长江流域资源与环境 >> 2019, Vol. 28 >> Issue (04): 917-927.doi: 10.11870/cjlyzyyhj201904017

• 生态环境 • 上一篇    下一篇

近30年来庐山风景名胜区NDVI时空变化及其潜在影响因素分析

宋鸿1,黄跃飞2,刘海2,3,4*,王敏2,钟滨4   

  1. (1. 湖北大学商学院,湖北 武汉 430062;2.湖北大学资源环境学院,湖北 武汉 430062;
    3.武汉大学遥感信息工程学院,湖北 武汉 430079;4.江西省基础地理信息中心,江西 南昌 330209)
  • 出版日期:2019-04-20 发布日期:2019-05-09

Spatial-temporal Change of NDVI and Its Potential Influence Factors in Lushan Scenic Area for Nearly 30 years

SONG Hong1,HUANG Yue-fei2, LIU Hai2,3,4, WANG Min2, ZHONG Bin4   

  1. (1. Schoil of Business, Hubei University, Wuhan 430062, China;2. Faculty of Resources and Environment Science, Hubei University, 
    Wuhan 430062, China; 3. School of Remote Sensing and Information, Wuhan University, Wuhan 430062,China;
    4. Jiangxi Provincial Geomatics Center, Nanchang 330209, China)

  • Online:2019-04-20 Published:2019-05-09

摘要: 植被是旅游吸引力的重要构成因素,研究景区归一化植被指数(NDVI)变化对风景名胜区的可持续发展至关重要。以国家首批重点风景名胜区——庐山风景名胜区为研究区,采用近30年来的Landsat NDVI数据,基于趋势分析法分析了研究区NDVI的时空变化特征,并从气候、地形因子以及旅游活动等方面,探讨了研究区NDVI变化的潜在影响因素。研究表明:近30年来庐山风景名胜区NDVI整体在波动中呈现下降趋势,其中在1988~2001年和2002~2017年两个时间段呈现先降后升趋势,但期末回升水平低于期初水平。空间上,NDVI明显降低的区域分布在主要景点及游客路线周围,NDVI增加的区域分布在高密度林地覆盖区。在各影响因素中,对于气候因素,由于研究区面积有限,热量和降水的空间分布差异较小,降水和气温与NDVI相关性不显著,气候因素不是NDVI变化的主要影响因素。对于地形因素,高程和坡度较高的区域,分布着主要景点和游客集散区,人为因素的干扰较大,NDVI值较低;阳坡与阴坡相比,光照资源更为丰富,此外,阴坡多为景点和游客路线等人类活动较强的区域,阳坡区域NDVI较高。对于旅游活动,研究期内游客人数逐年上升,旅游活动增强,景点、游客中心及游客路线周围建设用地和裸地的面积明显增加,NDVI呈下降趋势,旅游活动是NDVI变化的主要影响因素。

Abstract: Vegetation is an important component of tourism attractiveness. Studying the change of Normalized Difference Vegetation Index(NDVI) in scenic spots is crucial to the sustainable development of scenic spots. Taking Lushan Scenic Spots, the first batch national key scenic spots, as the research area, the trend analysis was used to analyze the spatial-temporal change characteristics of NDVI based on the nearly 30 years Landsat NDVI data. Then, the potential influence factors of NDVI change were discussed from the aspects of climate, topographic and tourism activities. The results showed that: for nearly 30 years, the NDVI in Lushan Scenic Area showed a downward trend in the overall fluctuations. Among them, the two periods of 1988-2001 and 2002-2017 showed a trend of decreasing first, but the end of the rally was lower than the beginning level. In terms of space, the regional distribution of NDVI decreased significantly around the major scenic spots and tourist routes, while NDVI increased significantly was in the high-density forest cover region. Among the influencing factors, for the climate factor, due to the limited region of the research area, the spatial distribution of temperature and precipitation was small, and the correlation between temperature and precipitation and NDVI was not significant. Climate factor was not the main influencing factor of NDVI changes. For terrain factor, higher elevation and slope was distributed with major scenic spots and tourist distribution, where the interference of human factors was relatively large, and the value of NDVI was relatively low. Compared with the shady-slope, the sunny-slope was more abundant in light resources. In addition, the shady-slope was mostly a region with strong human activities such as scenic spots and tourist routes, and the NDVI was higher in the sunny-slope. For tourism activities, with the number of tourists and tourism activities increased year by year during the research period, the construction land and bare land around scenic spots, visitor centers and tourist routes also increased significantly, leads to downward trend of NDVI. Tourism activities were the main influencing factors of NDVI changes.

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