Inter-annual variation in vegetation index and analysis of factors affecting it in Daxing’an Mountains.
-
摘要: 通过遥感数据获取的归一化植被指数(NDVI)能够较好地反映植被的生长状况,并且为区域尺度、长时间序列的植被监测提供可能。本研究采用黑龙江大兴安岭地区2000—2009年MODIS/NDVI月值数据,分析和监测该地区年际NDVI变化,并利用趋势分析、假设检验、相关分析等方法研究了多种影响因子对该地区NDVI变化的影响。结果表明:研究区10年间年平均NDVI在0.455 4~0.509 3之间变化,平均值为0.477 3,年际间变化呈现出无规律的波动,没有显著的变化趋势;分析了森林火灾、温度和降水对NDVI的影响,一般森林火灾对过火区域NDVI的变化没有显著影响,重大森林火灾和过火面积小于1万hm2的特大森林火灾会促进过火区域NDVI的增长,过火面积大于1万hm2的特大森林火灾会使过火区域NDVI大幅降低;温度在10~25 ℃时会促进森林NDVI增长,在5 ℃以下对NDVI变化无显著影响;月降水量在75 mm以下会促进森林NDVI增长,大于100 mm对NDVI变化无显著影响。
-
关键词:
- MODIS/NDVI /
- 森林火灾 /
- 温度 /
- 降水
Abstract: The normalized difference vegetation index (NDVI) could accurately reflect the growing status of vegetation, and it could facilitate the long-term monitoring of vegetation at regional scale. In this study we monitored and analyzed the inter-annual changes of the NDVI based on the monthly MODIS/NDVI data of Daxing’an Mountains region from 2000 to 2009. And we used trend analysis, hypothesis testing and correlation analysis to investigate the effects of various factors on the changes of the NDVI values. The results showed that the annual NDVI ranged from 0.455 4-0.509 3, with the average NDVI of 0.477 3 from 2000 to 2009. No regular trend was observed for the annual variations. In addition, the effects of the forest fire, temperature and precipitation on the NDVI were analyzed. It was found that the general forest fires had no significant impact on the variation of NDVI value, while the serious forest fires and the major forest fires with the burned area smaller than 10 000 ha promoted the growth of the NDVI value; the major forest fires with the burned area larger than 10 000 ha forest fires significantly reduced the NDVI value. The temperature between 10 and 25 ℃ promoted the NDVI value, and no significant impact on the NDVI changes was observed when the temperature was below 5 ℃. The monthly precipitation less than 75 mm promoted the NDVI value, and no obvious impacts on the NDVI changes were found when the monthly precipitation was more than 100 mm.-
Key words:
- MODIS/NDVI /
- forest fire /
- temperature /
- precipitation
-
[1] 潘蔷.北京市植被指数变化及影响因素分析[D].哈尔滨:东北林业大学,2012. [2] PAN Q. Temporal and spatial variation of NDVI and its influencing factors in Beijing [D]. Harbin:Northeast Forestry University in Harbin, 2012. [3] 顾娟,李新,黄春林.基于时序MODIS NDVI的黑河流域土地覆盖分类研究[J].地球科学进展,2010,25(3):317-326. [4] GU J, LI X, HUANG C L. Land cover classification based on time-series MODIS NDVI data in Heihe River Basin [J]. Advances in Earth Science, 2010, 25(3):317-326. [5] 朴世龙,方精云.最近18年来中国植被覆盖的动态变化[J].第四纪研究,2001(4): 294-302. [6] PIAO S L, FANG J Y. Dynamic vegetation cover change over the last 18 years in China [J].Quaternary Sciences, 2001(4): 294-302. [7] BARBOSA H A, HUETE A R, BAETHGEN W E. A 20-year study of NDVI variability over the northeast region of Brazil[J]. Journal of Arid Environments, 2006, 67(2):288-307. [8] GUO G M. The investigation of large forest fires distribution in Northeast China[J]. Earth Science Frontiers, 2004,11(2):524. [9] TAO Y Z, DI X Y, JIN S. Research on temporal and spatial of forest fire in China [J].World Forestry Research, 2013,26(5):75-80. [10] 郭广猛.东北地区特大森林火灾的分布规律探讨[J].地学前缘, 2004,11(2):524. [11] CUI L L, SHI J, XIAO F J, et al. Variation trends in vegetation NDVI and its correlation with climatic factors in Eastern China[J]. Resources Science,2010,32(1):124-131. [12] 陶玉柱,邸雪颖,金森.我国森林火灾发生时空规律研究进展[J].世界林业研究, 2013,26(5):75-80. [13] PIAO S L, FANG J Y. Seasonal changes in vegetation activity in response to climate changes in China between 1982 and 1999[J]. Acta Geographica Sinica, 2003,58(1):119-125. [14] 崔林丽,史军,肖风劲,等.中国东部NDVI的变化趋势及其与气候因子的相关分析[J].资源科学,2010,32(1):124-131. [15] LI Y C, GONG P, LIU C X, et al. Vegetation cover changes and correlation with climatic factors in Northern China during 1982—1999 [J]. Resources Science, 2006,28(2):109-117. [16] 朴世龙,方精云.1982—1999年我国陆地植被活动对气候变化响应的季节差异[J].