CAJ | 학술논문

对哈尔滨市建成区内0.5 hm2相似林龄的11种城市森林类型进行了林木天然更新调查,结果表明:11种城市森林类型中有6种林下更新数量达到天然更新要求,2种林下更新数量接近天然更新要求.更新树种是以水曲柳(Fraxinus mandshurica)为主的阔叶树种,榆树(Ulmus propinqua)、黄波罗(Phellodendron amurense)更新也很好.各类森林类型林下没有针叶树种的天然更新.蒙古栎(Quecus mongolica)林下没有任何苗木更新,但其他林分林下有蒙古栎更新苗木.对更新苗木进行高度结构和年龄结构测定,结果表明:近4a,水曲柳天然更新数量相对较大,4～7a前黄波罗天然更新数量相对较大.
대합이빈시건성구내0.5 hm2상사림령적11충성시삼림류형진행료림목천연경신조사,결과표명:11충성시삼림류형중유6충림하경신수량체도천연경신요구,2충림하경신수량접근천연경신요구.경신수충시이수곡류(Fraxinus mandshurica)위주적활협수충,유수(Ulmus propinqua)、황파라(Phellodendron amurense)경신야흔호.각류삼림류형림하몰유침협수충적천연경신.몽고력(Quecus mongolica)림하몰유임하묘목경신,단기타림분림하유몽고력경신묘목.대경신묘목진행고도결구화년령결구측정,결과표명:근4a,수곡류천연경신수량상대교대,4～7a전황파라천연경신수량상대교대.
A survey on natural regeneration of 11 urban forest types of similar age, cover an area of 0.5 hectare, was conducted in Harbin City, Heilongjiang Province. Result showed that the densities of natural generation of 6 stand types reached the standard of natural regeneration,and two were close to the standard of natural regeneration. The components of regeneration were deciduous and the main regeneration species was Fraxinus mandshurica, and others were Ulmus propinqua and Phellodendron amurense. Conifer seedlings were not found in all the forests. No regenerating seedlings could be observed in Quercus mongolica forest, but the regenerating seedlings of Q. mongolica were found in other forests. The height structure and age structure of seedlings showed that more generating seedlings of F. mandshurica occurred in recent four years and more generating seedlings of P. amurense appeared four to seven years ago.