Results 71 to 80 of about 579 (113)

黄土高原碳水复合利用效率时空演变及其驱动机制

open access: yesShuitu Baochi Xuebao
目的为明确黄土高原生态系统碳水复合利用效率(COM)的时空演变特征及其驱动机制。方法以黄土高原为研究对象,基于改进的CASA模型模拟区域内的净初级生产力,并计算2002—2022年COM,分析碳水利用效率的时空分布特征及其变化趋势;采用最优参数地理探测器(OPGD)和偏最小二乘结构方程模型(PLS-SEM)探讨COM的驱动方式及影响路径。结果1)改进的CASA模型有效提升NPP估算精度(R2由0.53上升至0.63)。2)2002—2022年,黄土高原COM整体呈改善趋势,改善区域整体占比87.8%。3)
胡玥灿   +3 more
doaj  

[Advances in the application of transoral robotic surgery]. [PDF]

open access: yesLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Xue J, Zhang D, Xu C, Tao L.
europepmc   +1 more source

[Expert Consensus on the Clinical Practice of Child Life Services]. [PDF]

open access: yesSichuan Da Xue Xue Bao Yi Xue Ban
Nursing Group Of Chinese Pediatric Society Chinese Medical Association   +1 more
europepmc   +1 more source

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