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The percentage of total biomass allocated to roots was positively correlated with WUE for the seven investigated species (r=0.93, p.01). Results indicate that the species investigated are typical C3 plants. These spring ephemerals are characterized by higher P T and lower WUE in comparison with other desert species. The unique biomass allocation of low root/aboveground biomass ratio, higher leaf area ratio, higher leaf mass per unit leaf area, and photosynthetic traits are involved in the physiological mechanisms that contributed to the rapid growth of desert spring ephemerals.

这些结果表明，所观测的早春短命植物具有典型的C3植物特征，相比其它类型的荒漠植物具有较高的单位叶面积P高T及低WUE，并且在生长发育过程中表现出很低的根／地上生物量比、较高的叶面积比和单位叶面积干重，说明它们具有相对高的生长速率，这与其生长发育节律相一致，反映了它们与准噶尔荒漠环境相适应的特点。

The percentage of total biomass allocated to roots was positively correlated with WUE for the seven investigated species （ r = 0.93, p 〈 0.01）. Results indicate that the species investigated are typical C3 plants. These spring ephemerals are characterized by higher Pn, Tr and lower WUE in comparison with other desert species. The unique biomass allocation of low root/aboveground biomass ratio, higher leaf area ratio, higher leaf mass per unit leaf area, and photosynthetic traits are involved in the physiological mechanisms that contributed to the rapid growth of desert spring ephemerals.

这些结果表明，所观测的早春短命植物具有典型的G植物特征，相比其它类型的荒漠植物具有较高的单位叶面积Pn、高Tr及低WUE，并且在生长发育过程中表现出很低的根／地上生物量比、较高的叶面积比和单位叶面积干重，说明它们具有相对高的生长速率，这与其生长发育节律相一致，反映了它们与准噶尔荒漠环境相适应的特点。

Results on the effects of grazing by sheep on species and functional group diversities had not led to consensus in different communities: species richness, species diversity, diversities of life forms and water ecological type groups decreased with grazing intensity increased except in the Leymus chinensis + forbs community.

放牧对4种群落物种和功能群多样性的影响随不同的群落而表现不同：物种丰富度、物种多样性、生活型多样性和水分生态类型多样性除羊草杂类草群落外随放牧强度的加大而降低，但适度放牧增加了羊草杂类草群落的上述多样性指标。

The results showed:(1)Nitrogen addition changed the soil physical and chemical properties, enhancing the content of NO3—- N available resources in the soil, increasing the plants height and cover, reducing the vegetation light penetration. With increasing of N addition, both the species richness and the diversity decrease sharply (P 0.001).(2)N addition increased the aboveground biomass significantly (P 0.05). With increasing of N addition, the aboveground biomass increased first then decreased, and the grasses biomass increased while the forbs and legumes biomass decreased.(3)There was a significant linear positive relationship between species richness and vegetation light penetration (P 0.05), and also between aboveground biomass and soil NO3—- N content (P 0.05). The relationship between aboveground biomass and species richness was negative upon enhanced N supply.

结果表明：（1）氮素添加提高了土壤中NO3—- N等可利用资源的含量，增加了植物群落植被的盖度，减小了植被的透光率，随着施氮量的增加群落中物种丰富度显著降低（P 0.001）；（2）氮素添加显著改变了植物群落地上生产力（P 0.05），随着施氮量的增加地上生产力呈现先增加后降低的变化趋势，各功能群中禾草生物量显著增加，而杂草和豆科生物量随施氮量增加逐渐减少；（3）物种多样性与植被透光率呈线性正相关（P 0.05）；地上生产力与土壤NO3—- N含量呈线性正相关（P 0.05）；随着施氮量的增加物种丰富度与生产力之间呈负相关关系。

Additionally, species with larger plasticity in biomass allocation and relative growth rate also showed higher seedling survival rate.7 All these suggested that higher light availability in grazed disturbed meadow community favor seedling recruitment for these familiar forbs component species, but bottom shade in fertilized meadow community restrain seedling recruitment for these species.

