2) vegetation restoration years
植被恢复年限
1.
Taking the pasture zone of Loess gully region(Guyuan Area of Ningxia Hui Municipality) as a case study,this paper selected eight research sites according to the different vegetation restoration years(2,5,12,24,35,55,75 a and cropland control) to study quantitative characteristics and dynamic change of soil seed bank germination through field survey and a laboratory experiment of seed germination.
采用野外定点采样与室内土壤种子萌发试验相结合的研究方法,选取黄土丘陵区典型草原带宁夏固原地区不同植被恢复年限(2,5,12,24,35,55,75 a)及当年农地(对照)的8个样地,研究该区土壤种子库萌发数量特征及动态变化。
4) The 30th Anniversary of the Restoration of the National College Entrance Examination
恢复高考30周年
5) The 30~(th)Anniversary of the Restoration of the National College Entrance Examination System
恢复高考30年
6) Intrusion containment and recovery
入侵限制和恢复
补充资料：年限
1.规定的或作为一般标准的年数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条