PubAg

Main content area

You searched for: Subject "water use efficiency" Remove constraint Subject: "water use efficiency"
Start Over

Search

6,260  Search Results

« Previous | 1 - 20 of 6,260 |
Number of results to display per page

Search Results

1. Natural 13C and 15N abundance of moss-substrate systems on limestones and sandstones in a karst area of subtropical China

Author:
Dong, Yu-Ping; Huang, Hao; Song, Wei; Sun, Xin-Chao; Wang, Min; Zhang, Wei; Wang, Ke-Lin; Liu, Cong-Qiang; Liu, Xue-Yan
Source:
Catena 2019 v.180 pp. 8-15
ISSN:
0341-8162
Subject:
water use efficiency,   etc   ; carbon; ecosystems; karsts; mosses and liverworts; nitrogen; sandstone; stable isotopes; weathering; China;     Show all 10 Subjects
Abstract:
... Epilithic mosses (EM) and organic substrates (OS) constitute a special ecosystem developing on rocks and a critical interface regulating rock-atmosphere interactions and biological weathering. Carbon (C) and nitrogen (N) are critical elements influencing biotic-abiotic interactions in EM-OS systems. However, the dynamics of C and N in EM-OS systems and their differences among rock types remain unc ...
DOI:
10.1016/j.catena.2019.04.015

2. How should crop water-use efficiency be analyzed? A warning about spurious correlations

Author:
Gilbert, Matthew E.; Hernandez, M. Isabel
Source:
Field crops research 2019 v.235 pp. 59-67
ISSN:
0378-4290
Subject:
water use efficiency,   etc   ; data collection; evapotranspiration; grain yield; isogenic lines; prediction; statistical analysis; surveys; variance;     Show all 9 Subjects
Abstract:
... Water-use efficiency (WUE) is a common concept in the agronomy literature. Although definitions of WUE vary, the most common relates the ratio of grain yield (GY) to evapotranspiration (ET) e.g. WUEö=öGY/ET or WUEö=öET/GY. But using this metric has issues, as it is a ratio and is often analyzed relative to one of its components. Here it is shown that plotting WUE versus GY or ET causes spurious co ...
DOI:
10.1016/j.fcr.2019.02.017

3. A new approach for assessing natural patterns of flow variability and hydrological alterations: The case of the Spanish rivers

Author:
García de Jalón, Silvestre; González del Tánago, Marta; García de Jalón, Diego
Source:
Journal of environmental management 2019 v.233 pp. 200-210
ISSN:
0301-4797
Subject:
water use efficiency,   etc   ; anthropogenic activities; dams (hydrology); environmental impact; freshwater ecosystems; humans; hydrology; rivers; watersheds;     Show all 9 Subjects
Abstract:
... Ensuring water is available for human use usually requires dams and reservoirs that severely affect river ecosystems. Hydrological alteration by river damming represents one of the most prominent human impacts on freshwater ecosystems. This paper presents a methodological approach to assessing the natural patterns of flow variability and hydrological alterations in Mediterranean rivers. The method ...
DOI:
10.1016/j.jenvman.2018.12.049

4. Tradeoffs between growth rate and water-use efficiency in seedlings of native perennials but not invasive annuals

Author:
Valliere, Justin M.
Source:
Plant ecology 2019 v.220 no.3 pp. 361-369
ISSN:
1385-0237
Subject:
water use efficiency,   etc   ; annuals; ecosystems; indigenous species; invasive species; perennials; plant communities; plant establishment; seedlings; California;     Show all 10 Subjects
Abstract:
... Tradeoffs among species’ traits play an important role in shaping communities. These relationships may also mediate community response to environmental change. In plants of water-limited ecosystems, tradeoffs between growth and water use may impose an important physiological constraint within and across species. I investigated how functional traits associated with this tradeoff differ between seed ...
DOI:
10.1007/s11258-019-00919-y

5. Research idea to science for impact: Tracing the significant moments in an innovation based irrigation study

Author:
Srinivasan, M.S.; Jongmans, C.; Bewsell, D.; Elley, G.
Source:
Agricultural water management 2019 v.212 pp. 181-192
ISSN:
0378-3774
Subject:
water use efficiency,   etc   ; data collection; farmers; irrigation scheduling; irrigation water; outreach; researchers; stakeholders; New Zealand;     Show all 9 Subjects
Abstract:
... Uptake of irrigation scheduling tools by New Zealand (NZ) farmers has remained static for many years and some researchers consider the use of linear, tech-transfer approaches as the main reason for this. To understand the controls and drivers that influence the uptake of these tools and to evaluate the effectiveness of a co-innovation approach in improving their (tools) uptake, a team of biophysic ...
DOI:
10.1016/j.agwat.2018.08.045

