干旱区生态环境知识资源中心(Arid): 红花尔基沙地樟子松林天然更新特征

Arid

	红花尔基沙地樟子松林天然更新特征
其他题名	Natural regeneration characteristics of Pinus sylvestris var. mongolica forests on sandy land in Honghuaerji, China
	朱教君 ; 康宏樟 ; 谭辉 ; 许美玲 ; 王君
来源期刊	Journal of Forestry Research
ISSN	1007-662X
出版年	2005
卷号	16 期号:4 页码:253-259
中文摘要	樟子松是沙地主要针叶造林树种,沙地樟子松林天然分布于内蒙古自治区呼伦贝尔市红花尔基;红花尔基地区的气候特点为高纬度、低海拔、寒冷半湿润、短无霜期.沙地樟子松于20世纪50年代在科尔沁沙地引种成功,但一直不能天然更新,并于20世纪90年代初出现了生长衰退、枯梢直至死亡的现象,而天然沙地樟子松林无论在更新还是生长上却一直处于健康状态.为了认识天然沙地樟子松林天然林的更新特征,于2004年7-8月对红花尔基天然沙地樟子松林的20块样地、3种林窗(2 圆形、5窄长方形、3宽长方形)樟子松天然更新指数进行了调查.结果表明,林龄大的林分(大于50年)总平均更新指数高于林龄小的林分(小于50年),最大更新指数达29株m-2.更新的苗龄绝大多数小于10年生.回归分析表明,林龄是决定天然更新的主要因子;虽然樟子松是阳性树种,但林冠的郁闭度似乎对天然更新没有直接影响.林窗更新调查结果表明,林窗内更新指数都较高;对于圆形林窗更新高峰出现在林窗南缘和东缘,而对于窄长方形林窗,更新高峰则出现于东缘;而且更新苗龄相对较大(最大达38年).上述结果表明樟子松更新苗具有一定的耐阴性,但如果没有较大林窗或较大的其它干扰,如火、风雪害或皆伐等,更新苗木将很难进行入主林冠层.
英文摘要	Natural regeneration in Mongolian pine, Pinus sylvestris var. mongolica, forest at Honghuaerji of China (the original of the natural Mongolian pine, forest on sandy land) was studied in 2004. The total mean values of regeneration indexes were higher in mature stands (more than 80% individual stems were older than 50 years), the maximum of regeneration index reached 29 seedlings·m-2, with lowest values in the younger stand, e.g., in 32-year old and 43-year old stands. The stand age was an important factor determining the natural regeneration, which was the best in the older stands in this investigation (e.g. about 80-year old). The regeneration index seemed not to be closely in relation to canopy openness although Mongolian pine is a photophilic tree species. In each type of gaps, natural regeneration was very well. Regeneration indexes were satisfactory at the south and east edges in the circle gaps; and at the east edge of the narrow-square gaps. Results indicated that Mongolian pine, seedlings could endure shading understory, but it would not enter the canopy layer without gap or large disturbance, e.g., fire, wind/snow damage or clear cutting etc. These results may provide potentially references to the management and afforestation of Mongolian pine, plantations on sandy land in arid and semi-arid areas. Researches such as the comprehensive comparisons on regeneration, structure and ecological conditions and so on between natural Mongolian pine, forests and plantations should be conducted in the future.
中文关键词	樟子松 ; 沙地 ; 天然更新 ; 林分郁闭度 ; 林窗
英文关键词	Pinus sylvestris var. mongolica Mongolian pine Sandy land Natural regeneration Canopy openness Forest gap Regeneration index
语种	英语
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:2130226
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205889
作者单位	1.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, LiaoNing 110061, China; 2.Honghuaerji Forestry Bureau, Inner Mongolia, Hulunbeier, NeiMengGu 021112, China
推荐引用方式 GB/T 7714	朱教君,康宏樟,谭辉,等. 红花尔基沙地樟子松林天然更新特征[J],2005,16(4):253-259.
APA	朱教君,康宏樟,谭辉,许美玲,&王君.(2005).红花尔基沙地樟子松林天然更新特征.Journal of Forestry Research,16(4),253-259.
MLA	朱教君,et al."红花尔基沙地樟子松林天然更新特征".Journal of Forestry Research 16.4(2005):253-259.