摘要
为研究内蒙古锡林浩特市胜利矿区近30 a植被覆盖度变化情况及其影响因素,采用Sen斜率估计和M-K检验法分析NDVI变化趋势;基于像元尺度分析植被变化,研究其空间差异性;通过转移矩阵研究植被覆盖度稳定性、降雨和地形因子对植被覆盖度的影响程度。结果表明:(1)近30 a胜利矿区NDVI均值呈缓慢下降趋势;(2)植被损伤区面积占研究区总面积的23. 02%,分布于矿业景观和城镇建设景观;植被恢复区面积占研究区总面积的3. 11%,分布于人工草场与湿地;(3)植被覆盖度不稳定,易发生转移;(4)排土场高程和坡度与植被覆盖度呈显著负相关,坡向与植被覆盖度关系不显著。
This paper focused on the change of vegetation coverage and its influencing factors in Xilinhot’s Shengli mining area in recent 30 years in Inner Mongolia. Sen gradient estimation and M-K test were used to analyze the trend of NDVI. Vegetation coverage changes were analyzed based on pixel scale and their spatial differeces were studied. The stability of vegetation coverage,the influence of rainfall and topography tactors were studied by transter matrix. The results indicated that: (1) The average NDVI showed a slowly decreasing trend during the past 30 years;(2) The area of damaged vegetation accounted for 23. 02% of the study area,mainly distributed in mining area and urban building land,such as open pits and dumping sites;The area of vegetation restoration accounted for 3. 11% of the study area,mainly distributed in artificial grassland and Xilin River wetland;(3) Vegetation coverage was extremely unstable and easy to transfer;(4) There was a significant negative correlation between slope and vegetation coverage in open-pit coal mine dumps,the relationship between slope direction and vegetation coverage was not significant.
作者
邢龙飞
黄赳
雷少刚
曹志国
XING Longfei;HUANG Jiu;LEI Shaogang;CAO Zhiguo(School of Environment Science and Spatial Informatics China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;Insitute for Land Resources,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China;Engineering Research Center for Mine Ecological Restoration,Ministry of Education,Xuzhou 221116,Jiangsu,China;Science and Technology Department,China Energy Investment Corporation Limited,Bejing 100011,China)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2019年第3期61-69,共9页
Journal of Henan Polytechnic University（Natural Science）
基金
国家重点研发计划项目(2016YFC0501107)
国家自然科学基金资助项目(51504241
U1710120)
国家科技基础性工作专项重点项目(2014FY110800)
