Land productivity and water use efficiency of maize-soybean strip intercropping systems in semi-arid areas: A case study in Punjab Province, Pakistan

2021 ◽  
pp. 127282
Author(s):  
Muhammad Ali Raza ◽  
Hina Gul ◽  
Jun Wang ◽  
Hassan Shehryar Yasin ◽  
Ruijun Qin ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Areas ◽  
Land Productivity ◽  
Punjab Province ◽  
Use Efficiency ◽  
Strip Intercropping ◽  
Semi Arid

Nutrient and tillage strategies to increase grain yield and water use efficiency in semi-arid areas

2016 ◽  
Vol 178 ◽  
pp. 137-147 ◽  
Author(s):  
Yanhao Lian ◽  
Shahzad Ali ◽  
Xudong Zhang ◽  
Tianlu Wang ◽  
Qi Liu ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Arid Areas ◽  
Use Efficiency ◽  
Semi Arid

Water Application Methods and Water Use Efficiency for Tomatoes Production in Semi-Arid Areas of Eastern Kenya

1999 ◽  
Vol 65 (1-2) ◽  
pp. 51-56
Author(s):  
SN Nguluu ◽  
JK Itabari ◽  
BM Ikombo ◽  
JM Wambua ◽  
EM Gichangi
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Arid Areas ◽  
Water Application ◽  
Use Efficiency ◽  
Application Methods ◽  
Semi Arid

Increased drought and atmospheric CO2 positively impact intrinsic water use efficiency but do not promote tree growth in semi-arid areas of northwestern China

Trees ◽  
2019 ◽  
Vol 33 (3) ◽  
pp. 669-679 ◽  
Author(s):  
Kanglong Lu ◽  
Ning Chen ◽  
Xiaowei Zhang ◽  
Jingru Wang ◽  
Minghao Wang ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Tree Growth ◽  
Atmospheric Co2 ◽  
Northwestern China ◽  
Arid Areas ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Spatiotemporal Analysis of Evapotranspiration and Effects of Water and Heat on Water Use Efficiency

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3019
Author(s):  
Yuan-Yuan Tang ◽  
Jian-Ping Chen ◽  
Feng Zhang ◽  
Shi-Song Yuan
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Negative Impact ◽  
Great Influence ◽  
Hydrological Processes ◽  
Arid Areas ◽  
Important Indicator ◽  
Ecosystem Carbon ◽  
Use Efficiency ◽  
Semi Arid

Water Use Efficiency (WUE) is an important indicator of the carbon cycle in the hydrological and ecological system. It is of great significance to study the response of different hydrological processes to climate and to understand ecosystem carbon sink. However, little is known about the effects and mechanisms of precipitation and temperature on the WUE of different hydrological processes. Thus, three kinds of WUEs (GPP/E (eWUE), GPP/Et (tWUE), and GPP/P (pWUE)) are defined for three different hydrological indicators in semi-arid areas in this study in order to reveal the variation pattern of WUEs based on hydrological indicators and their response to climate. We found that in the past 15 years, the seasonal fluctuation of evapotranspiration in arid areas was large, and the spatial difference of WUE of different hydrological processes was obvious. In semi-arid areas, temperature had a significant effect on WUE (about 68–81%). However, precipitation had a lag effect on WUEs, and the negative impact of precipitation has a great influence (about 84–100%). Secondly, the threshold values of precipitation to WUEs (200 or 300 mm) and temperature to WUEs (2 or 7 °C) are also different from previous studies. This study advances our understanding of the influence of different hydrological processes on ecosystem carbon and climate.

scholarly journals Responses of Intrinsic Water-use Efficiency and Tree Growth to Climate Change in Semi-Arid Areas of North China

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
L. U. Weiwei ◽  
Y. U. Xinxiao ◽  
J. I. A. Guodong ◽  
L. I. Hanzhi ◽  
L. I. U. Ziqiang
Keyword(s):  
Climate Change ◽  
Water Use Efficiency ◽  
Water Use ◽  
Tree Growth ◽  
North China ◽  
Arid Areas ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Differences in instantaneous water use efficiency derived from post-carboxylation fractionation respond to the interaction of CO<sub>2</sub> concentrations and water stress in semi-arid areas

