1) Pinus tabulaeformis Carr. population of silvicultural pureforest
油松人工纯林种群
2) Pinus tabulaeformis plantation
油松人工林
1.
Study on characteristics of distribution of rainfall in Pinus tabulaeformis plantation in Daqing-Mountains
大青山区油松人工林降雨分配特征研究
2.
By adopting the concept of space as a substitute for time, a field investigation was conducted in the Malan forest region on Loess Plateau to study the plant species diversity of Pinus tabulaeformis plantations at different restoration stages and the changes of soil fertility.
通过样地调查,以空间代替时间的方法,对黄土高原马栏林区不同恢复阶段油松人工林群落物种多样性和土壤养分的变化进行了研究。
3.
The Pinus tabulaeformis plantation is a low and middle hill type of the zonal vegetation and is distributing in the low hill shade slope and half shade slope in Beijing mountainous areas.
2005年和2006年夏季,对北京密云水漳村和昌平小宫门低山阴坡厚土油松人工林林分的生长及其林下植物多样性变化情况进行抚育间伐后的调查研究。
3) Artificial Pinus tabulaeformis forest
人工油松林
1.
Litter-fall and the water-holding characteristics of litter in a 23-year-old artificial Pinus tabulaeformis Forest were studied from September, 2000 to October, 2003.
通过对人工油松林凋落量及其持水性动态变化的监测和研究。
4) Pinus tabulaeformis plantations
油松人工林
1.
Most of Pinus tabulaeformis plantations in northern China have problems with bad timber quality, high stand density, single layered forest structure, and lack of mixture.
我国北方油松人工林普遍存在着林木质量差、林分密度过大、林分稳定性差及林分多样性缺乏等问题。
2.
The carbon density in the Pinus tabulaeformis plantations in this area was ranged from 76.
对木兰林管局油松人工林19块标准地分林木层、灌木层、草本植物层、枯落物层和土壤层进行了生物现存量的实测与碳储量的研究,结果表明林木层和土壤层的碳储量构成了林分碳储量的主体。
5) P.tabulaeformis plantation
油松纯林
1.
tabulaeformis mixed plantation and P.
通过对 2 0年生的人工阔叶油松混交林和油松纯林的土壤理化性质、水热状况的观测分析 ,试图了解不同林型对土壤条件的影响 ,为今后选择最佳的混交类型 ,保持良好的土壤生态环境 ,提供有益的数据。
6) artificial Pinus tabulaeformis wood
人工油松林地
补充资料：种群增长率(见种群出生率)
种群增长率(见种群出生率)
种群增长率见种群出生率。
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