高山徒步，行走阿尔卑斯     

秦昭 《地图》2009,(1):96-103

刺目的阳光下，群山在眼底一览见余，这里就是阿尔卑斯山脉的心脏地区。雪峰林立，沟壑纵横，一条条冰川冰雪巨蟒在海拔上驰骋；海拔两千米以下，可见到一片片绿色的高山牧场，蓝包的高山湖泊点缀在其中，想必那湖畔草地上一定是野花绚烂、牛羊成群；  相似文献   

Higher species diversity occurs in more fertile habitats without fertilizer disturbance in an alpine natural grassland community     

Dong Wang  Gao-Lin Wu  Xiao-Feng Chang  Zhi-Hua Shi  Lei Sun  Xue-Hong Wei 《山地科学学报》2014,11(3):755-761

Are there some relationships among species diversity and soil chemical properties of high altitude natural grasslands？ Plant community composition and chemical properties of soil samples were compared to investigate the relationship between soil and species diversity, and the richness in Tibetan alpine grasslands. Results showed that species diversity was significantly positively related to soil organic matter （SOM）, total nitrogen （TN）, available nitrogen （AN）, total phosphorus （TP）, available phosphorus （AP）, and available potassium （AK） in the high alpine grasslands. Margalefs species richness index was also significantly positively related to SOM, TN, AN, and TP. Most soil chemical properties showed significantly positive correlation with species diversity and Margalef＇s richness index. Our results suggested that higher plant species richness index and diversity occurred in more fertile soil habitats in high altitude natural grassland community. In practice, fertilization management for the restoration of degraded grassland should be conducted with reference to the nutrient levels ofnatural grassland without the additional artificial fertilizer and with higher species-diversity and richness index.  相似文献   

阿尔卑斯-喀尔巴阡上白垩统大洋红层特征与对比   总被引：2，自引：0，他引：2  

陈曦  王成善  李祥辉  胡修棉 《地学前缘》2005,12(2):61-68

在前人研究的基础上,从时代、岩性、古生物、沉积速率、沉积环境等方面对阿尔卑斯—喀尔巴阡地区的上白垩统大洋红层进行了详细对比,发现研究区内上白垩统大洋红层最早出露于Cenomanian期,最晚可延续至古近纪,且在Campanian期出露最为广泛,其岩性以灰岩、泥灰岩和含泥灰岩为主,生物化石以浮游有孔虫为主,沉积速率较低且在各地不尽相似,在CCD面上、下均可以出现,沉积环境一般是大陆边缘盆地、斜坡和大洋盆地等远洋、半远洋环境。通过比较分析,为进一步深入研究上白垩统大洋红层提供较为全面的基础资料。  相似文献   

Mantle processes during ocean formation：Petrologic records in peridotites from the Alpine－Apennine ophiolites     

GiovanniB.Piccardo 《《幕》》2003,26(3):193-199

Mantle peridotites were early exposed at the sea-floor of the Jurassic Tethys derived from the subcontinental mantle of the Europe-Adria system. During continental rifting and oceanic spreading, these lithospheric peri-dotites were percolated via diffuse reactive porous flowby melt fractions produced by near-fractional melting of the upwelling asthenosphere. Ascending melts inter-acted with the lower lithosphere, dissolving pyroxenes and precipitating olivine, and crystallized at shallower levels in the mantle column causing melt impregnation.Subsequent focused porous flow formed replacive dunitechannels, cutting the impregnated oeridotites, which were conduits for upward migration of MORB-type liq-uids. Melt migration produced depletionlrefertilization and significant heating of the percolatedlimpregnated mantle, i.e the thermochemical erosion of the litho-sphere. Impregnated and thermally modified lithos-pheric mantle was cooled by conductive heat loss dur-ing progressive lithosphere thinning and was intrudeaby MORB magmas, which formed Mg-rich and Fe-richgabbroic dykes and bodies. Alpine-Apennine ophiolitic peridotites record the deep-seated migration of melts which changed their compositions and dynamics during the rift evolution. The thermochemical erosion of the lithospheric mantle by the ascending asthenospheric melts, which induces significant compositional and rhe-ological changes in the lower lithosphere, is a major process in the evolution of the continent-ocean transi-tion towards a slow spreading oceanic system.  相似文献   

