查询词典 shrub steppe

The reasons of water cycle being destroied are as follows: Because of the forest-steppe vegetation destroied and water and soil erosion, water resource conservation layer is destructed, and surface water and groundwater of mountainous areas is also damaged. Groundwater is damaged as a result of poor drainage of mining industry. The river channelization destroies surface water and wetland groundwater. The plain groundwater is damaged because of excessive exploitation. The decreasing of actual evaporization destructs precipitaion cycle.

发现了自然水循环各环节被破坏的原因：森林草原植被破坏和水土流失，破坏了水源涵养层，破坏了山区地表水和地下水；矿业不良排水破坏了山区地下水；河流渠道化破坏了地表水和湿地地下水；过量开采破坏了平原地下水；陆地实际蒸发量的减少，破坏了大气降水循环。

This paper focuses on factors influencing temporal trends in soil respiration with measuring CO2 effluxes in desert steppe of Qilian Mountains,Northwest of China.

它不仅是全球碳循环的重要环节，而且也是大气中CO2的主要来源，由于其强烈的温室效应倍受人们关注〔2〕。

Effluxes in desert steppe during the dry season were negligible,while effluxes during the rainy season were about 1.94-9.32 μmol·m-2·s-1,the maximum of average soil CO2 efflux occurred in July and August,and the second was in May and September.

土壤湿度是重要的环境因子之一，在全球变化的背景下，研究其对土壤CO2通量的影响，能为探索陆地生态系统在碳循

The GaDaMeiLin poem》, written by the female composer Xinhuguang of Our country ,with the melody of Mongolia folk song《GaDaMeiLin》for fodder, with the folk hero——GaDaMeiLin's stories for clues, take the west and chinese compose technique as means, displaying heareres the past stories on Mongolia race in steppe, make single voice of the folk song return to folks again afreshing by several forms of department, and drive more public accept, this matter is worthy of concerning and thinking.

我国女作曲家辛沪光先生的作品——《嘎达梅林交响诗》，以蒙古族民歌《嘎达梅林》的曲调为素材，以草原英雄——嘎达梅林的故事为线索，以中西方的作曲技术为手段，给听者充分展示了一曲草原上的蒙古族往事，使单声部的民间歌曲以多声部的形式重新又回到民间，并被更多的大众接受，这件事本身就值得关注和思考。

Four typical grassland communities, Stipa klemenzii, Stipa grandis, Leymus chinensis and Leymus chinensis + forbs, had been chosen along precipitation gradients from 200, 290, 350 to 450 mm respectively in Inner Mongolia Steppe. The objectives of this study were to determine the effects of grazing on plant community composition, aboveground and belowground biomass, species and functional group diversities and the relationship between diversity and productivity, the effects of grazing on soil seed bank species composition, seed density and diversity along the transect.

选取内蒙古草原三种主要草原类型(草甸草原、典型草原和荒漠草原)代表性群落羊草杂类草群落、羊草群落和大针茅群落、小针茅群落，应用样线法沿水分梯度研究放牧对内蒙古草原不同植物群落功能群组成、多样性、生产力以及多样性与生产力关系的影响和放牧对土壤种子库组成、大小以及多样性的影响，在此基础上，研究土壤种子库与地上植被间的关系。

In wetter habitats, forbs were more abundant and accounted for the majority of aboveground biomass, whereas grasses became more important in dryer habitats. Shrubs and sub-shrubs increased with decreasing soil water availability and their relative biomass rapidly increased in degraded steppe and sand dune; perennial grasses had significantly higherδ〓C values than other PFGs; the δ〓C values of perennial grasses and forbs increased with decreasing soil water availability, while those of shrubs/sub-shrubs showed an inverse trend.

在较湿润生境，多年生杂类草更加丰富并构成了群落地上生物量的绝大部分；而在较干旱生境下，多年生禾草在群落中起更重要的作用；随着土壤含水量下降，灌木和半灌木逐渐增多，且在退化草地和沙地中其相对生物量迅速增加；多年生禾草δ〓C值显著高于其它功能群；随着土壤水分可利用性降低，多年生禾草和杂类草的δ〓C值表现出增加的趋势，而灌木/半灌木则表现出相反的趋势。

Main contents of the course includes: related conceptions, matter of soil, soil texture, soil organic matter, soil humus, soil structure, soil moisture, soil air, soil acidity and soil alkalinity, soil colloid, cation exchange, soil former soil-forming process, soil classification, distributions and properties of soil great group in China (fores soil, steppe soil, main non-zonal soil, paddy soil, etc), soil erosion, soil contamination, soil utilization, conservation of soil resource, soil investigation, etc.

土壤地理学是地理科学专业的主要基础课程之一，是一门必修课程；要求掌握土壤地理学基本的理论、知识和方法；主要内容有：有关概念、土壤组成物质、土壤质地、土壤有机质、土壤腐殖质、土壤结构、土壤水分、土壤空气、土壤酸碱性、土壤胶体、土壤阳离子交换、土壤形成因素、土壤形成过程、土壤分类、中国主要土壤类型（森林土壤、草原土壤、主要的非地带性土壤、水稻土等）的分布及其性质、土壤侵蚀、土壤污染、土壤资源的利用与保护、土壤调查研究等。

In order to meet the needs of different audiences, upon further digging, sorting compilation create a group, such as "the Qing Dynasty palace Gagaku","Qing feast","The Mongolian steppe style" and the "Manchu style" and other characteristics of programs.

为了满足不同观众的需求，经进一步挖掘，整理编创出一批如《清代宫廷雅乐》、《清宫宴乐》、《蒙古草原风情》和《满族风情》等的特色节目。

He could not, just as a man who has been staring in a fog at a blade of tall steppe grass and taking it for a tree cannot see a tree in it again, after he has once recognised it as a blade of grass.

就像某人从前在雾霭中观看野蒿中的一株草，把它看作是一棵树，当他看清这株草以后，再也不能把它看作一棵树了。

In this paper, four different representative grassland types in Eastern Qilian Mountains were selected to be experimental samples. They were Polygonum meadow, Grass steppe, Swamp meadow and Kobresia meadow.

本文选取东祁连山四种具有代表性的高寒草地植被类型作为试验样地，即珠芽蓼草地，禾草草地，沼泽草地，嵩草草地。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

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