石油开采对延安周边黄土高原丘陵沟壑区群落多样性的影响
投稿时间:2018-09-19  修订日期:2018-10-15  点此下载全文
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李刚 1.国土资源部退化及未利用土地整治工程重点实验室陕西 西安 7100752.陕西省土地工程建设集团陕西 西安 7100753.陕西省土地整治工程技术研究中心陕西 西安 710075
4. 陕西地建土地工程技术研究院有限责任公司
陕西 西安 710075 
454923994@qq.com 
中文摘要:以延安市区周边黄土高原为研究对象,对不同年限石油开采后油井周边植被进行调查,对比研究了油井开采对该地区植物群落组成和物种多样性的影响。结果表明,油井周边植物重要值最大的植物有:虎尾草、茵陈蒿、苣买菜,其重要值分别为52.57、42.55和41.80,表明这些植物对石油污染的耐受力较强。随着距油井距离的增加,物种数S、Margale指数D、Shannon-Wiener指数H’、Pielou指数E均显示出先降低后增加的规律,物种多样性与距离呈正相关关系,说明石油开采会对植物群落和植物的生长产生一定的抑制作用。Margale指数与Shannon-Wiener指数呈显著正相关(P<0.01),说明各样方中物种的总体数目与样方内物种种类数的多少密切相关。均匀度指数Pielou与Margale指数、Shannon-Wiener指数之间成轻度相关或不相关关系(P>0.05),说明物种种类的多少、物种总个体数的多少与植被分布的均匀程度关系不大。
中文关键词:石油开采  黄土高原  群落多样性
 
Research on Effects of Oil exploitation on community diversity in hilly and gully regions of the Loess Plateau around Yan''an
Abstract:Taking the Loess Plateau around Yan''an as the research object, the vegetation around the oil well after oil exploitation was investigated, and the effects of oil well mining on plant community composition and species diversity were studied. The results showed that the plants with the most important plants around the oil wells were: chloris, yam, and chicory. The important values were 52.57, 42.55 and 41.80, respectively, indicating that these plants were more tolerant to petroleum pollution. With the increase of the distance from the oil well, the number of species S, Margale index D, Shannon-Wiener index H'', and Pielou index E all showed a law of decreasing first and then increasing. The species diversity was positively correlated with the distance, indicating that the oil exploitation would be a plant. The growth of communities and plants has a certain inhibitory effect. There was a significant positive correlation between the Margale index and the Shannon-Wiener index (P<0.01), indicating that the total number of species in each sample is closely related to the number of species in the sample. There is a slight correlation or no correlation between the uniformity index Pielou and the Margale index and the Shannon-Wiener index (P>0.05), indicating that the number of species and the total number of species are not related to the uniformity of vegetation distribution.
keywords:Oil exploitation  Loess Plateau  community diversity
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