J
Jien Zhang
Researcher at Iowa State University
Publications - 8
Citations - 90
Jien Zhang is an academic researcher from Iowa State University. The author has contributed to research in topics: Artificial neural network & Precipitation. The author has an hindex of 4, co-authored 8 publications receiving 45 citations.
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Are We Getting Better in Using Nitrogen?: Variations in Nitrogen Use Efficiency of Two Cereal Crops Across the United States
TL;DR: In this article, the authors examined the relationship between state-level NUE and nitrogen fertilizer use for two major fertilizer-consuming crops, corn and winter wheat, which account for over half of national N fertilizer use in the United States.
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Increased extreme precipitation challenges nitrogen load management to the Gulf of Mexico
Chaoqun Lu,Jien Zhang,Hanqin Tian,William G. Crumpton,Mathew J. Helmers,Wei-Jun Cai,Charles S. Hopkinson,Steven E. Lohrenz +7 more
TL;DR: In this article, the authors used a process-based hydro-ecological model to reveal that over 60% of the land area of the Mississippi-Atchafalaya River Basin has experienced increasing extreme precipitation since 2000, and this area yields over 80% of nitrogen leaching loss across the region.
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Severe Long-Lasting Drought Accelerated Carbon Depletion in the Mongolian Plateau
Chaoqun Lu,Hanqin Tian,Hanqin Tian,Jien Zhang,Zhen Yu,Shufen Pan,Shree R. S. Dangal,Shree R. S. Dangal,Bowen Zhang,Bowen Zhang,Jia Yang,Jia Yang,Neil Pederson,Amy E. Hessl +13 more
Journal ArticleDOI
Extreme climate increased crop nitrogen surplus in the United States
TL;DR: In this article, the authors examined the relationship between county-level N surplus (the part of N that is not recovered by crops) and extreme climate conditions for corn in the U.S. during 1981-2016.