title: [Relationships between horqin meadow NDVI and meteorological factors].
abstract: Based on the 2000-2006 MODIS 8-day composite NDVI and day-by-day meteorological data, the seasonal and inter-annual variations of Horqin meadow NDVI as well as the relationships between the NDVI and relevant meteorological factors were studied. The results showed that as for the seasonal variation, Horqin meadow NDVI was more related to water vapor pressure than to precipitation. Cumulated temperature and cumulated precipitation together affected the inter-annual turning-green period significantly, and the precipitation in growth season (June and July), compared with that in whole year, had more obvious effects on the annual maximal NDVI. The analysis of time lag effect indicated that water vapor pressure had a persistent (about 12 days) prominent effect on the NDVI. The time lag effect of mean air temperature was 11-15 days, and the cumulated dual effect of the temperature and precipitation was 36-52 days.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. cuipinggirl@163.com
authors.forename: Cui-ping
authors.initials: CP
authors.lastname: Qu
authors.forename: De-xin
authors.initials: DX
authors.lastname: Guan
authors.forename: An-zhi
authors.initials: AZ
authors.lastname: Wang
authors.forename: Chang-jie
authors.initials: CJ
authors.lastname: Jin
authors.forename: Jia-bing
authors.initials: JB
authors.lastname: Wu
authors.forename: Ji-jun
authors.initials: JJ
authors.lastname: Wang
authors.forename: Pan
authors.initials: P
authors.lastname: Ni
authors.forename: Feng-hui
authors.initials: FH
authors.lastname: Yuan
mesh_terms: D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D008685:Meteorological Concepts; D006109:Poaceae / Q000254:growth & development* / Q000502:physiology; D017215:Satellite Communications; D012621:Seasons