6. State of Knowledge of Irrigation Techniques and Practicalities within Given Socio‐Economic Settings

Author:
Ding, Kunlun
Source:
Irrigation and drainage 2019 v.68 no.1 pp. 31-45
ISSN:
1531-0353
Subject:
water use efficiency,   etc   ; affordability; models; remote sensing; socioeconomics; surface irrigation; water shortages;     Show all 7 Subjects
Abstract:
... This paper is based on the General Report of Question 61 of the 23rd Congress of the International Commission on Irrigation and Drainage (ICID). The Question was entitled ‘State of Knowledge of Irrigation Techniques and Practicalities within Given Socio‐Economic Settings’, covering three sub‐questions: adopting precision irrigation and improving surface irrigation to combat water scarcity; using I ...
DOI:
10.1002/ird.2237

7. Drivers of virtual water flows on regional water scarcity in China

Author:
Cai, Beiming; Zhang, Wei; Hubacek, Klaus; Feng, Kuishuang; Li, ZhenLiang; Liu, Yawen; Liu, Yu
Source:
Journal of cleaner production 2019 v.207 pp. 1112-1122
ISSN:
0959-6526
Subject:
water use efficiency,   etc   ; chemical industry; electricity; exports; models; virtual water; water shortages; China;     Show all 8 Subjects
Abstract:
... Previous studies had shown that the virtual water flows had intensified local water scarcity of China. There is an urgent need to identify the drivers of virtual water flows and provide the potential options to reduce the impact of virtual water flows on regional water scarcity. Based on the multi-regional input-output model and structural decomposition analysis, we evaluated the redistribution of ...
DOI:
10.1016/j.jclepro.2018.10.077

8. Water footprints in Beijing, Tianjin and Hebei: A perspective from comparisons between urban and rural consumptions in different regions

Author:
Sun, Siao
Source:
The Science of the total environment 2019 v.647 pp. 507-515
ISSN:
0048-9697
Subject:
water use efficiency,   etc   ; accounting; issues and policy; temporal variation; urbanization; water footprint; China;     Show all 7 Subjects
Abstract:
... Examination of a region/country's water footprint and its underlying influencing factors is essential for enhancing understanding of water resource problems and challenges. This study addresses the influencing factors that lead to different consumption-based water footprints (WFs) per capita in different countries/regions, with emphasis on differentiating urban and rural WFs and examining the role ...
DOI:
10.1016/j.scitotenv.2018.07.343

9. Assessing China’s agricultural water use efficiency in a green-blue water perspective: A study based on data envelopment analysis

Author:
Geng, Qingling; Ren, Qingfu; Nolan, Rachael H.; Wu, Pute; Yu, Qiang
Source:
Ecological indicators 2019 v.96 pp. 329-335
ISSN:
1470-160X
Subject:
water use efficiency,   etc   ; environmental indicators; population growth; water management; water policy; water resources; China;     Show all 7 Subjects
Abstract:
... Uneven water resources and growing food demand due to an increasing population bring challenges to China. One important mechanism to address these challenges is to enhance water use efficiency (WUE). This requires information on current efficiencies in water use for agricultural production. In this study, we provide a benchmarking tool to assess relative agricultural WUE in 31 provinces in China d ...
DOI:
10.1016/j.ecolind.2018.09.011

10. Grain yield, evapotranspiration, and water-use efficiency of maize hybrids differing in drought tolerance

Author:
Hao, Baozhen; Xue, Qingwu; Marek, Thomas H.; Jessup, Kirk E.; Becker, Jacob D.; Hou, Xiaobo; Xu, Wenwei; Bynum, Edsel D.; Bean, Brent W.; Colaizzi, Paul D.; Howell, Terry A.
Source:
Irrigation science 2019 v.37 no.1 pp. 25-34
ISSN:
0342-7188
Subject:
water use efficiency,   etc   ; breathing; corn; drought tolerance; evapotranspiration; grain yield; hybrids; irrigation; plant density; planting;     Show all 10 Subjects
Abstract:
... Adoption of drought-tolerant (DT) hybrids is a viable strategy for maize production in drought-prone environments. We conducted four-year field studies (2011–2014) to investigate yield, crop evapotranspiration (ETc), and water-use efficiency (WUE) in one conventional (N58L) and one DT hybrid (N59B-DT) under three water regimes (I₁₀₀, I₇₅, and I₅₀, where the subscripts were the percentage of irriga ...
DOI:
10.1007/s00271-018-0597-5

