问题:森林认证的目的主要是提高森林的经营水平,以实现森林(),保证、再...
Monday, September 12, 2022
问题:数量成熟是指林分蓄积或材积平均生长量达到最大时的状态。当到达数量成熟龄时,平均生长量和连年生长量()...
Thursday, October 27, 2022
Wednesday, May 17, 2023
Thursday, September 15, 2022
问题:以下()因子会直接影响森林自然成熟龄的早晚。A、树种B、起源C、立地条件D、种群与个体...
Monday, March 18, 2024
Friday, September 16, 2022
Thursday, February 29, 2024
Wednesday, May 17, 2023
Thursday, September 15, 2022
问题:补充主伐是按各经营类型可以进行采伐利用的疏林、散生木和母树,分别计算其采伐量。...
Sunday, February 12, 2023
问题:森林资源档案成果,结合计算机管理的特点,其成果应包括的主要内容?...
Wednesday, April 26, 2023
Friday, September 16, 2022
Monday, September 12, 2022
Sunday, May 7, 2023
Wednesday, September 14, 2022
Monday, March 18, 2024
Wednesday, April 26, 2023
Sunday, February 12, 2023
Wednesday, September 14, 2022
Wednesday, September 14, 2022