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Estimation of environmental effects of photovoltaic generation in North-west China

Mengjia REN, Anastasia SHCHERBAKOVA

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 535-543 doi: 10.1007/s11708-013-0280-8

Abstract: In estimating emissions reductions brought about by renewables in China, much of existing research assumesthis assumption is challenged and the potential environmental effects of photovoltaic (PV) power in North-westThe annual PV power generation in the North-west Grid is estimated, in this paper, to be as high as 17900emissions reduction at all if it displaces hydropower, which is often used to meet peak demand in the North-westGrid in China.

Keywords： photovoltaic (PV)     emission reduction     North-west China     marginal generator    

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NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WESTCHINA

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4, doi: 10.15302/J-FASE -2020355

Abstract: An experiment was conducted on a 3.9-ha maize seed production field in arid north-western China, managed

Keywords： boundary line analysis     irrigation method     precision agriculture     spatial variability     yield gaps     yield-limiting factors    

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Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 1,   Pages 55-64 doi: 10.15302/J-FASE-2016091

Abstract: film-mulching, field experiments including different irrigation and N treatments were conducted in arid north-westChina in 2013 and 2014.

Keywords： yield components     biomass partitioning     harvest index     irrigation     nitrogen     maize for seed production    

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Potential and economic viability of standalone hybrid systems for a rural community of Sokoto, North-west

O. D. OHIJEAGBON,Oluseyi. O AJAYI

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 145-159 doi: 10.1007/s11708-014-0304-z

Abstract: potential and economic viability of standalone hybrid systems for an off-grid rural community of Sokoto, North-west

Keywords： photovoltaic (PV) power     wind power     solar-wind hybrid     cost per kilowatt-hour     clean energy    

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NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WESTCHINA

Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU

Frontiers of Agricultural Science and Engineering   Pages 525-544 doi: 10.15302/J-FASE-2020355

Abstract: An experiment was conducted on a 3.9-ha maize seed production field in arid north-west China, managed

Keywords： boundary line analysis     irrigation method     precision agriculture     spatial variability     yield gaps     yield-limiting factors    

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models for runoff forecasting and crop planting structure optimization of the Shiyang River Basin, north-westChina

Fan ZHANG, Mo LI, Shanshan GUO, Chenglong ZHANG, Ping GUO

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 177-187 doi: 10.15302/J-FASE-2017177

Abstract: To improve the accuracy of runoff forecasting, an uncertain multiple linear regression (UMLR) model is presented in this study. The proposed model avoids the transfer of random error generated in the independent variable to the dependent variable, as this affects prediction accuracy. On this basis, an inexact two-stage stochastic programming (ITSP) model is used for crop planting structure optimization (CPSO) with the inputs that are interval flow values under different probabilities obtained from the UMLR model. The developed system, in which the UMLR model for runoff forecasting and the ITSP model for crop planting structure optimization are integrated, is applied to a real case study. The aim of the developed system is to optimize crops planting area with limited available water resources base on the downstream runoff forecasting in order to obtain the maximum system benefit in the future. The solution obtained can demonstrate the feasibility and suitability of the developed system, and help decision makers to identify reasonable crop planting structure under multiple uncertainties.

Keywords： crop planting structure optimization     inexact two-stage stochastic programming     runoff forecasting     Shiyang River Basin     uncertain multiple linear regression    

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irrigation frequency improves root growth and reduces unproductive water loss by apple trees in arid north-westChina

Shaoqing DU, Ling TONG, Shaozhong KANG, Fusheng LI, Taisheng DU, Sien LI, Risheng DING

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 188-196 doi: 10.15302/J-FASE-2017176

Abstract: Alternate partial root-zone irrigation (APRI) can improve water use efficiency in arid areas. However, the effectiveness and outcomes of different frequencies of APRI on water uptake capacity and physiological water use have not been reported. A two-year field experiment was conducted with two irrigation amounts (400 and 500 mm) and three irrigation methods (conventional irrigation, APRI with high and low frequencies). Root length density, stomatal conductance, photosynthetic rate, transpiration rate, leaf water use efficiency, midday stem and leaf water potentials were measured. The results show that in comparison with conventional irrigation, APRI with high frequency significantly increased root length density and decreased water potentials and stomatal conductance. No differences in the above indicators between the two APRI frequencies were detected. A significantly positive relationship between stomatal conductance and root length density was found under APRI. Overall, alternate partial root-zone irrigation with high frequency has a great potential to promote root growth, expand water uptake capacity and reduce unproductive water loss in the arid apple production area.

Keywords： alternate partial root-zone irrigation     apple tree     leaf water use efficiency     root length density     stomatal conductance     water potential    

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Allocation of Water Resources, Conservation and Upgrading of Eco-environment and Sustainable Development in North-westChina

Water-resources-in-northwest-region Task Group of Chinese Academy of Engineering

Strategic Study of Chinese Academy of Engineering 2003, Volume 5, Issue 4,   Pages 1-26

Abstract:

The northwestern region of China is a vast territory rich in resources and dwelt by many ethnic groupssecurity and national defense are concerned and is also an extremely important ecological buffer zone of China

Pursuant to the directives issued by the Central Government on “the development of China´s west” in harmony with that in ecology and environment, Chinese Academy of Engineering,

Keywords： northwestern China     allocation of water resources     conservation and upgrading of eco-environment     strategy    

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Introducing Sea Water from Bohai Sea to West China is a Basic Strategy Project for Developing West China

Chen Changli

Strategic Study of Chinese Academy of Engineering 2003, Volume 5, Issue 10,   Pages 14-19

Abstract:

It is a basic strategy project for developing west China to introduce sea water from Bohai Sea towest China, comparing to the project on introducing fresh-water from Yangtze River to north China.