11. Water for agriculture, irrigation management

Author:
Saccon, Pierpaolo
Source:
Applied soil ecology 2018 v.123 pp. 793-796
ISSN:
0929-1393
Subject:
water use efficiency,   etc   ; irrigation management; water requirement;     Show all 3 Subjects
Abstract:
... This chapter aims to illustrate some of the recent methodologies that can be employed for improving water use efficiency in agriculture by optimizing irrigation management based on crop water requirements. ...
DOI:
10.1016/j.apsoil.2017.10.037

12. A data-conditioned stochastic parameterization of temporal plant trait variability in an ecohydrological model and the potential for plasticity

Author:
Liu, Shaoqing; Ng, Gene-Hua Crystal
Source:
Agricultural and forest meteorology 2019 v.274 pp. 184-194
ISSN:
0168-1923
Subject:
water use efficiency,   etc   ; carbon; databases; ecological function; global change; leaf area; models; regression analysis; shrublands; soil water; temporal variation;     Show all 11 Subjects
Abstract:
... Recent studies have begun to incorporate spatially variable plant traits into ecohydrological models, but temporal trait variability remains under-studied. Because of its potential to influence ecosystem function, representing stress-induced temporal trait variability into models should be a research priority. We present a new data-model integration approach to identify temporal variability in pla ...
DOI:
10.1016/j.agrformet.2019.05.005

13. Can the informal groundwater markets improve water use efficiency and equity? Evidence from a semi-arid region of Pakistan

Author:
Razzaq, Amar; Qing, Ping; Naseer, Muhammad Asad ur Rehman; Abid, Muhammad; Anwar, Mumtaz; Javed, Iqbal
Source:
The Science of the total environment 2019 v.666 pp. 849-857
ISSN:
0048-9697
Subject:
water use efficiency,   etc   ; extension education; farmers; groundwater; income; irrigation; markets; semiarid zones; surveys; water shortages; wells; Pakistan;     Show all 12 Subjects
Abstract:
... Pakistani farmers are using groundwater at an increasing rate to supplement their irrigation needs. This practice has led to overexploitation of groundwater in the country, resulting in many negative externalities and increased resource costs. In response to the growing water shortage, the informal groundwater markets in the arid and semi-arid regions of Punjab have gradually emerged. These market ...
DOI:
10.1016/j.scitotenv.2019.02.266

14. Drought stress affects on growth, water use efficiency, gas exchange and chlorophyll fluorescence of Juglans rootstocks

Author:
Liu, Binghua; Liang, Jing; Tang, Guimin; Wang, Xiaofang; Liu, Fangchun; Zhao, Dengchao
Source:
Scientia horticulturae 2019 v.250 pp. 230-235
ISSN:
0304-4238
Subject:
water use efficiency,   etc   ; Juglans mandshurica; Juglans nigra; Juglans regia; chlorophyll; gas exchange; photosynthesis; rootstocks; seedlings; walnuts; water stress;     Show all 11 Subjects
Abstract:
... Seedlings of three selected Juglans rootstocks (Juglans mandshurica Maxim, Juglans nigra L. and Juglans regia L. cv. Jizhaomian) were analyzed in terms of growth, water use efficiency (WUE), chlorophyll fluorescence and photosynthetic response to drought stress. Significant differences among seedlings of the three analyzed Juglans rootstocks were observed on performance in response to water defici ...
DOI:
10.1016/j.scienta.2019.02.056

15. Assessing sustainability of agricultural water saving in an arid area with shallow groundwater

Author:
Xue, Jingyuan; Huo, Zailin; Huang, Quanzhong; Wang, Fengxin; Boll, Jan; Huang, Guanhua; Qu, Zhongyi
Source:
Irrigation and drainage 2019 v.68 no.2 pp. 205-217
ISSN:
1531-0353
Subject:
water use efficiency,   etc   ; case studies; financial economics; groundwater; irrigation; semiarid zones; social benefit; vegetation; water conservation; water shortages;     Show all 10 Subjects
Abstract:
... Agricultural water‐saving practices are important in order to cope with the increasing shortage of water resources in arid and semi‐arid areas. With water use efficiency and productivity being improved, however, more intense regional agricultural water‐saving practices may induce the reduction of vegetation coverage and also groundwater decline. We assess the sustainability of regional agricultura ...
DOI:
10.1002/ird.2295