地理学报,2003,58(1):119-125. [17] 李月臣,宫鹏,刘春霞,等.北方13省1982—1999年植被变化及其与气候因子的关系[J].资源科学,2006,28(2):109-117. [18] SONG F Q, XING K X, LIU Y, et al. Monitoring and assessment of vegetation in Northern Shaanxi based on MODIS/NDVI [J]. Acta Ecologica Sinica, 2011,31(2):354-363. [19] 宋富强,邢开雄,刘阳,等.基于MODIS/NDVI的陕北地区植被动态监测与评价[J].生态学报,2011,31(2):354-363. [20] WANG Z M, GUO Z X, SONG K S, et al. Responses of vegetation NDVI in Northeast China to climate change [J].Chinese Journal of Ecology, 2009, 28(6):1041-1048. [21] GUO Z X, WANG Z M, SONG K S, et al. Changes of vegetation coverage in Northeast China from 1982 to 2003 [J]. Acta Botanica Boreali-Occidentalia Sinica, 2008, 28(1):155-163. [22] 王宗明,国志兴,宋开山,等.中国东北地区植被NDVI对气候变化的响应[J].生态学杂志, 2009, 28(6):1041-1048. [23] 国志兴,王宗明,宋开山,等.1982—2003年东北地区植被覆盖变化特征分析[J].西北植物学报, 2008,28(1):155-163. [24] GONG P, CHEN Z X,TANG H J, et al. Land cover classification based on MODIS temperature-vegetation index time-series data in Northeastern China[J].Transactions of the Chinese Society of Agricultural Engineering,2006,22(9):94-100. [25] YANG G B, TANG X M, NING J J, et al. Spatial and temporal distribution pattern of forest fire occurred in Beijing from 1986 to 2006 [J]. Scientia Silvae Sinica, 2009,45(7):90-95. [26] NICHOLSON S E, DAVENPORT M L, MALO A R. A comparison of the vegetation response to rainfall in the Sahel and East Africa, using normalized difference vegetation index from NOAA AVHRR[J].Climate Change,1990,17:209-241. [27] 宫攀,陈仲新,唐华俊,等.基于MODIS温度/植被指数的东北地区土地覆盖分类[J].农业工程学报,2006,22(9):94-100. [28] ZHANG X F, DONG W Z, CHENG C X, et al. Forest fires characteristics and variation analysis of Yichun in Xiaoxing'an Mountains [J]. Heilongjiang Meteorology, 2009,26(4):23-25. [29] XIAO J. The effect of meteorological factors on forest fire and fire prevention countermeasures [J]. Forestry of China, 2010(7):41. [30] 杨广斌,唐小明,宁晋杰,等.北京市1986—2006年森林火灾的时空分布规律[J].林业科学,2009,45(7):90-95. [31] WANG L N, WANG H D, LI W G. The research trend of forest fires in Heilongjiang Province nearly 25 years[J].Forest Fire Prevention,2006(3):16-17. [32] 张晓芳,董文站,程春香,等.小兴安岭伊春林区森林火灾特征及变化规律分析[J].黑龙江气象, 2009,26(4):23-25. [33] 肖健.气象因子对森林火灾的影响及防火对策[J].中国林业, 2010(7):41. [34] LI X B, SHI P J. Sensitivity analysis of variation in NDVI, temperature and precipitation in typical vegetation types across China[J]. Acta Phytoecologica Sinica, 2000, 24(3): 379-382. [35] 王丽娜,王惠东,李伟光.近25年黑龙江省森林火灾发生趋势的研究[J].森林防火,2006(3):16-17. [36] LÜ M, ZHONG Y Z.NDVI in the application progress in the study of the ecological environment[J]. Rural Economy and Science-Technology, 2011(6):11-14. [37] 李晓兵,史培军.中国典型植被类型NDVI动态变化与气温、降水变化的敏感性分析[J].植物生态学报, 2000, 24(3): 379-382. [38] ZHANG B Y, YU Z Z, LIU L Y. Study on the vegetation coverage changes monitoring of Beijing City by remote sensing [J]. Areal Research and Development, 2008,27(1):108-112. [39] CARLSON T N, RIPLEY D A. On the relation between NDVI, fractional vegetation cover and leaf area index [J].Remote Sensing of Environment, 1997, 62(3): 241-252. [40] LI C H, YANG Z F. Spatio-temporal changes of NDVI and their relations with precipitation and runoff in the Yellow River Basin[J].Geographical Research,2004,23(6):743-759. [41] GAO L M, CHEN X P, HUANG Y. Study on eco-environmental spatio-temporal change of different ecological divisions in Northwest of China based on RS and GIS [J]. Journal of Desert Research, 2007, 27(l):65-71. [42] 吕蒙,钟悦之.NDVI在生态环境研究中的应用进展[J].农村经济与科技,2011(6):11-14. [43] 张本昀,喻铮铮,刘良云,等.北京山区植被覆盖动态变化遥感监测研究[J].地域研究与开发,2008,27(1):108-112. [44] 李春晖,杨志峰.黄河流域NDVI时空变化及其与降水/径流关系[J].地理研究,2004,23(6):743-759. [45] 高丽敏,陈兴鹏,黄艳.基于RS和GIS的中国西北不同生态类型区生态环境时空变化研究[J].中国沙漠,2007,27(l):65-71. -

计量
- 文章访问数: 765
- HTML全文浏览量: 67
- PDF下载量: 13
- 被引次数: 0