应用全球定位系统（GPS）监测阿尔卑斯东部最新地壳运动     

Mier.  JV 王建军 《地壳构造与地壳应力》1998,(3):1-9

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阿尔卑斯山区的危险区区划     

高甲荣 《山地学报》1998,(3)

通过介绍荒溪治理林业工程体系的基本原理,论述了阿尔卑斯山区危险区区划的重要性、产生背景、现状、原理和方法,并对其区划存在的问题和局限性进行了系统分析,以期为我国开展山地自然灾害防治工作提供借鉴资料．  相似文献   

阿尔卑斯山区费尔特林1987年的山崩     

Fork  H 赫英臣 《地震地质译丛》1991,13(5):58-61

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阿尔卑斯山地区第四纪冰川最新研究   总被引：2，自引：1，他引：1  

周尚哲 《冰川冻土》2012,34(5):1127-1133

阿尔卑斯山是冰川学和第四纪冰川学的诞生地. 第四纪冰川学在全球发展, 最初以Penck在阿尔卑斯山建立的模式为脚本. 此后, 阿尔卑斯山一直是欧洲第四纪山地冰川变化研究的核心地区. 笔者以为, 该区研究对中国第四纪冰川研究仍然具有参照意义, 故有必要简要但较为系统地介绍一下其研究概况与最新进展. 百年以来, 欧洲学者根据新发现的冰水砾石层, 将Penck的4次冰期模式发展为7次冰期. 即在贡兹(Günz)冰期之前增加了巴伯尔(Biber)冰期和多瑙(Donau)冰期, 在贡兹冰期和民德(Mindel)冰期之间增加了哈斯兰(Haslach)冰期, 并对其年代学进行了不少探索. 认为多瑙冰期可能在上新世和更新世之间, 但迄今, 这些较老的冰期年代仍存在很大不确定性. 里斯(Riss)冰期、 武木(Würm)冰期已获得较多的宇宙核素暴露年代. 特别是欧洲学者对许多谷地中保留的多道冰川堆积进行年代学研究, 获得大量的宇宙核素暴露年代数据, 揭示末次冰期最盛期以来, 冰川在总体退缩的大趋势下, 发生规模依次减小的冰进事件, 和北欧冰后期历次气候变化的其他记录相呼应.  相似文献   

TRANSALP Conference： a crustalsection through the Eastern Alps     

RinaldoNicolich 《《幕》》2003,26(4):318-319

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法国阿尔卑斯山(Mt.Alps, France) 溪流型喀斯特瀑布水生苔藓植物群落生态研究   总被引：2，自引：4，他引：2  

张朝晖  陈家宽  艾伦．培特客斯 《中国岩溶》2007,26(1):24-30

对法国阿尔卑斯山(Mt.Alps,France)6个溪流型喀斯特瀑布水生苔藓植物群落进行了研究。报道典型瀑布水生苔藓群落14个,苔藓植物种类由11科16属20种(含变种亚种)组成;生殖系统由雌雄异株(Dioecious,95%)和雌雄同株异苞(Autoecious,5%)两种类型构成,无性繁殖是繁殖的主要方式;区系地理成分含北温带分布(60%)、欧洲-北美分布(10%)、旧世界温带分布(5%)和世界广泛分布(25%)等4种成分;生活型含高丛集型(20%)、矮丛集型(10%)、交织型(60%)和平铺型(10%)4种类型。根据喀斯特沉积环境特征,划分瀑布水生苔藓群落为峡谷瀑布苔藓群落、温泉瀑布苔藓群落、瀑布水帘洞苔藓群落、悬崖瀑布苔藓群落和悬崖季节性瀑布苔藓群落等5种生态类型。法国阿尔卑斯山溪流型瀑布生物喀斯特沉积物具有分布广泛,但沉积规模较小的特点。  相似文献