閬ユ劅鎶�鏈笌搴旂敤 鈥衡�� 1996, Vol. 11 鈥衡�� Issue (4): 26-34.DOI: 10.11873/j.issn.1004-0323.1996.4.26

鈥� 鎶�鏈柟娉� 鈥� 涓婁竴绡�    涓嬩竴绡�

鍦ㄦ鐗╃敓闀垮懆鏈熷唴鍘跨骇鍖哄煙妞嶈鎸囨暟鐨勬椂绌烘紨鍙樼壒寰佸垎鏋�

闄堜咕   

  1. 鍏板窞骞叉棻姘旇薄鐮旂┒鎵�
  • 鍑虹増鏃ユ湡:1996-12-20 鍙戝竷鏃ユ湡:2012-09-11

Analysis of the Space temporal Evolution Feature of Vegetation Index in County District Level During the Plant Growth Cycle

 Chen Qian   

  1. (Lanzhou Institute of Arid Meteorology,Lanzhou 730000)
  • Online:1996-12-20 Published:2012-09-11

鎽樿锛� 閲囩敤锛戯紮锛欙紤鑷筹紤锛欙紮锛掑勾鏅寸┖鏃剁殑锛集锛★肌鍗槦锛★级锛疾锛茶祫鏂欙紝璁$畻鐢樿們鐪佹渤涓滃湴鍖猴紪锛愪釜鍘匡紙甯傦級浣滅墿鍜岀墽鑽夌敓闀垮懆鏈熷唴鏍囧噯鍖栧樊妞嶈鎸囨暟锛堬籍锛わ级锛╋級鐨勫钩鍧囧�煎拰鏍囧噯宸紝骞堕�愬幙缁樺埗鍏舵椂闂存紨鍙樻洸绾垮拰鐩存柟鍥俱�傞�夊彇浠ュ啘浣滅墿銆佽崏鍦板拰妫灄鑽夊湴娣峰悎涓轰富鐨勪笁绫诲幙浣滃姣斿垎鏋愶紝鐮旂┒鍘跨骇鍖哄煙妞嶈鎸囨暟鏃剁┖鍙樺寲涓庝綔鐗╁拰鐗ц崏鐢熻偛鏈熺殑鍏崇郴銆傚垎鏋愶紤锛欙紮锛戣嚦锛戯紮锛欙紥骞村害鍐皬楹︾敓闀垮懆鏈熷唴閬囧埌涓ラ噸骞叉棻鐨勬儏鍐碉紝涓哄共鏃辩洃娴嬨�佷及浜у拰鍖哄垎鍦熷湴浣跨敤绫诲瀷閫夋嫨鏈�浣虫椂鐩告彁渚涗緷鎹�

鍏抽敭璇�: 鍖哄煙妞嶈鎸囨暟 , AVHRR璧勬枡 , 妞嶇墿鐢熼暱鍛ㄦ湡

Abstract: In this paper mean values of normalized difference vegetation index(NDVI) and their standard deviations in 60 counties or cities of the eastern Gansu province using the NOAA satellite AVHRR data selected the clear days during 1991锝�1992 have been calculated.Their temporal profiles and histograms of each county are drawn.Three types of county with major crop,grassland and forest mixed with grassland have been selected and comparatively analysed.The space temporal evolution of vegetation index in county destrict level related to the crop and pasture stage is studied.The status of the winter wheat growth cycle during 1991锝�1992 under serious drought condition is analyzed as a focal point.The results provide the basis of optimum phase and parameters for monitoring drought,crop yield estimation and land use classification.

Key words: Regional vegetation index , AVHRR data , Plant growth cycle

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