基于多期遥感数据的华蓥山中段植被覆盖变化研究  

Study on vegetation cover change in the middle section of huaying mountain based on multi-period remote sensing data

作　　者：杨玲[1] 周学铖 熊丽媛 徐争强[1] 胡祎 吕品[1] YANG Ling;ZHOU Xue-cheng;XIONG Li-yuan;XU Zheng-qiang;HU Yi;LYU Pin(Sichuan Institute of Nuclear Geology,Chengdu Sichuan 610052,China;Sichuan Chuanhe Geological Engineering.,Ltd,Chengdu Sichuan 610052,China)

机构地区：[1]四川省核工业地质调查院,四川成都610052 [2]四川川核地质工程有限公司,四川成都610052

出　　处：《河北省科学院学报》2020年第3期46-54,共9页Journal of The Hebei Academy of Sciences

基　　金：中国地质调查局项目(DD20190524)。

摘　　要：本文基于1988年至2018年间共7期TM/OLI数据,通过计算NDVI反演了研究区植被覆盖度,分析了各时期植被覆盖变化情况、变化原因以及区域生态环境变化趋势。结果表明:①自1988年9月至2018年4月近30年时间里,研究区植被一度受到了大面积破坏,但因人类工程及时修复,破坏态势终止并转好,且总体形势向好。②人类活动是导致生态环境变化的重要因素,大量获取林木资源、无序矿山开采,易造成植被覆盖面积持续减少,对生态环境不利;较少人为干扰环境下,植被呈自然缓慢恢复态势;在有利政策或工程推动下,植被覆盖面积迅速增长,生态环境持续向好。③植被覆盖等级是可以相互转化的,对林区资源的合理利用,并及时加以修复,即可达到社会经济发展的需要,也可维持生态环境持续稳定,最终可以达成人与自然双赢的形势。Based on seven TM/OLI data from 1988 to 2018,the vegetation coverage in the study area was retrieved by calculating NDVI,and the changes of vegetation coverage in different periods,reasons and trends of regional ecological environment were analyzed.The results show that:(1)During the past 30 years from September 1988 to April 2018,the vegetation in the study area was once destroyed in a large area,but due to the timely restoration of human engineering,the destructive situation was terminated and improved,and the overall situation was better.(2)Human activity is an important factor leading to the change of ecological environment.Large-scale acquisition of forest resources and disorderly mining can easily lead to the continuous reduction of vegetation coverage,which is harmful to the ecological environment;under less human disturbance,vegetation is slowly recovering naturally;under the promotion of favorable policies or projects,vegetation coverage increases rapidly and the ecological environment continues to improve.(3)Vegetation coverage can be converted to each other.Reasonable utilization of forest resources and timely restoration can meet the needs of social and economic development,and also maintain the sustained stability of the ecological environment,and ultimately achieve a win-win situation between man and nature.

关 键 词：遥感 植被覆盖度 人类活动 华蓥山 生态环境 

分 类 号：Q948.1[生物学—植物学]