外来植物

Phenotypic plasticity and genetic differentiation are the two major strategies that alien invasive plants can adapt habitat heterogeneity.The polymorphism of invasive plants and the diversity of their dispersal way enable them occupying invaded habitat quickly,and dispersing with a far range.The breeding strategies that agamogenesis and amphigenesis can coexist and trade off according to the habitat and invasive stage can not only promote the invasive population erupted massively,but also directly affect the dispersal mechanism and regulate the genetic structure of the population.

表型可塑性和遗传分化是外来入侵植物对生境异质性的两种适应策略；散布体多态型和散布途径多种化，使外来入侵植物迅速占领入侵生境，并进行远距离扩散；无性生殖和有性生殖并存，并根据生境和入侵阶段权衡的繁育对策不仅使入侵种群大面积暴发成为可能，而且直接影响散布机制并对种群遗传结构具有调节作用。

There are 34 species of exotic invasive plants, 17 families and 29 genera are identified in Henan province. There are one species of hydrophyte and 33 species of terricolous among them.

河南的外来入侵植物有34种，隶属17科29属，其中水生植物1种，陆生植物33种。

The characteristics of nitrogen metabolism and soil nitrogen of four invasive plants (Ipomoea cairica, Wedelia trilobata, Synedrella nodiflora, Lantana camara) and one native plant (Paederia scandens, control plant) had been studied.

研究了4种外来入侵植物(五爪金龙、南美蟛蜞菊、金腰箭和马缨丹)和1种本地植物鸡矢藤的氮代谢及其土壤氮特征。

Hong Kong is near the northern limit of the distribution of tropical Asian flora and has an estimated 2800 species of vascular plants, both native and introduced.

香港位于亚洲热带植物分布区的北面边缘，本土和外来的维管系植物，估计约有2800种。

During the summer months, this group monitors the growth of lupine plants and removes invasive plant species from this park.

这个小组在这几个夏日的月份里，观测侵入至此地的植物的成长，并且拔除这个公园里的外来种植物。

Some native shade-tolerant or hygrophilous plants had disappeared, while some xerophilous, disturbance-resistant species, as well as some exotic and synanthropic species, had expanded their populations.

结果表明：(1)旅游干扰显著改变了林下植物物种组成：耐荫喜湿的乡土植物局部消失，而喜旱耐扰动的植物种群扩大，外来和伴人植物种群侵入。

Of them, nineteen alien invasive species belonging to Asteraceae, eight to Poaceae, and seven to Fabaceae and Amaranthaceae respectively, and they take up 56.2% of the total number of the invasive plants in Guangzhou.

结果表明：广州市现有外来入侵植物73种，隶属于27科59属，其中菊科(19种)、禾本科(8种)、豆科(7种)和苋科(7种)植物占了入侵植物总种数的56.2%。

This paper discusses and identifies the concepts of alien species and alien invasive species;reports 53 species of alien species of plants in Henan Province,including Chenopodium pumilio R.

B r。为中国新记录归化种；分析了河南外来入侵植物的种类构成、来源地、适应性及传播途径；对预防和控制外来入侵植物提出了几点建议

Based on a survey on exotic invasive plants of Shenzhen's green space ,this paper confirms that Mikania micrantha and lpomoea cairica are the most harmful exotic plants in the city.

通过对深圳市具有代表性的公共园林绿地中的外来入侵植物的调查，确定薇甘菊和五爪金龙为深圳市为害最为严重的外来入侵植物。

Species of invasive plant s belonging to 50 genuses, 24 families are dientified in Changbai Mountains through three years of investigation and referring to the related literatures.

经过三年的调查和查阅参考文献，确定长白山区外来的入侵植物共有 2 4科、5 0属、5 6种；来源于世界各地的入侵植物有 1 6科、36属、4 2种，其中 3种为有害检疫杂草；来源于国内其它地区的有 1 3科、1 4属、1 4种。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。