芦苇的

And further more, calculate the area of bulrush based on the changes of time-serials MODIS-NDVI. The numerical value is close to realistic value.

在此基础上，利用基于时序的芦苇植被指数变化，提取了洞庭湖芦苇的生长范围，最后与TM 和实测数据对比，结果比较一致。

The study reflects that using man-made reed marsh to decontaminate city sewage can effectively get rid of some pollutants in the polluted water,and the water after being decontaminated can reach the national standard of water discharging.

芦苇湿地处理污水是将污水有控制地投配到经常处于饱和状态的生长有芦苇的土地上，在芦苇与土壤及微生物的联合作用下得到净化的一种污水土地处理技术。

Man is but a reed, the feeblest thing in nature, but he is a reed that thinks

在自然界里，人尽管象芦苇一样弱小，但不同于芦苇的是，人是会思考的。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

By optimizing the culture conditions, the present work developed for the first time an efficient system for inducing embryogenic callus formation and plant regeneration through somatic embryogenesis from both dune reed, an ecotype with drought tolerance growing in desert region of northwestern China and local swamp reed .

本研究通过优化培养条件首次建立了沙丘芦苇（一种生活在中国西北沙漠地区的具抗旱性能的芦苇生态型）和当地的沼泽芦苇的体外培养体系。

Higher Ca distributed in bulliformcell than in mesophyll cell and bundle sheath cell of dune reed, higher Mg distributedin mesophyll cell and higher K, Na and Cl distributed in sheath cell HigherNa and Mg distributed in mesophyll than in bulliform cell and bundle sheathcell of light salt meadow reed, and higher K, Ca and Cl distributed in itsbundle sheath cell. Higher Na and Mg distributed in bulliform cell than in mesophyllcell and bundle sheath cell of heavy salt meadow reed, higher K, Ca and Cl distributedin its mesophyll cell. This paper discussed the distribution conditions of theabove five ions in leaf cell of the four reed ecotypes and the meaning ofphysiological adaptation to habitat in detail.

沙丘芦苇的泡状细胞内Ca分布较叶肉细胞和鞘细胞高，叶细胞内Mg分布较高，在鞘细胞内K，Na和Cl布较高；轻度盐化草甸芦苇叶肉细胞内分布了较多的Na和Mg，在鞘细胞内K，Ca和C1分布较叶肉细胞和泡状细胞高；而重度盐化草甸芦苇泡状细胞内分布了较多的Na和Mg，叶肉细胞分布了较多的K，Ca和Cl；详细讨论了以上五种离子在不同生态型芦苇叶片内不同细胞类型的分布状况与环境适应的意义。

Total submergence largely decreased biomass production and growth in length,with less effect on shoot numbers.Increased elongation of the growing internodes of up to 140% is caused by submergence.Nutrient such as N,P,K do significantly affect on growth.No mater lack of any element will decrease the biomass,the result same as the oligotrophic conditions.But lack of phosphorus is the worst mater.

而淹没式淹水可能使生物量降低，但是植株的高度有所增加，因为淹水可以使芦苇的节间高度提高140％；对根茎的数量没有很明显的影响。N、P、K等营养元素对芦苇生长也具有重要的作用，无论缺少哪一种对芦苇生长都不利，跟完全贫营养状态没有明显的区别，但是缺P时芦苇生长是最差的。

The Pn of Phragmites communis is higher than that of Phalaris arundinacea L, meanwhile Phragmites communis has the higher diurnal photosynthetic capacity, which shows that the Phragmites communis could grow more rapidly, and have higher biomass, so the Phragmites communis could be one of the priority implemental plant.

芦苇的Pn比虉草的Pn高，同时芦苇较虉草有更大的日光合量，说明芦苇相比较长势更快，生物量更高，当年栽植当年见效，在湿地生态系统人工修复中可作为优选工具植物之一。

The soil depth of 30～40 cm could be taken as a shift depth of the vertical distribution of Phragmites communis belowground biomass.

基于2005年4～9月盘锦湿地芦苇生态系统的观测资料，分析了盘锦湿地优势植物芦苇的群落学特性。

Based on Phragmites phenological data from 1987 to 1993 in Panjin wetland,the characteristics of the germination stage,leafing stage,flowering stage and fade stage of Phragmites were analyzed in this paper,The relationships between climatic factors and Phragmites phenologies were discussed.

基于1987~1993年盘锦湿地芦苇物候数据，分析了芦苇的萌动期、展叶期、开花期和枯黄期的物候特征，探讨了芦苇物候期与气候因子的关系，并利用2种积温模型模拟了芦苇的展叶期和开花期。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。