在变化的微生境下，具有较小生长可塑性的物种具有相对较大的幼苗存活率；而生物量、株高可塑性和平均可塑性较高的物种具有相对较大的幼苗越冬存活率；具有较大的生物量分配和相对生长率可塑性的物种幼苗具有相对较大的存活率。7放牧干扰下的高光照微生境有利于这些草甸常见组分种实生幼苗的更新补充，而施肥后草甸群落冠层底部的低光生境不利于这些物种的更新补充。

Under the suitable condition, it could form a community of mono-dominant species and double-species with the dominant species P.

在适宜的条件下，可形成以芦苇为优势种的单优群落或双优群落。

In order to control pests and maintain an excellent ecological environment, the occurrence and management of pests were studied in this paper by searching the infromation in the office of Baiyunshan Scenic Spot, on the NCBI and Internet. The results were as follows: There were 129 species of insects from 12 orders, 67 families and 114 genuses in Baiyunshan Scenic Spot, and 28 species of forestry pests and 33 species of natural enemy were includied.

为了有效控制害虫为害，保障白云山风景区的优良生态环境，本研究查阅了白云山风景区内部以及NCBI和互联网上的资料，结合白云山风景区园林害虫发生和危害的具体情况，制定了综合防治策略，主要结果如下：白云山风景区昆虫总共有12 目67 科114 属129种，其中，有林木害虫28 种，天敌昆虫33 种。

This two species of Gloiopeltis could mature and release spores at illuminance 2 500~8 500 lx. For no nutrient addition to the stocking water the two species of Gloiopeltis could mature and release spores, while nutrient addition too high (80 mg·L-1 NaNO3 and 8 mg·L-1 KH2PO4) it was not good for the mature and spores release of this two species alga.

结果表明，在水温10~20℃培养条件下，海萝能成熟放散孢子；在水温12~24℃时，鹿角海萝能成熟放散孢子；在光照2 500~8 500 lx的范围内，2种海萝均能成熟放散孢子；培养海水中不添加营养盐对这2种海萝的成熟没有影响，培养液的浓度高达硝酸钠80 mg·L-1、磷酸二氢钾8 mg·L-1时反而不利于藻体的成熟及孢子放散附着。

Habitat loss takes several form-:S: outright loss of areas used by wild species; degradation, for example, from vegetation removal and erosion, which deprive native species of food, shelter, and breeding areas; and fragmentation, when native species are squeezed onto small patches of undisturbed land surrounded by areas cleared for agriculture and other purposes.

栖地的消失有几种型式：如，野生物种栖地的澈底消失；植被移除或腐蚀导致土质恶化，影响原生物种的食物、栖地、养育地；或因为农业或其他用地的使用，使原生物种被迫迁移至未受干扰但被其他用途所围绕的小块土地时，其活动区域遭到分割。下一个： hail。。。是什麼意思啊？

The results showed that there were 20 species of human parasites prevalent in situ, involving seven species of intestinal protozoa with an infection rate of 7.8%: and eleven species of intestinal helminths, the infection rate being 67.4 %; while the overall infection rate of intestinal parasites was 48.8%.

共检出寄生虫19种。其中蛔虫、钩虫、鞭虫、蛲虫、姜片虫、华支睾吸虫、并殖吸虫、棘口科吸虫、东方毛圆线虫、带绦虫、微小膜壳绦虫、溶组织内阿米巴、结肠内阿米巴、贾第虫、布氏嗜碘阿米巴、微小内蜒阿米巴、人毛滴虫、阴道毛滴虫和人蠕形螨的感染率依次为27％、2％、20.3％、7.1％、1.7％、0.3％、0.1％、0.2％、0.06％、0.2％、0.03％、0.2％、2.3％、0.2％、0.02％、0.2％、0.04％、7.3％和22.8％。

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。