1) reforestation percentage
更新成林率
1.
In this paper, we discuss the identification of the reforestation percentage for the nonstationary forest evolution systems.
讨论了非定常森林发展系统中的更新成林率的辩识问题。
2) success ratio of position updating
位置更新成功率
3) regeneration planting
更新造林
1.
Natural regeneration intensity on cut-over area is 690 trees·hm-2,and artificial regeneration planting ground 575 trees·hm-2,pine under Pinus tabulaeformis and Pinus densiflora 181 trees·hm-2,other species 295 trees·hm-2.
hm-2,人工更新造林地为575株。
5) gap regeneration
林隙更新
1.
Gap regeneration in a broadleaved Korean pine forest in Changbai Mountain Natural Reserve.;
长白山自然保护区阔叶红松林林隙更新的研究
2.
The paper introduces the functions of gap size, gap age and gap border trees that have done in gap regeneration, and summarizes the circumstance of gap regeneration theory applying in forest practice.
文中综述了林隙大小、林隙年龄和林隙边缘木在天然林更新过程中所起的作用,以及林隙更新理论在林业生产中实际应用情况,指出林隙更新理论在森林经营上的应用是未来林隙研究中的重要方面。
6) forest regeneration
森林更新
1.
Study on Relationship of Frozen Soil and Forest Regeneration of Daxinganling Forest Area;
大兴安岭林区冻土与森林更新关系的探讨
2.
Seed quality and forest regeneration of a 60-year Quercus liaotungensis forest in the Ziwuling region,northwestern China.
子午岭60年辽东栎林种子质量与森林更新
3.
As an important part of forest ecosystem, stump reflects the values of economy and ecology, which affects the utilization of stands, and has influence on many aspects in forest, such as forest regeneration, wild life and nutrient cycling.
伐根体现了经济和生态双重价值,它既影响立木的利用,又是森林生态系统的重要组成部分,对森林更新、林中野生动物、养分循环均产生影响。
补充资料：更新投资收益率
更新投资收益率
【更新投资收益率】一种用于设备更新投资决策经济分析的财务评价指标。其计算公式如下:更新投资二收益率下年度下年度设备运行收益十可避免的损耗 下年度运行收益一和设备可避免损耗部分的税金这个比率说明更新投资可以带来收益的程度。根据该指标所显示的数据，可帮助决策者按所拥有的资金数量正确选择设备更新的次序。
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