Keywords： introducing sea water from Bohai Sea to west China     developing west China     sandstorm     groundwater    

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GROUNDWATER DEPLETION IN THE NORTH CHINA PLAIN: THE AGROHYDROLOGICAL PERSPECTIVE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 594-598 doi: 10.15302/J-FASE -2021407

Abstract:

Agricultural production in the North China Plain with rainfall of less than 500 mm·yr&

Keywords： crop yield / groundwater depletion / sustainability    

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NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTHCHINA PLAIN

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,

Abstract:

 

The proportion of industrial livestock in China has increased over the past 30nutrient flows, nutrient use efficiency, and nutrient losses in different livestock systems in the NorthChina Plain based on the NUFER-farm model.

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Introducing Sea Water from Bohai Sea to West China And Controlling Desert and Sandstorm

Chen Changli

Strategic Study of Chinese Academy of Engineering 2001, Volume 3, Issue 10,   Pages 13-21

Abstract:

An advanced way for controlling desert and sandstorm to protect, recover and expand wetland in northand northwest China is proposed in this paper.A scheme of project is envisaged, which introduces sea water from Bohai Sea through north Inner MengoliaThe target of the project is to recover and expand wetland in northwest China.

Keywords： introducing sea water from Bohai sea to west China     sandstorm     wetland     vapour exchange system    

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The Rise of Philosophy of Engineering in the East and West

Li Bocong

Strategic Study of Chinese Academy of Engineering 2008, Volume 10, Issue 3,   Pages 13-16

Abstract: text-align: justify;">Philosophy of science and philosophy of technology were both established in the Westfirst,however philosophy of engineering rises in the West and the ones in the East simultaneously.This paper outlines the important events occurred and books published in China and those in the Westa brief comparison between predominant characteristics in the field of philosophy of engineering in Chinaand those in the West.

Keywords： engineering     philosophy of engineering     China     the West    

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TRADE-OFFS IN THE DESIGN OF SUSTAINABLE CROPPING SYSTEMS AT A REGIONAL LEVEL: A CASE STUDY ON THE NORTHCHINA PLAIN

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 2,   Pages 295-308 doi: 10.15302/J-FASE-2021434

Abstract: The paper presents a model-based analysis of how 30 different crop rotations practiced in the North China

Keywords： crop rotation / food security / multi-objective optimization / water use    

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Modeling radiative effects of haze on summer-time convective precipitation over North China: a case study

Xuying WANG, Bin ZHANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0840-3

Abstract: We modeled the impact of haze radiative effects on precipitation in North China.The impact of haze radiative effect on summertime 24-h convective precipitation over North China wasimportant factor that determined whether precipitation was enhanced or suppressed during summertime over NorthChina.

Keywords： Haze     Aerosol radiative effects     Convective precipitation    

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Title Author Date Type Operation

Estimation of environmental effects of photovoltaic generation in North-west China

Mengjia REN, Anastasia SHCHERBAKOVA

Journal Article

NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WESTCHINA

Journal Article

Effects of irrigation and nitrogen management on hybrid maize seed production in north-west China

Hui RAN,Shaozhong KANG,Fusheng LI,Ling TONG,Taisheng DU

Journal Article

Potential and economic viability of standalone hybrid systems for a rural community of Sokoto, North-west

O. D. OHIJEAGBON,Oluseyi. O AJAYI

Journal Article

NITROGEN MANAGEMENT: THREE MAJOR PRACTICES IN CLOSING YIELD GAPS FOR AGRICULTURAL SUSTAINABILITY IN NORTH-WESTCHINA

Xiuwei GUO, Manoj Kumar SHUKLA, Di WU, Shichao CHEN, Donghao LI, Taisheng DU

Journal Article

models for runoff forecasting and crop planting structure optimization of the Shiyang River Basin, north-westChina

Fan ZHANG, Mo LI, Shanshan GUO, Chenglong ZHANG, Ping GUO

Journal Article

irrigation frequency improves root growth and reduces unproductive water loss by apple trees in arid north-westChina

Shaoqing DU, Ling TONG, Shaozhong KANG, Fusheng LI, Taisheng DU, Sien LI, Risheng DING

Journal Article

Allocation of Water Resources, Conservation and Upgrading of Eco-environment and Sustainable Development in North-westChina

Water-resources-in-northwest-region Task Group of Chinese Academy of Engineering

Journal Article

Introducing Sea Water from Bohai Sea to West China is a Basic Strategy Project for Developing West China

Chen Changli

Journal Article

GROUNDWATER DEPLETION IN THE NORTH CHINA PLAIN: THE AGROHYDROLOGICAL PERSPECTIVE

Journal Article

NUTRIENT USE EFFICIENCY AND LOSSES OF INDUSTRIAL FARMS AND MIXED SMALLHOLDINGS: LESSONS FROM THE NORTHCHINA PLAIN

Journal Article

Introducing Sea Water from Bohai Sea to West China And Controlling Desert and Sandstorm

Chen Changli

Journal Article

The Rise of Philosophy of Engineering in the East and West

Li Bocong

Journal Article

TRADE-OFFS IN THE DESIGN OF SUSTAINABLE CROPPING SYSTEMS AT A REGIONAL LEVEL: A CASE STUDY ON THE NORTHCHINA PLAIN

Journal Article

Modeling radiative effects of haze on summer-time convective precipitation over North China: a case study

Xuying WANG, Bin ZHANG

Journal Article