16. A comprehensive analysis of regional grain production characteristics in China from the scale and efficiency perspectives

Author:
Yu, X.; Sun, J.X.; Sun, S.K.; Yang, F.; Lu, Y.J.; Wang, Y.B.; Wu, F.J.; Liu, P.
Source:
Journal of cleaner production 2019 v.212 pp. 610-621
ISSN:
0959-6526
Subject:
water use efficiency,   etc   ; autocorrelation; crop production; crops; food security; land resources; path analysis; planting; spatial variation; China;     Show all 10 Subjects
Abstract:
... Grain production in China is faced with problems including unbalanced regional distribution, mismatch of water and cultivated land resources, and low water use efficiency. Analysis of the characteristics of regional grain production can provide reference information for the optimization of grain planting layout in the region, improving resource utilization efficiency, and ensuring food security. T ...
DOI:
10.1016/j.jclepro.2018.12.063

17. Virtual water trade and water footprint accounting of Saffron production in Iran

Author:
Bazrafshan, Ommolbanin; Ramezani Etedali, Hadi; Gerkani Nezhad Moshizi, Zahra; Shamili, Mansoureh
Source:
Agricultural water management 2019 v.213 pp. 368-374
ISSN:
0378-3774
Subject:
water use efficiency,   etc   ; cultivation area; freshwater; greywater; issues and policy; saffron; trade; virtual water; water resources; Azerbaijan; Iran;     Show all 11 Subjects
Abstract:
... The virtual water concept has a considerable potential to help improve the productivity of limited fresh water resources especially in the agriculture sector. Iran is the biggest producer and exporter of Saffron in the world. This research explores the average magnitude and share of water footprint components, including the green, blue, grey and white water footprints over the period of 2008–2014 ...
DOI:
10.1016/j.agwat.2018.10.034

18. Diversity analysis of water sources, uses, and flows from source to use in the USA

Author:
Barakoti, Sonia; Celik, Ilke; Moorhead, Daryl; Apul, Defne
Source:
The Science of the total environment 2019 v.652 pp. 1409-1415
ISSN:
0048-9697
Subject:
water use efficiency,   etc   ; United States Geological Survey; climatic factors; engineering; infrastructure; risk reduction; water analysis; water flow; United States;     Show all 9 Subjects
Abstract:
... Diversifying a system can reduce risk from- and increase resilience to perturbation. For this reason, the concept of diversity has been used in many different fields but its use in analyzing engineering infrastructure has been limited. In particular, the diversity of water sources and uses and the diversity of how sources are connected to uses (flow) have never been analyzed. In addition, the rela ...
DOI:
10.1016/j.scitotenv.2018.10.335

19. Comprehensive evaluation and scenario simulation for the water resources carrying capacity in Xi'an city, China

Author:
Yang, Zhaoyang; Song, Jinxi; Cheng, Dandong; Xia, Jun; Li, Qi; Ahamad, Muhammad Irfan
Source:
Journal of environmental management 2019 v.230 pp. 221-233
ISSN:
0301-4797
Subject:
water use efficiency,   etc   ; carrying capacity; cities; issues and policy; models; quantitative analysis; recycling; socioeconomic development; wastewater; water supply; China;     Show all 11 Subjects
Abstract:
... The quantity and quality of water resources are of great importance in maintaining urban socio-economic development. Accordingly, substantial research has been conducted on the concept of the water resources carrying capacity (WRCC). In this study, analytic hierarchy process (AHP) and system dynamics (SD) models were combined to construct a multi-criteria evaluation system of the WRCC and a socio- ...
DOI:
10.1016/j.jenvman.2018.09.085

20. Effects of within-block canopy cover variability on water use efficiency of grapevines in the Sunraysia irrigation region, Australia

Author:
McClymont, L.; Goodwin, I.; Whitfield, D.M.; O’Connell, M.G.
Source:
Agricultural water management 2019 v.211 pp. 10-15
ISSN:
0378-3774
Subject:
water use efficiency,   etc   ; Vitis; aerial photography; canopy; crop coefficient; irrigation management; irrigation systems; models; vineyards; water requirement; water supply; Australia;     Show all 12 Subjects
Abstract:
... Irrigation methods commonly aim to match water supply to water requirement so that production outcomes are optimised. Grapevine water requirement estimates can be improved by adjusting crop coefficients for canopy cover (CC). Analysis of aerial images of 74 vineyard blocks revealed substantial ranges in CC between and within blocks. Within block variation compromises the ability to match water sup ...
DOI:
10.1016/j.agwat.2018.09.028