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By collecting ,testing, comparing, and analyzing the soil samples, soil recovery under the various recovery conditions along Mian CountyNingqiang highway was studied. The results were as follows herbaceous recovery to the soil fertility recovery in the prior was greater than the combination of grass and irrigation or than the pure bushes recovery. In each of them, the content of organic matter were 13.84, 7.50, 6.00 g·kg-1; In the recovery of herbaceous ecology, to grow leguminous plant and granminaceous plant together was better than pure graninaceous plant or pure leguminous plant. In each of them, the content of organic matter was 29.67, 17.51, 9.37 g·kg-1; to sow ryegrass and alfalfa together with some local grass seeds or to grow coxcomb, alfalfa and local couch grass together could bring better effects than to plant the alfalfa only. In each of them the increased organic matter contents were 4.93,17.51 and 9.37 g·kg-1;the quotas of the organic matter and alkaline hydrolysis nitrogen in soil fetility factor were closely connected, mainly because of the difference between the generation quantity and resolution quantity of the organic matter in the soil surface.

采集土壤样品,经室内分析化验,用对比分析的方法对勉县至宁强高速公路生态恢复中不同恢复类型条件下的土壤恢复进行了研究,结果表明草本恢复类型对前期土壤肥力的恢复作用大于草灌结合,并大于单纯灌木恢复类型,其中有机质含量分别为13.84、7.50和6.00 g·kg-1;在草本生态恢复类型中,豆科植物与禾本科植物混播恢复类型大于禾本科植物恢复类型的作用,并大于单纯豆科植物恢复类型的作用,其中有机质含量分别为29.67、17.51和9.37 g·kg-1;黑麦草与苜蓿混播并有当地草种入侵以及小冠花与苜蓿混播并播入当地草种羊茅,明显优于纯苜蓿单播,其中有机质含量分别增加了4.93和3.32 g·kg-1;土壤肥力因子中有机质与碱解氮两个指标有较好的相关性,主要与土壤表层有机质的生成量和分解量之差有关。

Small genus of tropical American trees and shrubs with pinnate leaves and flat straight pods.

长有羽状叶子和小的不显眼的白花和小的扁平豆的小直立的或攀缘的草本属;小扁豆。

Genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils.

长有羽状叶子和小的不显眼的白花和小的扁平豆的小直立的或攀缘的草本属;小扁豆。

Herbs small, with annual pseudostems from erect, reduced rhizome; roots fascicled, tuberous, fusiform.

小草本,一年生假茎从直立,退化根状茎发出;根簇生,块茎状,纺锤形。

Except for Phragmites australis community,other communities were mainly the dwarf shrubs,semi-bush. Analyse from the number of plants,Ephedraprzewalskii community,Potaninia mongolica maxim community,Kalidium foliatum community and Leguminose community,all were more than 90 percent;Among Reaumuria community,Caragana community and Zygophyllum xanthoxylum community,Nitraria community,the shrub layer was not dominance in the quantity,but herb layer was most of the smaller annual herb.

群落中除芦苇群落以外,其它各群落以矮化的灌木、半灌木为主;从植株数量上分析,膜果麻黄群落、绵刺群落、盐爪爪群落和猫头刺群落的灌木、半灌木均在90%以上;而红砂群落、柠条群落和木霸王群落虽然灌木层在数量上不占主导优势,但草本层大多数是较小的一年生草本。

Lavandula spica perennial herb or small short bush, although is called the grass, is actually one kind of indigo blue floret.

熏衣草多年生草本或小矮灌木,虽称为草,实际是一种紫蓝色小花。

The lavandula spica is one kind of strongly fragrant indigo blue floret.

熏衣草多年生草本或小矮灌木,虽称为草,实际是一种紫蓝色小花。

The 32 genera of pollen-allergenic plants in Beijing urban area were mainly North Temperate elements, occupying 40.6%, followed by Cosmopolitan and Pantropic elements.

北京城区各功能区中花粉强致敏草本的盖度,从大到小的顺序是城市废弃地>体育中心及机关单位>道路绿地>公园>居民区>学校>广场;4北京城区木本花粉致敏植物的花期主要集中在3-4月,草本在7-9月。

Small perennial herb of cooler regions of North America with racemose purple flowers.

北美较冷地区的一种多年生小草本,具有齿的、近圆形的叶和紫色花的总状花序。

Herbs annual, subshrubs, or shrubs, rarely perennial herbs or small trees.

一年生草本,半灌木或者灌木,很少多年生草本或小乔木。

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