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Design of Machine Learning Based Smart Irrigation System for Precision Agriculture

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Computers, Materials & Continua 2022年第7期72卷 109-124页

作者： Khalil Ibrahim Mohammad Abuzanouneh Fahd N.Al-Wesabi Amani Abdulrahman Albraikan Mesfer Al Duhayyim M.Al-Shabi Anwer Mustafa Hilal Manar Ahmed Hamza Abu Sarwar Zamani K.Muthulakshmi Department of Information Technology College of ComputerQassim UniversityAl-Bukairiyah52571Saudi Arabia Department of Computer Science King Khalid UniversityMuhayel Aseer62529Saudi Arabia&Faculty of Computer and ITSana’a UniversitySana’a61101Yemen Department of Computer Science College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11564Saudi Arabia Department of natural and Applied Sciences College of Community-AflajPrince Sattam bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia Department of management Information System College of Business and AdministrativeTaibah UniversityMedina42353Saudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia Department of Electronics and Communication Engineering Dr.N.G.P Institute of TechnologyCoimbatore641048India

Agriculture 4.0,as the future of farming technology,comprises numerous key enabling technologies towards sustainable *** use of state-of-the-art technologies,such as the Internet of Things,transform traditional cultivation practices,like irrigation,to modern solutions of precision *** achieve effectivewater resource usage and automated irrigation in precision agriculture,recent technologies like machine learning(ML)can be *** this motivation,this paper design an IoT andML enabled smart irrigation system(IoTML-SIS)for precision *** proposed IoTML-SIS technique allows to sense the parameters of the farmland and make appropriate decisions for *** proposed IoTML-SIS model involves different IoT based sensors for soil moisture,humidity,temperature sensor,and ***,the sensed data are transmitted to the cloud server for processing and decision ***,artificial algae algorithm(AAA)with least squares-support vector machine(LS-SVM)model is employed for the classification process to determine the need for ***,the AAA is applied to optimally tune the parameters involved in the LS-SVM model,and thereby the classification efficiency is significantly *** performance validation of the proposed IoTML-SIS technique ensured better performance over the compared methods with the maximum accuracy of 0.975.

关键词： Automatic irrigation precision agriculture smart farming machine learning cloud computing decision making internet of things

Silvicultural Systems for Restoration of Mahogany in Degraded Landscapes in Africa: Influence of Mixed Rainforest Plantation on Growth and Pest Damage

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Open Journal of Forestry 2014年第4期4卷 414-425页

作者： Emmanuel Opuni-Frimpong Nana Yaa Nyarko-Duah Ebenezer J. D. Belford Andrew J. Storer faculty of Biosciences Kwame Nkrumah University of Science and Technology Kumasi Ghana Forestry Research Institute of Ghana Kumasi Ghana School of Forest resources and Environmental Science Michigan Technological University Townsend USA

African mahogany, one of the world’s most valuable timber species is threatened by over-exploitation in natural forests and failure of plantations due to attacks by the shoot borer Hypsipyla robusta. Mixed-species plantations has been reported to be an effective component of integrated pest management of major pest in other crops;but there is very limited empirical data on its use for managing Hypsipyla in mahogany mixed stands in West Africa. The aim of this study was to assess the effect of mixed-species stands as management intervention, on the growth of Khaya grandifoliola and Khaya ivorensis in relation to Hypsipyla robusta attack in a 10 ha experimental plantation in the wet evergreen forest type in Ghana. Khaya grandifoliola recorded faster growth than Khaya ivorensis in this forest type though the later naturally grow in this forest type while the former is introduced from the dry forest. Two years after planting, diameter and height growth were greater in the mixed-species stand than the pure stands for K. grandifoliola and K. ivorensis. Hypsipyla damage was less in the mixed stands of both K. grandifoliola and K. ivorensis compared to the pure stands, with the 20% and 10% Khaya mixed stand recording the lowest attack in both species. It can be recommended that mixed stands of the two Khaya species at 20% or lower Khaya density might be ideal for reducing the levels of Hypsipyla attack in this type of forest.

