查询词典 selection forest

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持"新疆野苹果可能是栽培苹果祖先种"的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

Breeding technology is the base of seedling cultivating, seedling of Korean Spruce in certain shade could grow better than seedling of Korean Spruce in sunlight, seedling of Korean Spruce could grow bester in 25% soil containing water. Forest management was formed by standardized site selection, site preparation, planting, cultural work on young trees of seedlings cultivating technology.

育苗技术是苗木培育的基础，红皮云杉育苗在一定的遮光条件下生长好于全光条件下的生长土壤含水率25％最适苗木生长；营造技术将整套苗木培育技术从立地选择、整地栽植、幼林抚育系统规范化后面形成的；密度定量管理以密度效应为理论基础。

Habitat selection of goral was mainly influenced by distance to human disturbance, altitude, distance to forest edge, distance to water source, slope position, shrub canopy cover, shrub height, level of concealment, slope aspect and wind direction.

因子分析表明，影响矮岩羊生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、灌丛高度、隐蔽级、风级和动物干扰距离等生境因子，而影响斑羚生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、坡位、灌丛盖度、灌丛高度、隐蔽级、坡向和风向生境因子。

Because of this, it has become the most popular method for counting forest birds. In this paper, the assumptions, types, and limiting factors of using point count method in bird survey ere introduced, with the focus on the appropriate selection of sample size, sampling points and sampling time, and the durations of efforts.

本文在介绍样点法的假设条件、类型和影响鸟类调查准确性因素的基础上，重点介绍了样点法在调查森林鸟类需要考虑的样本大小、样点布设、调查时间、每点的停留时间和调查周期等。

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持&新疆野苹果可能是栽培苹果祖先种&的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

Sand'.'' protection and control, and research and apply optimized plantation of indeciduous forest and grass, and selection and breeding of indeciduous plant for ''.

治理'。''模式研究；常绿林草优化种植、防沙治沙抗旱常绿植物的选育及装备技术研究与应用

We shall emphatically study the layout and planning and control mode of ecological construction of sand protection and control, and research and apply optimized plantation of indeciduous forest and grass, and selection and breeding of indeciduous plant for sand protection and control and drought resistance and its facility and technology.

重点开展防沙治沙生态建设布局、规划和治理模式研究；常绿林草优化种植、防沙治沙抗旱常绿植物的选育及装备技术研究与应用

We shall emphatically study the layout and planning and control mode of ecological construction of sand protection and control, and research and apply optimized plantation of indeciduous forest and grass, and selection and breeding of indeciduous plant for sand protection and control and drought resistance and its facility and technology.

重点开展防沙治沙生态建设布局、规划和治理模式研究；常绿林草优化种植、防沙治沙抗旱常绿植物的选育及装备技术研究与应用；利马→干旱城。

A study was made of the foresttype diversity and stability of spruce and fir on Taohe Forest Range by utilizing the periodic variation data of selection cutting and forest management inventory data obtained over there.

利用洮河林区云、冷杉林择伐周期研究和森林资源二类清查样地资料，对该林区云、冷杉林分类型多样性和林分的稳定性进行了研究。

For AHI, it showed evergreen Platycladus orientalis forest was first selection when we recreate outside in coldest winter and hottest summer in Beijing, while the mixed forest should be considered more in spring.5. There were a close relationship among several factors related to ecological health in recreation forests.

AHI显示北京最冷的冬季和最热的夏季户外游憩时，应首先选择常绿的侧柏林，而春季应多考虑混交林。5、游憩林内与生态保健有关的几个因子相互间存在密切的关系。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。