2016 ◽  
Author(s):  
Na Zhao ◽  
Ping Meng ◽  
Yabing He ◽  
Xinxiao Yu
Keyword(s):  
Water Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Environmental Changes ◽  
Co2 Concentration ◽  
Water Soluble ◽  
Severe Drought ◽  
Arid Areas ◽  
Use Efficiency ◽  
Semi Arid

Abstract. In the context of global warming attributable to the increasing levels of CO2, severe drought can be anticipated in areas with chronic water shortages (semi-arid areas), which necessitates research on the interaction between elevated atmospheric concentrations of CO2 and drought on plant photosynthetic discrimination. As δ13C of water-soluble compounds in leaves was depleted from extracellular CO2 to primary assimilates, no explanation has been offered for 13C fractionation before leaf-exported transportation of photosynthate. Either its variation according to the CO2 concentration and/or water stress gradients, or their interaction have not yet been identified. Therefore, saplings of species typical to a semi-arid area of Northern China that have similar growth status – Platycladus orientalis and Quercus variabilis – were selected and cultivated in growth chambers with orthogonal treatments (four CO2 concentrations [CO2] × five soil volumetric water contents (SWC)). The δ13C of water-soluble compounds extracted from leaves of potted saplings was measured to determine the instantaneous water use efficiency (WUEcp) after cultivation. Instantaneous water use efficiency derived from gas exchange (WUEge) was integrated to estimate differences in δ13C signal variation before leaf-exported translocation of primary assimilates. The WUEge of the two saplings both decreased with increased soil moisture, and increased with elevated [CO2] at 35 %–80 % of Field Capacity (FC) by strengthening photosynthetic capacity and reducing transpiration. Differences in instantaneous water use efficiency (iWUE) according to distinct environmental changes differed between the species. The WUEge of P. orientalis was significantly greater than that of Q. variabilis, while the opposite results were obtained in a comparison of the WUEcp of the two species. The differences between WUEge and WUEcp were clearly species-specific, as demonstrated in the interaction of [CO2] and SWC. Rising [CO2] coupled with moistened soil generated increasing disparities between WUEge and WUEcp in P. orientalis with an amplitude of 0.0328 ‰–0.0472 ‰. Further, the differences between WUEge and WUEcp of Q. variabilis increased as CO2 concentration increased and water stress alleviated (0.0384 ‰–0.0466 ‰). The 13C fractionation in post-photosynthesis was linearly dependent on gs, and was attributed to environmental variation. Thus, cautious descriptions of the magnitude and environmental dependence of apparent post-carboxylation fractionation are worth our attention in photosynthetic fractionation.

The influence of rotational tillage on soil water storage, water use efficiency and maize yield in semi-arid areas under varied rainfall conditions

2018 ◽  
Vol 203 ◽  
pp. 376-384 ◽  
Author(s):  
Shulan Wang ◽  
Hao Wang ◽  
Yuanhong Zhang ◽  
Rui Wang ◽  
Yujiao Zhang ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Water Storage ◽  
Maize Yield ◽  
Soil Water Storage ◽  
Arid Areas ◽  
Use Efficiency ◽  
Semi Arid

scholarly journals Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas

2017 ◽  
Vol 89 (4) ◽  
pp. 3015-3029 ◽  
Author(s):  
CLAUDIANA M. DOS SANTOS ◽  
LAURÍCIO ENDRES ◽  
VILMA M. FERREIRA ◽  
JOSÉ V. SILVA ◽  
EDUARDO V. ROLIM ◽  
...  
Keyword(s):  
Drought Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Photosynthetic Capacity ◽  
Ricinus Communis ◽  
Arid Areas ◽  
Ricinus Communis L ◽  
Use Efficiency ◽  
Semi Arid
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