关键词： African Mahogany Hypsipyla robusta Mixed Plantation Planting Density Khaya Species

Restoring soil health to reduce irrigation demand and buffer the impacts of drought

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Frontiers of agricultural Science and Engineering 2020年第3期7卷 339-346页

作者： Rebecca SCHNEIDER Stephen MORREALE Zhigang LI Erin MENZIES PLUER Kirsten KURTZ Xilu NI Cuiping WANG Changxiao LI Harold VAN ES Department of natural resources Cornell UniversityIthacaNY14853USA School of Agriculture Ningxia UniversityYinchuan 750021China Modeling and Spatial Analysis Lab Department of Geography and Environmental ManagementUniversity of WaterlooWaterlooN2L 3G1Canada Cornell Soil Health Laboratory Cornell UniversityIthacaNY14853USA Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of North-western China Ningxia UniversityYinchuan 750021China State Key Laboratory of the Seedling Bioengineering Ningxia Forestry InstituteYinchuan 750004China Collge of Life Sciences Southwest UniversityChongqing 400715China Department Soil and Crop Sciences Cornell UniversityIthacaNY14853USA

Irrigation consumes three quarters of globalwater withdrawals each year. Strategies are needed toreduce irrigationwater use, including increasingtheefficiency of transfer methods and field *** restoration of soil health, specificallythrough organic matter amendments, can substantiallyreduce irrigation demand and increase crop yield. Aprogram to restore severely degraded and desertified soilsby incorporating coarse woodchips into the soil success-fully increased rainfall capture and elevated soil moisturefor several weeks between rainfall events at both Ningxia,north-west China and North Dakota, USA. With additionof fertilizer, woodchip incorporation further increasedgrowth of wheat and alfalfa. Comprehensive soil healthassessment of remnant grasslands was used to developtarget reference soil profiles by which to guide restorationefforts. Given that most agricultural soils are degraded tosome degree, soil health restoration can provide a powerfulstrategy toward achieving global food and water security.

关键词： drought irrigation restoration soil health woodchips

Research advances in multi-field coupling model for geothermal reservoir heat extraction

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能源评论(英文) 2022年第2期1卷 20-37页

作者： Gensheng Li Jiayan Ji Xianzhi Song Yu Shi Shuang Li Zihao Song Guofeng Song Fuqiang Xu State Key Laboratory of Petroleum resources and Prospecting China University of Petroleum(Beijing)Beijing102249China faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu611756China

As a kind of clean renewable energy,the production and utilization of geothermal resources can make a great contribution to optimizing the energy structure and energy conservation and emission *** circulating heat extraction process of working fluid will disturb the equilibrium state of physical and chemical fields inside the reservoir,and involve the mutual coupling of heat transfer,flow,stress,and chemical *** the coupling mechanism of flow and heat transfer inside the reservoir during geothermal exploitation can provide important theoretical support for the efficient exploitation of geothermal *** paper reviews the research advances of the multi-field coupling model in the reservoir during geothermal production over the past 40 *** thrust of this paper is on objective analysis and evaluation of the importance of each coupling process and its influence on reservoir heat extraction ***,we discuss the existing challenges and perspectives to promote the future development of the geothermal reservoir multi-field coupling *** accurate understanding of the multi-field coupling mechanism,an efficient cross-scale modeling method,as well as the accurate characterization of reservoir fracture morphology,are crucial for the multi-field coupling model of geothermal production.

