中国木材资源利用管理政策体系

中国林木资源利用管理政策主要包括森林采伐限额管理、凭证采伐林木制度、年度木材生产计划管理、木材运输管理和木材经营加工管理等内容,该文在参考《中华人民共和国森林法》和《中华人民共和国森林法实施条例》等法规和政策的基础上,梳理了中国木材资源利用管理政策,以促进国家木材政策体系的完善

人类学的中国话语——第六届人类学高级论坛圆桌论坛纪实

>徐新建:各位朋友:今天上午的圆桌论坛现在开始。很高兴会务秘书处让我来做主持。在我理解中,主持就是一个为这个圆桌服务的司仪。我就尽量把它做得好一点,在掌握时间和发言顺序的同时做一些串联和点评。先说明一下,这个圆桌论坛尽管我们已经开了很多届,每一届都非常的成功,但这一届有点仓促和变化。第一是人数比往届圆桌的发言人多了一倍,那么就是说肯

北疆早熟棉区高产优质栽培技术体系集成与示范推广

本成果因地制宜实施、总结、改进棉花栽培技术规程,建立高产优质高效适耗栽培模式与技术体系;建立棉花目标产量,因土优化平衡施肥适用技术与棉花专用长效复合肥合理使用技术,把原来的氮、磷配比1:0.57调整为N：P_2O_5为1:0.42～0.5;选育、示范、扩繁抗病、早熟、高产、优质、强适的主栽品种,选择方向与科学调整产量结构;探索提出棉花播种适期及改进宽播技术,一播全苗;示范应用病毒农药及其生物防治技术,实施综合有效防治棉花病虫害措施,重点遏控棉铃虫加剧发生和枯黄萎病蔓延危害;研究、监测、跟踪高产棉田群体生育动态,改进肥水运筹、化学调控、调节灌溉、栽培管理的综合调控技术

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^

Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024

We present a measurement of the integrated luminosity e+e- of collision data collected by the BESIII detector at the BEPCII collider at a center-of-mass energy of Ecm = 3.773 GeV. The integrated luminosities of the datasets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 were determined to be 4.995±0.019 fb-1, 8.157±0.031 fb-1, and 4.191±0.016 fb-1, respectively, by analyzing large angle Bhabha scattering events. The uncertainties are dominated by systematic effects, and the statistical uncertainties are negligible. Our results provide essential input for future analyses and precision measurements