人为干扰

Betula, Quercus, Corylus, Alnus, Tsuga and a little amount of Pinus were ia little aggregation in the mountain slope near the marshland This is suggested to be caused by modern people's activity.

菊科。禾本科和莎草科等；在沼泽周围的山坡上，长有桦、栎，榛、桤木、铁杉等和极少量的松，冷杉仅以片状小群聚散居于附近的山坡上，这是近代人为活动干扰的结果。

Species richness and Pielou evenness index were used to measure species diversity. Species richness in polluted area was 32-67, while in control area it was 47-82. Pielou evenness index of tree layer was 0.1161-0.8509, while those of shrub layer and herb layer were 0.1763-0.3249 and 0.0443-0.2601, respectively. The results showed that both species richness and Pielou evenness index were influenced by the point source pollution. Species importance values showed significant differences between polluted area and control area. Dominance of different species had changed, and some species even disappeared under the pressure of pollution, indicating a process of species replacement in plant communities. Such species replacement can provide a scientific basis for species selection for restoration of human-damaged ecosystem. The natural regeneration of Quercus variabilis was insensitive to pollution, while Cupressus funebris was effected seriously.

仅在污染区中出现的物种数量远低于仅在对照区中出现的物种数量；(2)可分出4种基本的群落类型：马尾松林、柏木林、栓皮栎林和马尾松＋栓皮栎林，各群落特定层次的物种丰富度指数以及Pielou均匀度指数在污染区与对照区之间存在显著差异；(3)污染胁迫下，物种在群落中的生态优势度发生了变化，反映了群落中不同物种相互替代的过程，这种物种的替代可为今后受损生态系统人为恢复过程中物种的筛选提供一定的理论参考；(4)对群落中王要物种更新的调查发现：栓皮栎林对污染不敏感；柏木林污染区与对照区幼苗数量及分布格局均有明显差异，污染条件下群落未来演替受到严重干扰。

To gain further insight into the two floral homeotic genes LLAG1 and LLGLO1 we have constructed their RNAi vectors respectively.

RNAi技术就是人为的引入RNA干扰信号分子siRNA来沉默同源基因的表达。

For finite element analysis utilizing solid models, implementation problems of the Stress Categorisation Route, where the calculated stress should be identified as membrane, bending or peak, become apparent.

因此，建立操作性强、概念清晰、减少人为因素干扰的承压设备强度数值模拟方法，对消除承压设备数值模拟的不确定性，有效地对承压设备强度进行评定，具有重要意义。

In addition to learning to use the analysis software, the student teams also must learn to recognize man-made radio interference that contaminates the data.

除了学习使用分析软件，学生团队也必须学会承认人为的无线电干扰污染的数据。

While only first-order gradient feature (denoted by 1) and the feature used in SRNE (denoted by 12) yield results with obvious jagged staircase effect in the constant color region and NEVPM yields results with noisy edges and blur, the proposed improved feature combination with a (13al) preserves sharper edges and shapes and suppress blocky artifacts such as the edges of goblet and book.

仅当第一顺序梯度特征（表示1）和用于在连续色彩区域中其结果明显带有锯齿状阶梯形的SRNE的特征（表示12），以及用于结果带有边缘和污点干扰的NEVPM的特征，被提议的改进的特征组合a（13al）保留了较锋利的边缘和外形以及人为控制的块状，比如酒杯和书的边缘。

Many artificial air fresheners release nerve-deadening agents, which can interfere with your sense of smell.

许多人为空气fresheners释放神经隔阻剂，它可以干扰你的嗅觉。

The major factors that impact the species composition in communities were: xerophytes invasion, the intensity of human activities and the water resources status of the wetland.

决定湿地群落中植物组成的主要因素是：旱生植物入侵、人为活动的干扰强度和湿地的水资源状况。

This model is practical with simple structure and provides a new way to evaluate the safe behavior of seafarers.

该种评价模型简单、实用，而且克服了其他评价方法中存在的人为和随机干扰，同时也为航海人员的安全行为评价提供了一种新的研究思路。

The results suggest that to improve the natural regeneration,the integrated method ofcombining the biotic and abiotic factors should be adopted,and some artifical management,suchas formation of small gap,should be considered to improve the natural regeneration.

研究结果建议：对辽东栎林的天然更新，应该采取综合治理的方法，充分考虑各种生物和非生物因素的影响，处理好生物因素和非生物因素的关系；人为进行适当干扰，例如在森林中创建适当大小的林窗，以更好地促进辽东栎的天然更新。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失