青藏公路工程活动对沿线植被覆盖的影响

发布时间：2018-06-19 20:23

本文选题：青藏公路 + 植被变化　；参考：《冰川冻土》2014年04期

【摘要】：利用2000-2012年的MODIS增强植被指数(Enhanced Vegetation Index,EVI)数据,结合研究区3个气象台站长期的气象数据,分析了青藏公路沿线植被变化总体趋势,以及不同整修措施对周边植被覆盖带来的不同影响.通过实地考察,选取了16个受工程活动影响的典型路边样方,3个铁路边样方和8个远离公路铁路的自然样方,对比路边和自然样方,分析植被的自我恢复能力以及4个主要影响因子.结果表明:青藏公路沿线植被覆盖变化是在整个气候变化的背景下,叠加了工程活动的影响.植被的恢复能力与其所在路段的地形、植被覆盖度、气候条件、以及工程活动的强度均有关系,抑制植被生长的因素越多,植被恢复越慢.
[Abstract]:Based on the MODIS enhanced vegetation Index (MODIS) data from 2000 to 2012 and the long-term meteorological data of three meteorological stations in the study area, the general trend of vegetation change along the Qinghai-Tibet Highway is analyzed. And the different effects of different renovation measures on the surrounding vegetation cover. Through field investigation, 16 typical roadside samples affected by engineering activities were selected, including 3 railway side samples and 8 natural ones far from highway and railway. The self-restoration ability of vegetation and four main influencing factors were analyzed. The results show that the vegetation cover change along the Qinghai-Tibet Highway is superimposed by engineering activities under the background of climate change. The restoration ability of vegetation is related to the terrain, vegetation coverage, climatic conditions and the intensity of engineering activities. The more factors inhibit vegetation growth, the slower the vegetation restoration.
【作者单位】：中国科学院地球环境研究所黄土与第四纪地质国家重点实验室;中交第一公路勘察设计研究院有限公司多年冻土区公路建设与养护技术交通行业重点实验室;
【基金】：中国科学院“西部之光”博士项目(Y229051370) 多年冻土区公路建设与养护技术交通行业重点实验室开放基金资助
【分类号】：U418.9;U415

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