基于不同尺度NDVI定量分析的区域植被生态空间分布与演变研究——以漓江流域为例  

Study on the spatial distribution and evolution of regional vegetation ecosystem based on NDVI quantitative analysis in different scales:A case study of Lijiang River basin

作　　者：颜丽虹[1] 

机构地区：[1]桂林理工大学旅游学院,广西桂林541004

出　　处：《中国农业大学学报》2016年第7期105-112,共8页Journal of China Agricultural University

基　　金：广西优势特色重点学科开放基金项目(LYKF08);国家科技支撑计划课题(2012BAC16B04)

摘　　要：归一化植被指数NDVI越来越广泛地应用在区域植被生态环境演变研究中,而运用不同尺度的植被指数研究同一区域的植被生态演变,其研究结论是否具有一致性是衡量该研究方法是否具有可行性和推广性的关键点。本研究运用两种不同尺度的植被指数GIMMS-NDVI和MODIS-NDVI对漓江流域进行一定周期的植被生态演变研究,研究结果表明,两种方法推演的漓江流域植被生态演变趋势是基本一致的。因此,在漓江流域MODISNDVI能延续GIMMS数据的时空特征,从而能为漓江流域长周期的生态演变研究打下良好的数据基础。Normalized differential vegetation index（NDVI）is more and more widely used in the study of regional vegetation ecological environment evolution.Nevertheless,by using different vegetation index scales to study vegetation ecological evolution in the same region,whether the research conclusions are consistent or not is the key to measure the feasibility and repeatability of research methods.Two different scales of vegetation index,GIMMS NDVI and MODIS NDVI,were adopted to study the vegetation ecological evolution on the Lijiang River for a certain period.The results show that the deductions of the Lijiang River basin ecological evolution trend from the two methods are almost the same.In conclusion,MODIS-NDVI can continue the temporal and spatial characteristics of GIMMS data in the Lijiang River basin,which can provide a good foundation of data for the study on ecological evolution of Lijiang River basin in the long period.

关 键 词：植被 漓江流域 GIMMS-NDVI MODIS-NDVI 演变 

分 类 号：P461.7[天文地球—大气科学及气象学]