Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Feb 27;9:254. doi: 10.3389/fpls.2018.00254

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2018 Shi, Wang, Meng, Zhong and Sun.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Responses of (A,B) gross ecosystem productivity (GEP), (C,D) ecosystem respiration (ER), (E,F) net ecosystem CO₂ exchange (NEE), (G,H) evapotranspiration (ET), (I,J) water-use efficiency (WUE), (K) soil respiration (SR) to four treatments (C, control; N, nitrogen addition; D, drought; DN, nitrogen addition plus drought) at the middle (DOY 173) and the end (DOY 196) of the drought period. Impact-D = (X_D – X_C)/X_C × 100, or = (X_DN – X_N)/X_N × 100, where X indicates GEP, ER, NEE, ET, WUE, and SR. Different letters and asterisk indicate significant differences between the treatments (P < 0.05). The error bars represent standard errors of means (n = 6).