查询词典 low forest

Hystrix canopy declined slightly at the midday, suggesting the occurrence of reversible photoinhibition. Owing to the lower maximum net photosynthetic rate in sun leaves and the ability to effectively and consistently utilize the scattered light and/or transmitted light, C. hystrix saplings could survive low light intensity, grow well at the edge of the forest and in the understorey, and eventually become one of the dominant species in upper layer of the community.

刺栲冠层阳生叶的最大光合能力比较低，整个冠层叶能高效而稳定地利用散射和透射光，这些特征使得常绿的刺栲幼树能在林边或林下良好生长，较好地适应不同的光环境并成功渡过幼苗期，最终成为群落中的上层优势种。

The results showed that there were significant differences among parameters of texture feature of the different land utilization. In the desertification, the mean and variance were comparatively high. The gray level was asymmetry, the contrasts between neighboring pixels were significant; while in water and irrigable land, the mean, variance was a little bit low, the grey level was symmetry; the mean, variance and gray level in the forest and dry land was between the above (desertification and water and irrigable land).

不同土地利用类型之间纹理特征参数差异明显，荒漠化土地的均值、方差值较高，灰度分布不均匀，相邻像元反差明显，内部变化剧烈；水体和灌溉耕地的均值、方差值很低，灰度值均匀，内部变化小；林地和旱耕地信息介于上述两类土地之间。

While it is contrary that the more contents of Fe,Ca and P are in yellow soil at higher altitude than those in lateritic red soil;(4) The pine forest has the highest content of Pb,and the Pb content is higher in soil at low altitude than that in high altitude.

鼎湖山土壤二氧化硅，锰含量随着海拔梯度的上升而下降，赤红壤含量高于黄壤；然而铁含量则随着海拔梯度的上升呈上升趋势，赤红壤含量低于黄壤，钙全量含量和磷含量也是赤红壤低于黄壤。（4）土壤Pb马尾松林含量最高，随着海拔梯度上升含量有下降趋势。

Especially in China, misdistribution, unreasonable structure, low occupancy per capita, so forest resource seems more important.

尤其对于像我国这样一个森林资源分布不均、结构不合理、人均相对贫乏的发展中国家，更显得十分重要。

Result shows that the weathering rates were very low (usually lower than 1.0 keq × ha-1× a-1) for allite (including red earth, lateritic red earth, red earth, yellow earth, and yellow-brown earth) in south China and silalsol (consisting of dark brown forest soil, black soil, and podzolic soil) in northeast China, but very high for xerosol and alpine soil in northwest China.

总的说来，中国南方富铝土区域（包括砖红壤带、赤红壤带、红壤黄壤带和黄棕壤带）以及东北的硅铝土区域（包括暗棕壤黑土带和漂灰土带）的土壤风化速率较低（通常低于1.0 keq × ha-1× a-1），而西北地区干旱土和高山土的风化速率则较高。

Some referential conclusions were drawn that the subsystems of forest resources and environment lie in weak sustainable development state expect the economy subsystem stands in a below-medium sustainable development, and the coordination development degree of the three subsystems is obviously low. So the countermeasures were proposed for Jiangsu province.

本文应用基于模糊一致矩阵的层次分析法得出了如下结论：江苏省FEES处于弱可持续发展状态，除了经济子系统处于中等偏弱的持续发展状态外，森林资源子系统、环境子系统也处于弱持续发展水平，三个子系统之间的协调发展度也明显不足。

By SWOT method, the paper analyses Chi Zhou's conditions of developing feature agriculture from its advantages and disadvantages and chances and challenges. With agricultural regional layout, Chizhou's feature agriculture areas fall into following categories: the one with mass characteristic in diked bases in the west north along Changjiang River, the one with interactive characteristics in middle mountainous part, and the one with agricultural and forest integration characteristics in low mountains in the southeast, among which emphasis should be put to develop fine rice and cotton and tea and sericulture and medicinal materials and bee-related product and distinctive seafood and livestock product.

为了充分发挥池州市发展特色农业的优势和潜力，促进池州市特色农业的快速发展，该文通过SWOT分析方法从优势、劣势、机遇、挑战等方面深入分析了池州市特色农业的发展条件，结合农业区域划分的成果将池州市特色农业的区域布局分为西北沿江洲圩基地规模型特色农业区、中部丘陵产业互动型特色农业区和东南部中低山农林复合型特色农业区三个区，其中优质米、优质棉、茶叶、蚕桑、中药材、蜂产品、特色水产品和畜产品等的生产是各区的发展重点。

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。

Four nitrogen addition treatments i.e, null nitrogen level, low nitrogen level (LN, 50 kg N hm-2 a-1), moderate nitrogen level (MN,100 kg N hm-2 a-1) and high nitrogen level (HN, 150 kg N hm-2 a-1), were established in the forest. All nitrogen treatments were carried out in triplicates.

通过原位进行低氮(LN， 50 kg N· hm-2· a-1)、中氮(MN， 100 kg N· hm-2· a-1)和高氮(HN， 150 kg N· hm-2· a-1)处理，研究了川南天然常绿阔叶林土壤酶活性特征及其对模拟N沉降的响应。

In winter Blood Pheasant tended to living both in the shrubs with low cover under 2m and in bamboo forest.

冬季倾向于选择灌木林中2m以下郁闭度较低的半坡活动，竹林为其次适栖息环境；夏季喜选择山脊附近下层空间较为开阔的灌木林或林间空地。

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