干旱区生态环境知识资源中心(Arid): 辽西半干旱地区油松人工林天然更新的影响因子研究

Arid

	辽西半干旱地区油松人工林天然更新的影响因子研究
其他题名	Effecting Factors of Natural Regeneration of Pinus tabulaeformis Plantation in Semiarid Region, Western Lioaning
	刘明国; 殷有; 孔繁轼; 卢国珍; 张连生
来源期刊	沈阳农业大学学报
ISSN	1000-1700
出版年	2014
卷号	45 期号:4 页码:418-423
中文摘要	为了给辽西半干旱地区油松林的科学经营提供理论依据,采用标准地调查观测的方法,研究林况、地况因子对辽西半干旱地区油松人工林天然更新的影响。结果表明:对天然更新幼树株数影响较大的因子为微地形、林分郁闭度、坡向和土层厚度,对更新幼树生长影响较大的因子为林分郁闭度、灌木盖度和土层厚度。林分郁闭度为影响辽西地区油松天然更新的关键因子,郁闭度大于0.7时几乎没有更新幼树,郁闭度小于0.3时幼树分布不均匀;坡向与土层厚度构成了辽西油松人工林天然更新的主导立地因子,阳坡天然更新不能成功进行,适宜的立地条件是实现油松天然更新的前提;侵蚀沟对油松天然更新有着显著影响,侵蚀沟内更新幼树株数比正常坡面高160.2%;林下灌草有时也会对油松天然更新产生重要影响。
英文摘要	In order to provide theoretical basis for scientific managemeng of Pinus tabulaeformis plantation, the effects of forest condition factors and site factors on the natural regeneration of Pinus tabulaeformis plantation were studied by employing the survey and observation of sample plots. The result showed that microtopography, crown closure, aspect of slope and thickness of soil layer had more obvious effects on the sapling number from natural regeneration. Crown closure, shrub coverage and thickness of soil layer had more obvious effects on the sapling growth. Crown closure played a crucial role in the natural regeneration. When crown closure exceeded 0.7, there were very few saplings, but when the degree of closure was below 0.3, the distribution of of saplings was uneven. The slope and thickness of soil layer were dominant site factors affecting the natural regeneration, and the natural regeneration would be very difficult on sunny slope. Erosion gully had a significant influence on the natural regeneration, the sapling number was 160.2% higher in the gully than that on the normal slope. Underplant coverage had an important impact on the natural regeneration in some cases.
中文关键词	林况因子 ; 立地因子 ; 天然更新 ; 油松人工林 ; 辽西半干旱地区
英文关键词	forest condition factors site factors natural regeneration pinus tabulaeformis plantation semiarid region in Western Liaoning
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Biochemistry & Molecular Biology
CSCD记录号	CSCD:5265392
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378822
作者单位	刘明国, 沈阳农业大学林学院, 沈阳, 辽宁 110161, 中国.; 殷有, 沈阳农业大学林学院, 沈阳, 辽宁 110161, 中国.; 孔繁轼, 辽宁省生态实验林场, 朝阳, 辽宁 122000, 中国.; 卢国珍, 辽宁省干旱地区造林研究所, 朝阳, 辽宁 122000, 中国.; 张连生, 辽宁省建平县森林病虫害防治检疫站, 建平, 辽宁 122400, 中国.
推荐引用方式 GB/T 7714	刘明国,殷有,孔繁轼,等. 辽西半干旱地区油松人工林天然更新的影响因子研究[J],2014,45(4):418-423.
APA	刘明国,殷有,孔繁轼,卢国珍,&张连生.(2014).辽西半干旱地区油松人工林天然更新的影响因子研究.沈阳农业大学学报,45(4),418-423.
MLA	刘明国,et al."辽西半干旱地区油松人工林天然更新的影响因子研究".沈阳农业大学学报 45.4(2014):418-423.