The curves of diurnal variation of Pn and COND were typical double-peaked, and both of Pn and COND decreased gradually with the decrease of SWC.

 
  • 凈光合速率和氣孔導度的日變化曲線(xiàn)都是典型的“雙峰”型曲線(xiàn),且隨著(zhù)土壤含水量的下降都有不同程度的下降。
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