鑺濈綐鍖烘琚鐩栧害鐨勯仴鎰熶及绠?/p>
鐮旂┒鐩殑锛?/p>
鏍规嵁
landsat5
鍙疯鏁版嵁锛?/p>
璁＄畻鍑哄綊涓�鍖栨琚寚鏁?/p>
NDVI
鏉ヤ及绠楃儫鍙拌姖
缃樺尯妞嶈瑕嗙洊搴︼紝鐮旂┒鑺濈綐鍖哄湴琛ㄦ琚鐩栫姸鍐点�?/p>
鍘熺悊涓庢柟娉曪細
鉃?/p>
NDVI
鈥斺�斿綊涓�鍖栨琚寚鏁?/p>
NDVI=(NIR-R)/(NIR+R)
锛屾垨涓や釜娉㈡鍙嶅皠鐜囩殑璁＄畻銆?/p>
1
锛?/p>
NDVI
鐨勫簲鐢細妫�娴嬫琚敓闀跨姸鎬併�佹琚鐩栧害鍜屾秷闄ら儴鍒嗚緪灏勮
宸瓑锛?/p>
2
锛?/p>
-1<=NDVI<=1
锛岃礋鍊艰〃绀哄湴闈㈣鐩栦负浜戙�佹按銆侀洩绛夛紝瀵瑰彲瑙佸厜楂樺弽
灏勶紱
0
琛ㄧず鏈夊博鐭虫垨瑁稿湡绛夛紝
NIR
鍜?/p>
R
杩戜技鐩哥瓑锛涙鍊硷紝琛ㄧず鏈夋琚?/p>
瑕嗙洊锛屼笖闅忚鐩栧害澧炲ぇ鑰屽澶?/p>
3
锛?/p>
NDVI
鐨勫眬闄愭�ц〃鐜板湪锛岀敤闈炵嚎鎬ф媺浼哥殑鏂瑰紡澧炲己浜?/p>
NIR
鍜?/p>
R
鐨勫弽
灏勭巼鐨勫姣斿害銆傚浜庡悓涓�骞呭浘璞★紝鍒嗗埆姹?/p>
RVI
鍜?/p>
NDVI
鏃朵細鍙戠幇锛?/p>
RVI
鍊煎鍔犵殑閫熷害楂樹簬
NDVI
澧炲姞閫熷害锛?/p>
鍗?/p>
NDVI
瀵归珮妞嶈鍖哄叿鏈夎緝浣庣殑鐏?/p>
鏁忓害锛?/p>
4
锛?/p>
NDVI
鑳藉弽鏄犲嚭妞嶇墿鍐犲眰鐨勮儗鏅奖鍝嶏紝濡傚湡澹ゃ�佹疆婀垮湴闈€�侀洩銆佹灟
鍙躲�佺矖绯欏害绛夛紝涓斾笌妞嶈瑕嗙洊鏈夊叧
鉃?/p>
鐩墠宸茬粡鍙戝睍浜嗗緢澶氬埄鐢ㄩ仴鎰熸祴閲忔琚鐩栧害鐨勬柟娉曪紝杈冧负瀹炵敤