西藏横断山区溪流细菌beta多样性组分对气候和水体环境的响应

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李明家¹^,², 吴凯媛¹^,³, 孟凡凡¹^,², 沈吉¹^,², 刘勇勤²^,⁴, 肖能文⁵^,^*(

), 王建军¹^,²^,^*(

)

Beta diversity of stream bacteria in Hengduan Mountains: The effects of climatic and environmental variables

Mingjia Li¹^,², Kaiyuan Wu¹^,³, Fanfan Meng¹^,², Ji Shen¹^,², Yongqin Liu²^,⁴, Nengwen Xiao⁵^,^*(

), Jianjun Wang¹^,²^,^*(

)

图4. 当地环境因子(L)、气候因子(C)和空间因子(S)对两个流域细菌beta多样性、周转组分和嵌套组分的解释比例(小于0的值未显示)。左上方的面板是一般示意图。每类因子的单独解释由三角形的三个角表示。三角形的边和中心分别表示由两个或三个因素共同解释的变异百分比。(a)、(b)、(c)分别为澜沧江流域的细菌总beta多样性、周转组分和嵌套组分; (d)、(e)、(f)分别为怒江流域的细菌总beta多样性、周转组分和嵌套组分。

Fig. 4. The relative importance of environmental (L), climate (C) and spatial (S) factors in explaining the variance in bacterial beta diversity and its components in Nujiang River and Lancang River catchments. The top-left panel is the general outline. The pure variation explained by each factor is represented by the edges of the triangle. The sides and middle of the triangles indicate the percentages of variation explained by interactions of two or all factors, respectively. (a) Total beta diversity, (b) Turnover component and (c) Nestedness component in Lancang catchment. (d) Total beta diversity, (e) Turnover component and (f) Nestedness component in Nujiang catchment.