防护林科技
防護林科技
방호림과기
Protection Forest Science and Technology
2015年
11期
48-50
,共3页
蒙古栎%间伐抚育%龄级%种群变化规律
矇古櫟%間伐撫育%齡級%種群變化規律
몽고력%간벌무육%령급%충군변화규률
Quercus mongolica%tending thinning%age class%variation regularity of population
从蒙古栎林的径阶结构、林龄和分布株数出发，研究了不同间伐强度对种群密度、蓄积量、灌草生物量的影响。结果表明：受保留植株的限制，与对照相比，弱度间伐蓄积量有所提高，中度间伐蓄积量提高最为显著，重度间伐出现总蓄积量显著降低，但灌木和草本生物量相对较高。不同试验处理中，中度间伐抚育强度大，径级株数最多，对蒙古栎种群龄级株数的影响显著。因此，推荐中度间伐抚育技术措施，兼顾蓄积量、立木材质及林下灌草生物量，以提高蒙古栎林的经济效益和生态效益。
從矇古櫟林的徑階結構、林齡和分佈株數齣髮，研究瞭不同間伐彊度對種群密度、蓄積量、灌草生物量的影響。結果錶明：受保留植株的限製，與對照相比，弱度間伐蓄積量有所提高，中度間伐蓄積量提高最為顯著，重度間伐齣現總蓄積量顯著降低，但灌木和草本生物量相對較高。不同試驗處理中，中度間伐撫育彊度大，徑級株數最多，對矇古櫟種群齡級株數的影響顯著。因此，推薦中度間伐撫育技術措施，兼顧蓄積量、立木材質及林下灌草生物量，以提高矇古櫟林的經濟效益和生態效益。
종몽고력림적경계결구、림령화분포주수출발，연구료불동간벌강도대충군밀도、축적량、관초생물량적영향。결과표명：수보류식주적한제，여대조상비，약도간벌축적량유소제고，중도간벌축적량제고최위현저，중도간벌출현총축적량현저강저，단관목화초본생물량상대교고。불동시험처리중，중도간벌무육강도대，경급주수최다，대몽고력충군령급주수적영향현저。인차，추천중도간벌무육기술조시，겸고축적량、립목재질급림하관초생물량，이제고몽고력림적경제효익화생태효익。
From the diameter class structure,stand age and distribution of the number of trees for Quercus mongoli-ca ,effects of different thinning intensities on the population density,the stock volume,shrub and grass biomass were discussed.Result shows that the strength thinning was restricted by reserved number of trees;compared with the CK,stock volume increased by adopting weak thinning;stock volume increased significantly by adopting moderate thinning;severe thinning showed significant decrease.Shrubs and herb have higher biomass.Among different ex-periments,moderate thinning have great tending strength,number of diameter class are the maximum;it is signifi-cant for tending thinning to numbers in age class of the populations for Quercus mongolica .Taking into account the stock volume,material of live tree & biomass understory shrub and grass,so as to improve the economic and ecolog-ical benefits of Quercus mongolica forests.
