说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 词典 -> 马尾松人工林
1)  Masson pine plantation
马尾松人工林
1.
Carbon dynamics of Masson pine plantation in different age classes (8 a, 14 a, 23 a, 38 a) in the central hilly area of Guangxi, China was studied based on the estimation of their biomass and net primary production (NPP).
 对广西中部丘陵区不同年龄阶段(8年生、14年生、23年生、38年生)的马尾松人工林生物量和净生产量进行了研究,探讨了该人工林生产与碳素动态。
2.
Based on the investigation of the geographical district and site type characteristics of Masson pine plantation in Yichang County, site quality evaluation system of Masson pine plantation was estalblished by means of Richards growth equation and quantitative theory Ⅰ.
本研究在对宜昌县马尾松人工林进行了大量外业调查后,采用Richards生长曲线模型与数量化理论Ⅰ模型,对宜昌县马尾松人工林立地质量进行了系统评价。
3.
Based on the stand growth table and the data of input and output of masson pine plantation in Hubei Province, the management model of masson pine plantation was compiled by using the discount cash flow method.
以湖北省马尾松人工林林分生长过程表为基础,根据营林投入产出资料,采用现金流量贴现法编制出马尾松人工经营模型,与人工林多形曲线指数表、立地得分表、林分生长过程表共同构成生长经营模型。
2)  Pinus Massoniana plantation
马尾松人工林
1.
A study was conducted of the soil physical properties of Pinus massoniana plantation under different intensities of fire disturbance.
研究了马尾松人工林在强度、中度、轻度和无火干扰情况下林地土壤的物理性质。
2.
We evaluated the impact of litterfall on soil respiration under a Pinus massoniana plantation in Tianjiling National Forest Park of Changsha,Hunan,using a field study with litterfall exclusion and addition in a full factorial design.
2007年1—12月,在长沙天际岭国家森林公园,研究马尾松人工林土壤呼吸速率对去除和添加凋落物处理的响应。
3)  Pinus massoniana plantations
马尾松人工林
1.
By using the data from dominant tree stem analysis and selecting the proper growth equation of Pinus massoniana plantations,this paper built up a polymorphic site index model for the plantations,which expresses their site index as an explicit expression of tree age and dominant height,and conducted an optimization solution to their model parameters by employing genetic algorithm.
利用马尾松人工林优势木树干解析材料,选择合适的生长方程构建了能把地位指数写成年龄和优势高显式表达式的多形地位指数曲线模型,并用遗传算法对其参数作优化求解。
4)  Pinus massoniana
马尾松人工林
1.
On the Establishment of Variable Density Yield Table for the Pinus massoniana Plantation in Fujian;
福建马尾松人工林可变密度收获表的编制
5)  artificial Pinus massoniana forest
人工马尾松林
6)  masson pine (Pinus massoniana) plantation
人工林马尾松
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