Author
Wen Zeng
Bio: Wen Zeng is an academic researcher from Hohai University. The author has contributed to research in topics: Water use & Water resources. The author has an hindex of 3, co-authored 4 publications receiving 44 citations.
Papers
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TL;DR: Wang et al. as discussed by the authors constructed a hybrid framework for agricultural water utilization and efficiency evaluation, combining the water footprint and agricultural water use paradigms and enveloping water resource movement and its impact on the environment in the agricultural production process.
56 citations
TL;DR: Based on modified water footprint (WF) calculations for corn cultivation in China, WUE indices of water productivity (WP) and water efficiency (WE) for production capacity and the effective ratio of water resources were developed and quantified in the current study as mentioned in this paper.
Abstract: Water use efficiency (WUE) improvements in agricultural production are of great significance to regional food security and ecological sustainability. Based on modified water footprint (WF) calculations for corn cultivation in China, WUE indices of water productivity (WP) and water efficiency (WE) for production capacity and the effective ratio of water resources were developed and quantified in the current study. Approaches to achieving national productive and effective improvements concurrently were sought by determining the spatial-temporal patterns and determinants of WP and WE during 1996–2015. The results show that the annual crop WF was estimated at 197.3 m³, including 14.1 % blue, 62.4 % green and 23.4 % gray components. WP and WE were calculated as 0.781 kg/m³ and 0.687, respectively, both of which increased over time in all subregions. Both WP and WE showed obvious spatial differences in the observed period. Low-value provinces were concentrated in the northwest and on the Huang-Huai-Hai Plain, and most high-value regions were distributed in the southeastern coastal zone. Agricultural production technology improvements contributed to WF reductions in specific areas, while meteorological elements and planting structure were the main factors affecting the spatial distribution of WP and WE. WF suppression in northwestern China and expansion of the production scale in southern China were conducive to increasing productive and effective agricultural water resource use in corn cultivation nationally. Agricultural production technology progress and crop spatial arrangement optimization are equally important to agricultural WUE enhancement in the WF framework.
24 citations
TL;DR: In this paper, the authors examined water resource efficiency (WRE) and the effects of effective crop water use from the perspective of the water footprint, defined as the ratio of consumptive field water use (CWU) to the total crop water footprint (CWF), including the blue water footprint applied (BWFA), green Water footprint (GWF), and grey water footprint(GYWF).
23 citations
TL;DR: It was determined that theGWFw used in previous studies may have greatly underestimated the adverse impact of the GWF on water quality, particularly in humid regions or years, and it is essential to identify the formation mechanism and appropriately select the time steps for GWF evaluation during rice production.
12 citations
TL;DR: The arid North China Plain should adopt water-saving irrigation and rainwater recycling technologies to control WRU, and the Northeast granary should reduce WRU by strengthening water pollution prevention and improving water resources scheduling to ensure food security and sustainable use of water resources.
1 citations
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TL;DR: Wang et al. as discussed by the authors constructed two different data envelopment analysis models combined with green Luenberger productivity indicator (GLPI) to measure China's AGTFP as well as check the robustness.
53 citations
TL;DR: In this article, the authors summarized the concept, quantitative method of yield gap, yield-limiting factors, and resource utilization efficiency of the three major food crops (wheat, maize and rice).
33 citations
TL;DR: In this article, the authors investigated the impacts of the WPI components (i.e., resource, capacity, access, use, and environment) on the Human Development Index (HDI) in Iran.
27 citations
TL;DR: Wang et al. as mentioned in this paper constructed an evaluation system of the efficiency and resilience of agricultural water resources system (EAWRS, RAWRS) by comprehensively applying the analytic hierarchy process (AHP), entropy method (EVM), SBM-DEA model, and the development coordination model.
26 citations
TL;DR: A spatiotemporal overview of agricultural water use in China provides a direction for improving irrigation water coefficient, which showed that the national irrigation water use coefficient had increased from 0.501 in 2010 to 0.542 in 2016.
26 citations