Vegetation net primary productivity and its temporal-spatial changes in Henan province during 1994—2008
LI Junling, CHEN Huailiang, ZOU Chunhui, LIU Zhongyang, GUO Qile, GUO Peng
Ecology and Environment . 2011, (10): 1424 -1429 .  DOI: 10.16258/j.cnki.1674-5906(2011)10-1424-06

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