Interactions between CO2enhancement and N addition on net primary productivity and water-use efficiency in a mesocosm with multiple subtropical tree species

2014 ◽  
Vol 20 (7) ◽  
pp. 2230-2239 ◽  
Author(s):  
Junhua Yan ◽  
Deqiang Zhang ◽  
Juxiu Liu ◽  
Guoyi Zhou
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Primary Productivity ◽  
Tree Species ◽  
Net Primary Productivity ◽  
N Addition ◽  
Use Efficiency

scholarly journals Modeling grassland net primary productivity and water-use efficiency along an elevational gradient of the Northern Tianshan Mountains

2013 ◽  
Vol 5 (3) ◽  
pp. 354-365 ◽  
Author(s):  
QiFei Han ◽  
GePing Luo ◽  
ChaoFan Li ◽  
Hui Ye ◽  
YaoLiang Chen
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Primary Productivity ◽  
Net Primary Productivity ◽  
Elevational Gradient ◽  
Tianshan Mountains ◽  
Use Efficiency ◽  
Northern Tianshan

Using net primary productivity and water use efficiency for assessing the degree of land degradation and rehabilitation in the Northeast Asia dryland region

2020 ◽  
Author(s):  
Sinkyu Kang ◽  
Wenping Kang
Keyword(s):  
Species Composition ◽  
Water Use Efficiency ◽  
Water Use ◽  
Land Degradation ◽  
Primary Productivity ◽  
Net Primary Productivity ◽  
Northeast Asia ◽  
Term Trend ◽  
Use Efficiency

<p>Changes in vegetation productivity and species composition have been used as conventional indicators of land degradation and rehabilitation assessments. The two biophysical parameters vary nonlinearly during land change process with various time lags, which provide, as a whole, a useful framework to diagnose degree of land degradation and rehabilitation. In this study, the net primary productivity (NPP) and water use efficiency (WUE), which are the proxies of vegetation productivity and ecophysiological properties related to species composition, were combined to develop an eco-physiological framework to assess the degree of land degradation in the Northeast-Asia dryland regions (NADR) from 1982 to 2012. Results from long-term trends analysis showed early, middle or late degradation stages occurred in northern grassland and central barren or sparsely vegetated regions, respectively, while the rehabilitation prevailed in eastern croplands and forest, southern, and western grassland. In contrast, short-term trend analysis illustrated the recent rehabilitation in mideastern Mongolia and Loess Plateau, which was unseen in long-term trend analysis. The spatial patterns and temporal changes of land degradation and rehabilitation could be explained partly by either or both natural and anthropogenic factors. Longterm drying and warming might induce land degradation in northern and central NADR, respectively, while the recovery projects and wetting conditions after 2000s promoted the land rehabilitation in Loess Plateau and mid-eastern Mongolia. Here, our NPP–WUE framework may contribute further conceptual development and rapid assessments on land degradation and rehabilitation in wide geographic regions.</p>

scholarly journals Effects of grazing on net primary productivity, evapotranspiration and water use efficiency in the grasslands of Xinjiang, China

2018 ◽  
Vol 10 (4) ◽  
pp. 588-600 ◽  
Author(s):  
Xiaotao Huang ◽  
Geping Luo ◽  
Feipeng Ye ◽  
Qifei Han
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Primary Productivity ◽  
Net Primary Productivity ◽  
Use Efficiency

scholarly journals Gas exchange and water use efficiency in seedlings of tree species from caatinga under water levels and potassium

2021 ◽  
Vol 1 (53) ◽  
pp. 218
Author(s):  
Ediglécia Pereira Almeida ◽  
Antonio Lucineudo Oliveira Freire ◽  
Ivonete Alves Bakke ◽  
Cheila Deisy Ferreira
Keyword(s):  
Gas Exchange ◽  
Water Use Efficiency ◽  
Water Use ◽  
Tree Species ◽  
Water Levels ◽  
Use Efficiency

Seasonal Change in the CO2 Fixation Rate and Water-Use Efficiency of Broad-leaved Tree Species on Jeju Island

2020 ◽  
Vol 29 (2) ◽  
pp. 123-132
Author(s):  
Soonja Oh ◽  
Hyoun-Chol Kim ◽  
Hee-Suk Kang ◽  
Chang-Hoon Shin ◽  
Seok Chan Koh
Keyword(s):  
Water Use Efficiency ◽  
Seasonal Change ◽  
Water Use ◽  
Tree Species ◽  
Jeju Island ◽  
Fixation Rate ◽  
Use Efficiency
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