xiao-Chun1,*()

图4. 3种桦木年轮宽度(RW)与主要导管特征随形成层年龄的变化趋势。Kh, 理论导水率; Ks, 特异性导水率; MVA, 平均导管面积; RCTA, 导管占比; TVA, 导管总面积; VD, 导管密度; VN, 导管数量。树种代码同表1。

Fig. 4. Trends of tree ring width (RW) and the main vessel traits for three birch species. Kh, theoretical hydraulic conductivity; Ks, specific hydraulic conductivity; MVA, mean vessel area; RCTA, mean percentage of conductive area within xylem; TVA, total vessel area; VD, vessel density; VN, number of vessels. See Table 1 for the codes of tree species.