1) Cryptomeria fortunei plantation
柳杉人工林
1.
Base on the data collected from sample plots in Eastern Fujian, the relationship between average stand volume, VIS, height, dominant height, DHB and stand density of Cryptomeria fortunei plantation of 31 years old were studied through a series of mathematical models.
以闽东柳杉人工林为研究对象,研究31年生柳杉人工林不同经营密度与生长之间的关系规律,具体探讨了不同密度与林分平均胸径、树高、立木单株材积、优势高以及蓄积量之间的相关关系,对一系列不同的生产模型,采用单纯形法等数学方法进行拟合,选择出存在显著或者极显著关系的模型,并且从中寻求适合于闽东地区柳杉人工林生长的最优生产模型,从而为当地林业生产中的密度管理和林分生产力的预测提供科学的理论依据。
2.
Based on the survey data of population resources of Cryptomeria fortunei plantations,the Logistic model of predicting C.
根据柳杉人工林种群资源的调查资料， 运用数理统计方法， 建立了柳杉人工林蓄积量预测的 Ｌｏｇｉｓｔｉｃ模型。
3.
With the method of multi-plots,we studied the contents and storages of soil organic carbon(SOC) in 25 years Cryptomeria fortunei plantation(CP) and that cleared for the infancy Cryptomeria fortunei plantation(IP),economics forest(EF),nursery(NU),clear-cut(CC) and farmland(FL) about 5 years.
运用空间代替时间的方法研究了25年生柳杉人工林(对照)采伐后形成的柳杉人工幼龄林、经济林、苗圃地、皆伐迹地、农耕地5种土地利用类型初期土壤有机碳含量和碳储量变化。
2) Cryptomeria fortunei plantations
人工柳杉林
1.
Biomass and soil carbon dynamics in Cryptomeria fortunei plantations.;
人工柳杉林生物量及其土壤碳动态分析
3) Chinese fir plantation
杉木人工林
1.
Nutrient flux and its dynamic change of litterfall in a Chinese fir plantation forest;
杉木人工林凋落物养分通量及其动态
2.
Effects of nitrogen deposition on the soil base cations in Chinese fir plantation;
氮沉降对杉木人工林土壤盐基离子的影响
3.
Litter fall and its seasonal dynamic change of Chinese fir plantation;
杉木人工林凋落物量及其季节动态
4) Cunninghamia lanceolata plantation
杉木人工林
1.
The analysis on integrated management effect of thinning to reduce the occupation for Cunninghamia lanceolata plantations;
杉木人工林降位间伐的综合经营效果分析
2.
Characteristics of soil microbial biomass carbon and nitrogen and their relationships with soil nutrients in Cunninghamia lanceolata plantations.;
杉木人工林土壤微生物生物量碳氮特征及其与土壤养分的关系
3.
Biomass of Cunninghamia lanceolata plantation was investigated on 3 plots with better,middle & poor slope in Jingxi town in Minhou County.
在闽侯县荆溪镇三块立地条件大体属好、中、差不同坡位的杉木人工林样地进行生物量调查,调查结果表明,20年生杉木人工林在不同立地条件下干物质积累量差异显著,下坡干物质积累量(生物量)为154。
5) Chinese Fir
人工杉木林
1.
It can be found that broad-leaved evergreen forest contained more microbial biomass (MBC) and the ease of oxidation of carbon (EOC) compared with Chinese Fir and Masson Pine stands.
采样分析常绿阔叶林、马尾松林和人工杉木林不同层次土壤的活性有机碳含量。
2.
By using orthogonal design, this paper systematically analysed the variation law of fiber morphology of Chinese fir wood from plantations with different ages, densities and growing sites.
应用正交试验设计方法，系统分析了不同林龄、不同立地条件和不同林分密度下人工杉木林木材纤维形态的变异规律。
6) Spruce plantation
人工云杉林
1.
Woodland hydrological effects of spruce plantations and natural secondary series in sub-alpine region of western Sichuan;
川西亚高山人工云杉林和自然恢复演替系列的林地水文效应
2.
The results showed that the number of soil microorganism, enzyme activity of the mature spruce plantation were significantly lower than those of the young spruce plantation and secondary broad-leaved forest.
通过对川西亚高山针叶林人工重建过程中土壤微生物数量、酶活性及其与土壤养分性状的关系研究表明,云杉人工成熟林土壤微生物数量、酶活性明显低于云杉人工幼林地,也低于同龄的次生阔叶林地,人工云杉林随着林龄的增加土壤肥力严重退化。
3.
The results showed that soil silt, clay, physical clay, aggregate degree and structure coefficient in topsoil decreased with increasing of spruce plantation age and soil sand increased.
研究了川西亚高山针叶林人工重建过程中土壤物理性质,结果表明:随着人工云杉林龄的增加,土壤表层粉粒、粘粒、物理性粘粒、团聚度和结构系数降低,砂粒含量增高,土壤饱和持水量、毛管持水量及总孔隙和毛管孔隙在人工云杉林演替过程中表现出"U"型变化,即人工云杉从幼林向成熟林演替阶段,土壤饱和持水量、毛管持水量及总孔隙和毛管孔隙则减少,在40年生云杉林达最低值之后,随着云杉自疏而有上升的趋势,毛管持水量是决定林地土壤自然含水量的主要因子。
补充资料：人工受精与人工授精
人工受精与人工授精
artificial fertilization and artificial insemination
我国学者把“人工受精”与“人工授精”两名词区别开来：前者指人工体外受精而言，后者指把精液注入到妇女的阴道或宫颈管、宫腔内，使精、卵在体内相遇。人卵体外受精与胚胎移植后出生的婴儿俗称试管婴儿。
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