CAJ | 학술논문

集成了青藏高原气候区149个山地植被垂直带数据,利用国家基本气象台站自建站以来到2001年的地面观测日气象数据,计算了地面的温暖(WI)、寒冷(CI)、湿润(MI)、吉良龙夫(Kira)干湿指数、干燥度(Idm)等水热指数,运用GIS的空间分析模块,模拟了青藏高原水热条件的空间分布形势,探讨山地植被垂直带谱分布规律与制约因子的定量指标.结果表明:在高原的东北部、西北边缘,以荒漠、荒漠草原、山地森林、山地草原、灌丛、草甸为组合的半干旱、干旱结构向高原腹地以高寒草原、高山草甸、荒漠带组合的高寒干旱带谱结构的变化;东南、南部边缘,以温暖湿润为特征的以森林带为优势带谱组合结构逐渐向寒冷的高原中心变化;高原的地势效应,致使的水热形势旱现从中央向边缘变化的趋势是致使青藏高原植被垂直带谱分布的重要原因.
집성료청장고원기후구149개산지식피수직대수거,이용국가기본기상태참자건참이래도2001년적지면관측일기상수거,계산료지면적온난(WI)、한랭(CI)、습윤(MI)、길량룡부(Kira)간습지수、간조도(Idm)등수열지수,운용GIS적공간분석모괴,모의료청장고원수열조건적공간분포형세,탐토산지식피수직대보분포규률여제약인자적정량지표.결과표명:재고원적동북부、서북변연,이황막、황막초원、산지삼림、산지초원、관총、초전위조합적반간한、간한결구향고원복지이고한초원、고산초전、황막대조합적고한간한대보결구적변화;동남、남부변연,이온난습윤위특정적이삼림대위우세대보조합결구축점향한랭적고원중심변화;고원적지세효응,치사적수열형세한현종중앙향변연변화적추세시치사청장고원식피수직대보분포적중요원인.
A total of 149 altitudinal belt spectra of mountain vegetation were digitally integrated. In order to interpret the relationship between mountain vegetation belts and climatic factors, the spatial distribution of temperature-hu-midity indices (such as CI, WI, MI, Kira and Idm), which are calculated from observatory data in the QinghaiTibetan Plateau, were analyzed by using the Spatial Analyst Tool of ArcGIS 9.0 software. The conclusions show that dry altitudinal vegetation belt spectra in the northeastern and northwestern borders of the Qinghai-Tibet Plateau consisted of some or all of desert, desert-grass, forest, shrub, and steppe ; while alpine steppe, alpine meadow and alpine desert combine to form the dry and cold spectra in the middle of the plateau, and in the southern and southeastern the forest belt was preponderant. It suggested that the variation of climate from the peripheries to the central part in the plateau might influence the distribution pattern of vegetation spectra.