辉腾锡勒风电场局域环境植被特征分析研究

THE ANALYSIS RESEARCH OF BOTANICAL CHARACTERISTICS IN LOCAL ENVIRONMENT OF WIND POWER PLANT IN HUITENGXILE

以内蒙古辉腾锡勒风电场局域环境植被为研究对象,调查风电场局域环境内植被的物种组成、株高、水分适应性及生物量,分析该区域的植被特征。2011年至2012年共计在研究区域内选择了30个有代表性的样方,做1m×1m的样方,重复3次。记录各植被的种名、株高、株数、丛幅,并将地上部分剪下,烘干称重,计算各物种地上生物量。结果表明:(1)在30个样方内共计采集物种80种,其中以旱生植物为主,表明当地水资源条件较差。(2)辉腾锡勒草原生态环境的恶化与人为的过度干扰导致植被长势较差,架设风机的施工过程也会破坏植被,以架设风机点为中心160m2-250m2范围内为裸土地(不计算施工过程新开道路及掩埋线缆工程所破坏的植被)。(3)物种多样性方面,不同样地间丰富度指数、Simpson指数、Shannon-wiener指数、poelou均匀度指数四项指标均有波动,但其变化规律并不是随着风机数量的增减而变化,其变化的主要与样方周围的立地条件相关。(4)不同样方内生物量存在着一定差异,不同样方间生物量差异由东向西呈上升趋势,这与研究区风机数量特点成反比,即随着风机数量的增加其样地内生物量有下降的趋势。

The research studied plant communities by in Huitengxile Inner Mongolia. Survey the species composition, plant height, water adaptability and biomass live weight to analysis the Vegetation characteristics in the area. 30 typical samples which were all 1 m x l m were set in this research area during 2011 to 2012. Recorded special names, plant heights, plant numbers and Plexus Web of these plant communities and calculated the aboveground biomass by Weight every special dry weiglit. Every test has a three times repeat. The result shows：（ 1 ）There appeared 80 plant species in these 30 samples. It suggested that the local water quality source is not sufficient for these xerophytes - based communities are majority. （2） Environmental degradation in huiengxile grassland and serious anthropogenic interference lead plants cannot grow normally, The plants can also destructed during Fan construction. The land is a 160m2 to 250m2 naked area around each fan. （plant destruction during new road construction and cable bury is not take into account） （3）In species diversity respect,Four evaluating indicators （diversity index, simpson index, Shannon -wiener index and poelou evenness） fluctuate between samples. But the variation is not related to the fan numbers, it generally correlates with site conditions around （4） There are some differences in biomass live weight between samples,biomass live weight generally tends up from east samples to west samples, it is inversely proportional to the number of fans. So with the number of fans increased the biomass live weight declined.