Is this just about evi ?

这事跟evi有关吗?

Weier , j. and herring , d. measuring vegetation ( ndvi and evi ) . Nasa earth observatory . Accessed june 29 , 2010 .

weierj.和herringd.植被测量（植被指数和经济脆弱性指数）.nasa地球大观.检索于2010年6月29日.

In the future , the goddard team expects fluorescence measurements will complement evi and ndvi , helping farmers and aid workers to respond to extreme weather events and potential crop failures and famines sooner .

戈达德宇航中心的研究人员希望荧光测试法未来能够弥补增强型植被指数和标准植被指数的不足，为农民和救援人员提供即时信息，帮助他们迅速应对极端天气、饥荒和农作物歉收的问题。