查询词典 quercus

Taking the seedlings of Quercus glauca, a dominant evergreen broadleaf tree species in subtropical area, as test materials, this paper studied their photosynthesis, chlorophyll fluorescence, and chlorophyll content under effects of simulated acid rain with pH 25, 40, and 56. After 2-year acid rain stress, the net photosynthetic rate of Q.

选择亚热带常绿阔叶林优势树种青冈幼苗为研究对象，设置3个酸雨处理：pH 2.5、pH 4.0、pH 5.6，研究不同强度的模拟酸雨对青冈幼苗光合特性、叶绿素荧光参数和叶绿素含量的影响。

Based on the curve estimate of sap flow characteristic of Quercus acutissima using manifold curve model, the simulation curvilinear equation of environmental factors to sap flow were founded, but the availability of these equations differed each other.

基于对多种曲线模型对麻栎液流特征进行曲线估计，分别建立了各环境因子的模拟曲线方程，方程的有效性存在差异。

Here,man shan bian ye growing spruce, Picea edulis, Qinling fir, Chinese pine, larch's wave, pine, cypress Parker, Quercus, Birch, Poplar and other trees and peonies,wu jiao feng , herbaceous peony, wild lilac, boxwood, coquelicot, Ma orchids, azaleas and other shrubs more than 700 kinds of Section 50, the distribution of the Ciwujia, Cordyceps sinensis, Coptis, Banxia, Fritillaria, Asarum, rhubarb, etc. more than 100 kinds of medicinal plants, soft Lin Morchella inlaid on the floor, wild mushrooms and other edible fungi.

这里，漫山遍野生长着云杉、紫果云杉、秦岭冷杉、油松、波氏落叶松、华山松、桧柏、栎类、桦木、白杨等乔木和牡丹、五角枫、芍药、野丁香，黄杨、虞美人、马兰花、杜鹃等灌木50余科700多种，分布着刺五加、冬虫夏草、黄连、半夏、贝母、细辛、大黄等100多种药用植物，松软的林地上镶嵌着羊肚菌、野蘑菇等食用菌。

Here,man shan bian ye growing spruce, Picea edulis, Qinling fir, Chinese pine, larch's wave, pine, cypress Parker, Quercus, Birch, Poplar and other trees and peonies,wu jiao feng , peony, wild lilac, boxwood, coquelicot, Ma orchids, azaleas and other shrubs more than 700 kinds of Section 50, the distribution of the Ciwujia, Cordyceps sinensis, Coptis, Banxia, Fritillaria, Asarum, rhubarb, etc.

这里，漫山遍野生长着云杉、紫果云杉、秦岭冷杉、油松、波氏落叶松、华山松、桧柏、栎类、桦木、白杨等乔木和牡丹、五角枫、芍药、野丁香，黄杨、虞美人、马兰花、杜鹃等灌木50余科700多种，分布着刺五加、冬虫夏草、黄连、半夏、贝母、细辛、大黄等 100 多种药用植物，松软的林地上镶嵌着羊肚菌、野蘑菇等食用菌。

The experiments of drought and simulated defoliation were conducted to examine the ecological responses of seedlings in Quercus liaotungensis.

通过干旱处理和去叶试验研究了辽东栎幼苗的生态反应。

The taxonomy and distribution of several poisonous plants of Quercus Linn.

栎属有毒植物的分类分布及其对家畜的危害。

The morphological and anatomical features of Quercus Section Suber,the dominant species of the sclerophyllous evergreen broad leaved-forest,from different habitats were compared The results show that Quercus Section Suber possesses dual morphological characteristics of non-succulent xerophyte and al-pine plants.

对分布在不同生态环境条件下的硬叶常绿阔叶林建群种高山栎组植物叶的形态解剖特征进行了比较研究。

Vegetation zones and 10 vegetation types were classified using TWINSPAN and DCA: Bischofia javanica‐Machilus japonica var. kusanoi type on Ficus‐Machilus zone; Engelhardia roxburghiana‐Castanopsis cuspidata var. carlesii type on Machilus‐Castanopsis zone; Rhododendron formosanum type and Pasania kawakamii‐Machilus thunbergii type on Quercus lower zone; Chamaecyparis obtusa var. formosana—Rhododendron formosanum type, Fagus hayatae type, Symplocos arisanensis‐Illicium anisatum type on Quercus upper zone; Tsuga chinensis var. formosana and Pinus taiwanensis type on Tsuga‐Picea zone; Abies kawakamii type on Abies zone.

经TWINSPAN分析及参考DCA结果，可将植物社会区分为6个植群带10个植群型，分别为榕楠林带的茄冬‐大叶楠型；楠槠林带的黄杞‐长尾尖叶槠型；栎林带下层的台湾杜鹃型、大叶石栎‐猪脚楠型；栎林带上层的台湾扁柏‐台湾杜鹃型、台湾水青冈型及阿里山灰木‐白花八角型；铁杉‐云杉林带的台湾铁杉型、台湾二叶松型；冷杉林带的台湾冷杉型。

The main results are as follows:There is a significant difference among all provenances of Quercus mongolica, which indicates that it is important to carry out provenance selection for Quercus mongolica.

主要研究结果如下：参试蒙古栎种源各生长性状存在着显著性差异，这表明蒙古栎种源选择是十分必要的。

The results showed that Liquidamba formosana, Quercus acutissima, and Quercus fabri populations had the dominant positions in the forest community of Purple Mountain Area of Nanjing. During the growth process, the mortality of L. formosana, Q. acutissima, and Q. fabri were higher in low age. After entering into the middle-age stage, the upper space was occupied by oak and L. formosana population all died. The mortality of Q. acutissima and Q. fabri populations were increased with the increasing of diameter class. L. formosana population in the Purple Mountain Area of Nanjing belonged to be the typical growing population and Q. acutissima population was a decreasing population. Q. fabri population belonged to be the growing population on the whole, but the diameter class in middle parts was incomplete and the population was difficult to be renewed. Among the studied quadrate, only one dominant population showed an aggregated distribution and other dominant species showed the random distribution. Either, all the dominant species in all the quadrates presented random distribution.

结果表明，枫香种群、麻栎种群和白栎种群在南京紫金山地区森林群落中占有优势地位；枫香种群、麻栎种群和白栎种群在其生长过程中，在低龄时期，死亡率都较高，进入中龄期后，由于上层空间都被栎木占据，枫香种群全部死亡，而麻栎种群和白栎种群的死亡率则随着径级的增大而增大；南京紫金山地区枫香种群属于典型的增长型种群，麻栎种群属于衰退型种群，白栎种群总体上属于增长型群落，但中间径级不完整，种群更新较为困难；在所研究的每一个样方中，一般只有一个优势物种呈聚集分布，而其他优势物种呈随机分布，或样方中所有优势物种都呈随机分布。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