露天煤矿区植被变化遥感监测与受损程度评估  

Remote Sensing Monitoring of Vegetation Change and Assessment of Damage Degrees in the Opencast Coal Mine Area

作　　者：李林峰 黄洁 杨显华[2,3] 邵怀勇 仙巍[4] LI Linfeng

机构地区：[1]成都理工大学,四川成都610059 [2]稀有稀土战略资源评价与利用四川省重点实验室,四川成都610081 [3]四川省地质调查院,四川成都610081 [4]成都信息工程大学,四川成都610225

出　　处：《地理空间信息》2019年第1期72-76,124,共6页Geospatial Information

基　　金：中国地质调查局地调资助项目(121201203000160009);四川省矿山环境监测资助项目(1212011120019)

摘　　要：以青海省聚乎更露天煤矿区为研究区,利用2001～2016年TM影像,提取了研究区植被覆盖度。以每3 a为一个时间节点,对6期数据进行像元尺度上的线性回归,首先分析了研究区内植被覆盖度变化趋势,并通过植被等级转移矩阵展现不同等级植被间的转移情况;再结合t分布,定量评估了研究区植被受损情况;最后利用剖面分析揭示了研究区恢复治理情况。结果表明,研究区植被长势整体上与时间推移呈负向变化趋势;露天采场、排土场等场地的修建直接摧毁了原有植被,高植被覆盖度区域受损最严重,矿区周边植被受影响程度与距离呈负相关;区内已全面开展恢复治理工作,部分渣山治理效果较为显著。Taking Juhugeng opencast coal mine area in Qinghai Province as the research area, we extracted vegetation coverage by making use of TM images from 2001 to 2016 in this paper. First of all, we analyzed the change trend of vegetation coverage by linear regression of the 6-level data at a time node of every 3 years, and demonstrated the transferring situation between different grades vegetation through the vegetation grade transfer matrix. And then, combining with t distribution, we quantitative assessed the vegetation damage of the study area. At last, we used profile analysis to reveal the situation of restore. The results indicate that the growth of vegetation in the study area shows a negative trend. The constructions of open pit, mine dump and other fields have directly destroyed the original vegetation. High vegetation coverage area has been most severely damaged. The vegetations in the mine surrounding area are negatively correlated with the distance. The restore and governance work has been implemented in the study area, and especially has an obvious effect on the slag mountain area.

关 键 词：植被覆盖度 露天煤矿 T分布 受损评估 恢复治理 

分 类 号：P237[天文地球—摄影测量与遥感]