Zhang, Ke
Kimball, John S.
Nemani, Ramakrishna R.
Running, Steven W.
Hong, Yang
Gourley, Jonathan J.
Yu, Zhongbo
Article History
Received: 25 June 2015
Accepted: 6 October 2015
First Online: 30 October 2015
Competing interests
: The authors declare no competing financial interests.