查询词典 protective forest

For the leaf area index of the three forest types, there was a similar variation trend, i.e ., increased first and decreased then, with the maximum presented in mid-July or August for Q. mongolica and J.mandshurica forests while in mid-August or September for F. rhynchophulla forest. The canopy porosity of the three forest types also had a similar variation trend, but opposite to leaf area index, being decreased first and increased then, with the minimum presented in mid-June, July, August or September. The analysis of variation coefficients of leaf area index, transmitted direct gap light, and transmitted diffuse gap light indicated that the spatial pattern of leaf area index in July-September was the main factor affecting the spatial distribution of transmitted diffuse gap light.

结果表明，3种林型的叶面积指数变化总体趋势是一致的，均呈先上升再下降的单峰曲线，蒙古栎林和胡桃楸林都是在7月中旬或8月中旬达到最大峰值，花曲柳林是在8月中旬或9月中旬达到最大峰值；3种林型冠层孔隙度的变化总体趋势也是一致的，呈先下降再上升的单峰曲线，不同样地峰值出现的时间也不同，最低峰值在6、7、8、9月中旬均有出现；通过对不同月份的叶面积指数、林下散射光、林下直射光的变异系数分析表明，7—9月叶面积指数的空间格局是影响林下散射光空间分布的主要因素。

The rusults indicated that the temperature in forest was lower and the growth of ginseng was slower than out of forest, the yields were also lower; with the increase of ginseng age, the rate of net photosynthesis became higher; when the canopy density of forest reached to about 0.7～0.8, the net photosynthesis, hight, root weight, transpiration,chlorophyll conten of ginseng were higher than others, indicating that both lower and higher canopy density would reduce the rate of net photosynthesis of ginseng, and that the canpoy density of stand could be adjusted to satisfy the temperature and lighting for ginseng, and to provide the optimum ecology enviorment for the growth of ginseng.

结果表明，在生长季节内，林内温度低于林外温度，林下人参生长发育较差，产量较低；林分郁闭度为0.7~0.8时，人参的净光合速率、株高、单根重、叶绿素含量等指标较高；而郁闭度过高或过低都会影响人参生长发育；随着人参年龄的增加，净光合速率有逐渐升高的趋势。通过人为调节林分郁闭度的方式来满足人参对温度和光照因子的需求，为林下人参生长发育提供最适宜的生态环境。

G,and applied on the class hiberarchy of forest resource about forest covered land and broadleaved forest covered land.

中实现描述逻辑推理的方法，通过森林资源中的有林地和阔叶林地类的层次结构描述逻辑推理应用。

The main study site is in Wuying forest area of Northeast China. Based on the analysis of structure features and dynamic changes of the Broadleaved Korean pine forests and its secondary forest types, this paper studied the restoration ways for the degraded forest ecosystem and sustainable management.

该文以黑龙江五营林区为主要对象，通过对阔叶红松林及其次生类型结构特征和动态变化的分析，研究退化生态系统的恢复途径和可持续经营措施。

Meanwhile,other measures such as forest ecological benefit compensation,forest park and nature reserve development have been adopted to protect natural forest with special values or roles.

此外，通过开展森林生态效益补偿、建立森林公园和自然保护区等措施，保护具有特定意义和作用的天然林。

The development of the regional forestry industry was uneven.(2)The geographical distribution of China's forest industry and Forest resources was uneven during 1998-2007.The degree of the uneven geographical distribution of the primary industry of China's forestry industry and forest resources was de

我国林业第一产业与森林资源在地理分布上的不均衡程度逐年降低；而我国林业产业总产值、第二产业与第三产业与森林资源在地理分布上的不均衡程度则先在1998-2003年间逐年升高，然后再缓慢下降；(3)1998-2007年间，全国只有浙江、福建、西藏、吉林、黑龙江的林业产业结构对其林业产业增长的贡献始终高于全国平均水平，其他省份的林业产业结构还需调整。

We spent one weekend to travel to Epping Forest , which is famous for Henry VIII's hunting house during 16 century. It is a natural, big forest and it is actually my first time to see the real wild forest.

周末和约翰一起去epping森林，它是一个野生自然的森林，据说照片上的这个房子就是6世纪亨利八世纪在伦敦的猎物小房子。

NiAl-Al2O3-TiC acted as transferring stress and supporting for protective layer. With increase of test temperature, decrease in strength and hardness of NiAl-Al2O3-TiC led to abscission and cracking of protective layer.

NiAl-Al2O3-TiC对保护层起到传递应力和支撑作用，随着试验温度的升高，NiAl-Al2O3-TiC强度和硬度的降低导致保护层的开裂和脱落。

With unique silicone protective film, it can clean glass, protect glass surface layer from acid mist and steam, meantime, prevent drip because of temperature difference, indeed make glass free of spot. The effect shall be better for auto glass, it can availably clean dirt, while taking effect as "lubricating protective film" to reduce friction between rain blows and glass, so protect their service life, leave your visual field brighter.

本品独特的硅酮保护成膜，不但能将玻璃洗干净，更起到保护玻璃表层，不会受到酸雾水气的腐蚀，更能起到防止因温差而出现雾珠，真正使玻璃"无彩无瑕"，如汽车玻璃用效果更佳，不但能有效地清洗玻璃上的尘埃污垢，更能起到以"润滑保护膜"的作用减轻雨刮与玻璃的摩擦力，从而保护两者的使用寿命，使您的视野更明亮。

A polarizing plate is provided and includes a polarizing film and two transparent protective film, at least one of the two transparent protective films being an optical compensation sheet, the optical compensation sheet being a cellulose acylate film having a thickness of from 40 m to 180 m.

本发明提供了一种偏振片，其包括偏振薄膜和两个透明保护薄膜，该两个透明保护薄膜中的至少一个是光学补偿片，该光学补偿片是厚度为40～180μm的纤维素酰化物薄膜。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。