1. College of Earth Science, Chengdu University of Technology, Chengdu 610059, China 2. Institute of Ecoenvironment and Agrometeorology, Chinese Academy of Meteorological Sciences, Beijing 100081, China 3. College of the Engineering and Technical, Chengdu University of Technology, Leshan 614000, China 4. College of Management Science, Chengdu University of Technology, Chengdu 610059, China
The correlation analysis between climatic factors and vegetation indexes can not only reflect the impact of climate change on vegetation but also predict the trend of vegetation in the future. Based on the data of MODIS13A1 C6 NDVI of the Three River headwater region and combined with 1∶1 000 000 map of vegetation types and meteorological data, the authors analyzed spatial-temporal characteristics of NDVI and the relationship between vegetation indexes and climatic factors by using correlation analysis from 2000 to 2016. The results are as follows: ① NDVI increased with a rate of 0.8%/10a in Three River headwater region during 2000—2016, whereas vegetation cover increased from the northwest to southeast. ② Climate factors had a greater influence on vegetation growth in the early and middle growing season, but the correlation between NDVI and climate factors was not obvious in the later growing season. ③ The partial correlation between NDVI and climate factors in the vegetation growing season of the study area showed that the influence of the air temperature on NDVI of the alpine meadow grasslands and alpine grasslands was greater than that of precipitation in the early growing season. However, during the middle of the growing season, the precipitation had a greater impact on the growth of three different types of vegetation.
徐嘉昕, 房世波, 张廷斌, 朱永超, 吴东, 易桂花. 2000—2016年三江源区植被生长季NDVI变化及其对气候因子的响应[J]. 国土资源遥感, 2020, 32(1): 237-246.
Jiaxin XU, Shibo FANG, Tingbin ZHANG, Yongchao ZHU, Dong WU, Guihua YI. NDVI changes and its correlation with climate factors of the Three River-Headwater region in growing seasons during 2000—2016. Remote Sensing for Land & Resources, 2020, 32(1): 237-246.
Pettorelli N, Vik J, Mysterud A , et al. Using the satellite-derived NDVI to assess ecological response to environmental change[J]. Trends in Ecology and Evolution, 2005,20(9):503-510.
Sun H Y, Wang C Y, Niu Z , et al. Analysis of the vegetation cover change and the relationship between NDVI and environmental factors by using NOAA time series data[J]. Journal of Remote Sensing, 1998,2(3):204-210.
[3]
Bounoua L, Collatz G J, Los S O , et al. Sensitivity of climate to changes in NDVI[J]. Journal of Climate, 2000,13(13):2277-2292.
Li B G, Tao S . Correlation between AVHRR NDVI and climate factors[J]. Acta Ecologica Sinica, 2000,20(5):898-902.
[5]
Xiao J, Moody A . Geographical distribution of global greening trends and their climatic correlates:1982—1998[J]. International Journal of Remote Sensing, 2005,26(11):2371-2390.
[6]
Ma M G, Wang J, Wang X M , et al. Advance in the inter-annual variability of vegetation and its relation to climate based on remote sensing[J]. Journal of Remote Sensing, 2006,10(3):421-431.
[7]
Fang S B, Xu D Y, Zhang X S . Desertification process and its driving meteorological factors in Mu Us Sandland[J]. Journal of Desert Research, 2009,29(5):796-801.
Wang Q, Zhang T B, Yi G H , et al. Tempo-spatial variations and driving factors analysis of net primary productivity in the Hengduan Mountain area from 2004 to 2014[J]. Acta Ecologica Sinica, 2017,37(9):3084-3095.
[9]
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
[10]
Zhou L M, Tucker C J, Kaufmann R K , et al. Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981—1999[J]. Journal of Geophysical Research, 2001,106(D17):20069-20083.
[11]
Leahy M G, Jollineau M Y, Howarth P J , et al. The use of Landsat data for investigating the long-term trends in wetland change at Long Point,Ontario[J]. Canadian Journal of Remote Sensing, 2005,31(3):240-254.
[12]
Fu B H, Burgher I . Riparian vegetation NDVI dynamics and its relationship with climate,surface water and groundwater[J]. Journal of Arid Environments, 2015,113:59-68.
Liu X F, Ren Z Y, Lin Z H , et al. The spatial-temporal changes of vegetation coverage in the Three-River Headwater region in recent 12 years[J]. Acta Geographica Sinica, 2013,68(7):897-908.
[14]
Shen B, Fang S B, Li G . Vegetation coverage changes and their response to meteorological variables from year 2000 to 2009 in Naqu,Tibet,China[J]. Canadian Journal of Remote Sensing,2014,40:( 1):67-74.
Zhao Y P, Zhang X Z, Wang J S , et al. Correlation analysis between NDVI and climatic factors of grassland ecosystems in the northern Tibetan Plateau from 1982 to 2003[J]. Resources Science, 2009,31(11):1988-1998.
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.
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.
Lin H, Xiong Y J, Wan L F , et al. Temporal and spatial variation of MODIS vegetation indices in Hunan Province[J]. Chinese Journal of Applied Ecology, 2007,18(3):581-585.
Shao Q Q, Liu J Y, Huang L , et al. Integrated assessment on the effectiveness of ecological conservation in Sanjiangyuan National Nature Reserve[J]. Geographical Research, 2013,32(9):1645-1656.
Chen Q, Zhou Q, Zhang H F , et al. Spatial disparity of NDVI response in vegetation growing season to climate change in the Three-River Headwaters region[J]. Ecology and Environment, 2010,26(6):1284-1289.
[21]
张新时 . 中国植被及其地理格局[M]. 北京: 地质出版社, 2007.
Zhang X S. Vegetation of China and Its Geographic Pattern[M]. Beijing: Geological Publishing House, 2007.
Fan W W . Analysis of NDVI Changes and Its Climate Driving Factors in the Three River-Headwater Region During 2000—2014[D]. Chengdu:Chengdu University of Technology, 2017.
[23]
任雨 . 青藏高原的极端气候:变化事实与概率模拟[D]. 北京:中国科学院研究生院, 2009.
Ren Y . Climate Extremes over the Qinghai-Tibetan Plateau:Observed Changes and Probability Simulation[D]. Beijing:Graduate University of Chinese Academy of Sciences, 2009.
Liu F G, Zhang H F, Zhou Q , et al. Distribution features of hail disasters and its formation analysis of the Three-River Headwaters region[J]. Arid Land Geography, 2013,36(2):238-244.
[25]
王建林, 关法春 . 高级作物生理学[M]. 北京: 中国农业大学出版社, 2013.
Wang J L, Guan F C. Advanced Crop Physiology[M]. Beijing: China Agricultural University Press, 2013.
He Y X, Yi G H, Zhang T B , et al. The EVI trends and driving factors in Red River basin affected by the “corridor barrier” function during 2000—2014[J]. Acta Ecologica Sinica, 2018,38(6):2056-2064.
Mao F, Lu Z G, Zhang J H , et al. Relations between AVHRR NDVI and climate factors in northern Tibet in recent 20 years[J]. Acta Ecologica Sinica, 2007,27(8):3198-3205.
Yan L K . Application of correlation coefficient and biased correlation coefficient in related analysis[J]. Journal of Yunnan Finance and Trade Institute, 2003,19(3):78-80.
Li H X, Liu G H, Fu B J . Response of vegetation to climate change and human activity based on NDVI in the Three-River Headwaters region[J]. Acta Ecologica Sinica, 2011,31(19):5495-5504.