1) high yield Chinese fir plantation
高产杉木林
2) Fast growth and high production Chinese fir forest
杉木速生丰产林
3) Cunninghamia lanceolata forest
杉木林
1.
Based on a field investigation, the early recovery vegetation characteristics of Pinus massoniana forest, Cunninghamia lanceolata forest and evergreen broad-leaved forest, which had been burned severely one year before, in Maoan Forestry Centre of Chongqing were analyzed.
通过对重庆市北碚区茅庵林场马尾松林,杉木林和常绿阔叶林3种群落火烧1年后的迹地以及未火烧林地的群落学调查,研究了高强度火干扰后不同群落早期恢复植被特征。
2.
And all the 30 plots were divided into four types of landscape forests: broad-leaved forest,coniferous and broad-leaved forest,Pinus massoniana forest and Cunninghamia lanceolata forest.
杉木林物种数量明显偏少,林分密度大,达到3 967株。
3.
Based on the data of gaps in Cunninghamia lanceolata forest in Ancaoxia,China,the size and formation pattern of gaps as well as the quantitative characteristics of gap makers were studied.
根据安曹下杉木丰产林全林林窗样地调查资料,分析了杉木林林窗的大小结构、形成方式及林窗形成木的数量特征。
4) Chinese fir
杉木林
1.
Soil samples were collected in Nanping,Fujian Province(117°57′E,26°28′N)and characteristics of soil inorganic nitrogen were investigated for different Chinese fir plantations of 11-,21-,28-,40-,88-year-old,compared with a mixed broad-leaved forest and a 2-year-old cleared area from an 86-aged Chinese fir plantation,which were both adjacent to the 88-aged Chinese fir stand.
在福建南平杉木林中心产区,选取11、21、28、40、88年生杉木人工林以及采伐迹地、杂木林为研究对象,研究不同年龄杉木林土壤无机氮的差异。
2.
The carbon stock and carbon sequestration of Chinese fir in different generations were investigated in Ancaoxia and Denke of Xihou Village, Nanping City, Fujian Province.
对福建南平市王台镇溪后村安曹下及邓窠的不同代数杉木林C库和C吸存的研究结果表明,1代杉木林C库总量为251。
3.
<Abstrcat>Based on the observed date, the efficiency of temperature and humidity of Chinese fir plantation has been analyzed.
结果表明:由于杉木林冠层的作用,使杉木林内形成了温度变化平缓,林冠层对地表温和土温的调节作用远大于气温;由于冠层的阻滞作用,使林内风速很小,乱流交换较弱,林木蒸腾蒸发的水气不易散失,造就了林内水气充沛、空气湿润的特征;杉木林内显热能的日平均波动在2%,杉木林内环境的潜热能占总温湿能的8%左右;杉木林具有这样的温湿特征是杉木林的结构特征、杉木林生理功能与环境相互作用的结果。
5) Chinese fir forest
杉木林
1.
Forest resources inventories materials and data from China Forest Ecosystem Location Research Network(CFERN) were prepared for estimating 4 periods of carbon storage of Chinese fir forest ecosystem from 1977 to 2003.
利用中国4次森林资源清查资料以及中国森林生态系统定位观测研究站(CFERN)的实测数据,估算了中国1977-2003年4个时期杉木林生态系统的碳储量,分析了其年龄结构特征、垂直分配结构特征、时空动态格局和贮碳潜力。
2.
A comparative study was conducted for 2 a on soil biological activities of a 70-year-old fact-growingand high-yield Chinese fir forest (hillside), and a 32-year-old"young forest" of Chinese fir (hillside), whichwere originally occupied by broadleaved forests in Ancaoxia, Xihou, Nanping.
32a生杉木“青年林”土壤生物学活性下降则更为明显，说明从杉木取代阔叶林（头耕土）起，土壤生化活性及土壤肥力就存在明显下降现象，轮伐期缩短或林地连栽杉木代数增加，而不采取恢复地力措施，杉木林地地力衰退将更为明显。
6) Chinese fir plantation
杉木林
1.
Soil active organic matter in broadleaved forest and Chinese fir plantation in subtropical region of China
亚热带地区阔叶林与杉木林土壤活性有机质比较
2.
Chinese fir plantation and Masson pine plantation are two fire-prone fuel types distributed in Zhangping city,their fuel loadings determine fire behavior.
杉木林和马尾松是分布于漳平市的两种易燃的可燃物类型。
3.
Based on the data collected from located observation in successive years, comparative analyses were made in Chinese fir plantation at Huitong, Hunan.
多年定位观测的数据对比分析结果表明:湖南会同22年生杉木林采伐前,林地土壤(0～60cm)层中的C储量为160。
补充资料：茶树高产育种
茶树高产育种
high-yield breeding of tea plant
茶树高产育种(high一yield breeding oftea plant)以选育产t高的茶树新品种为主要目标的一种育种方法，包括改善产量结构的育种和改进生理过程的株型育种。产t结构是指茶树在单位面积内的芽叶数，和芽叶重t，以及单位时间内的生长速度和全年生长期的长短，即“多、重、快、长”四个因子。多和重是属于空间范围;快和长是属于时间范礴。四项因素同时具备而且有一项因素突出，就可得到高产。例如以一定芽数为基础增加芽重，或在芽，基础上增加芽数。茶树芽叶数和芽重在达到一定水平后.也会出现彼此间的负相关，因此高产育种就要研究构成产t因素的基本特征和薄弱环节，以选育水平较高的品种。 20世纪60年代以来.作物育种上的一个重要发展是从重视产t结构到株型选育.即通过提高作物的光合作用效率，特别是净光合率来选育高产品种，引用株型概念，用以指导茶树育种达到高产的植株形态。茶树是异花授粉作物，在无性系品种间或有性系品种内的株型差异显著，株型不同.形态就不同，它所占据的空间不同而导致产量、品质、适应性的差异。高产的茶树株型结构，是指具有高光合能力、低呼吸消耗、叶面积适当、长相及长势较理想的株型。根据株型理论和已知的研究结果，一般可通过四个方面的测定.即①叶片着生角度，②叶面积指数，③光饱和点或光补偿点，④根系活力。(陈国本)
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