关键词： Coupled THMC process Heat extraction Geothermal reservoir Operating parameters Numerical codes Geothermal energy

Effects of Enclosure on Plant and Soil Nutrients in Different Types of Alpine Grassland

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Journal of resources and Ecology 2020年第3期11卷 290-297页

作者： WANG Fang HE Yongtao FU Gang NIU Ben ZHANG Haorui LI Meng WANG Zhipeng WANG Xiangtao ZHANG Xianzhou Lhasa Plateau Ecosystem Research Station Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China College of resources and Environment University of Chinese Academy of SciencesBeijing 100190China

Enclosure is one of the most widely used management tools for degraded alpine grassland on the northern Tibetan Plateau, but the responses of different types of grassland to enclosure may vary, and research on these responses can provide a scientific basis for improving ecological conservation. This study took one site for each of three grassland types(alpine meadow, alpine steppe and alpine desert) on the northern Tibetan Plateau as examples, and explored the effects of enclosure on plant and soil nutrients by comparing differences in plant community biomass, leaf-soil nutrient content and their stoichiometry between samples from inside and outside the fence. The results showed that enclosure can significantly increase all aboveground biomass in these three grassland types, but it only increased the 10–20 cm underground biomass in the alpine desert. Enclosure also significantly increased the leaf nutrient content of the dominant plants and contents of total nitrogen(N), total potassium(K), and organic carbon(C) in 10–20 cm soil in alpine desert, thus changing the stoichiometry between C, N and P(phosphorus). However, enclosure significantly increased only the N content of dominant plant leaves in alpine steppe, while other nutrients and stoichiometries of both plant leaves and soil did not show significant differences in alpine meadow and alpine steppe. These results suggested that enclosure has differential effects on these three types of alpine grasslands on the northern Tibetan Plateau, and the alpine desert showed the most active ecological conservation in the responses of its soil and plant nutrients.

关键词： enclosure alpine meadow alpine steppe alpine desert steppe plant nutrient soil nutrient

全球重要农业文化遗产——中国浙江青田稻鱼共生系统项目实施框架

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资源科学 2009年第1期31卷 10-20页

作者：闵庆文孙业红 Frank van Schoubroeck 梁洛辉 Mary Jane Dela Cruz 中国科学院地理科学与资源研究所北京100101 中国科学院研究生院北京100049 Wageningen International 6700 AB WageningenThe Netherlands Environment and Sustainable Development Programme United Nations University53-70 Jingumae Shibuya-kuTokyo 150-8925Japan Land and Water Division Natural Resources and Environment Management DepartmentFAORomeItaly

水稻是世界上最主要的农作物之一。长期以来,亚洲许多地方一直有在稻田中养鱼(并作或连作)的传统。据历史记录和考古研究成果,中国稻田养鱼的历史可以追溯到2000多年以前。稻鱼共生系统不仅是一种独特的生产方式,而且还是一种具有丰富... 详细信息

水稻是世界上最主要的农作物之一。长期以来,亚洲许多地方一直有在稻田中养鱼(并作或连作)的传统。据历史记录和考古研究成果,中国稻田养鱼的历史可以追溯到2000多年以前。稻鱼共生系统不仅是一种独特的生产方式,而且还是一种具有丰富内涵的传统文化。稻鱼共生系统可以提供多种产品和服务功能:保障粮食安全,提高营养水平,增加农民收入,防止疟疾传染,生物多样性保护,病虫害控制,促进授粉过程,促进碳氮循环,水土保持,以及文化传承和休憩等。但是,正像其他许多传统农业技术一样,由于受到快速经济增长、城市化和现代农业技术的影响,稻鱼共生系统也面临着严峻威胁。中国是联合国首批农业文化遗产保护试点国家之一,浙江省青田县龙现村的传统稻鱼共生系统被列为首批试点之一,其目的就是开发出一种农业文化遗产"动态保护和适应性管理"的方法论并进行推广。本文是按照粮农组织要求所编制的项目实施的国家框架,在全面分析中国,特别是青田稻鱼共生系统发展历史和基本特征的基础上,确定了项目实施的总体目标和具体目标。根据项目的总体要求和稻鱼共生系统在我国的发展前景,预期的主要成果包括:建立国家农业文化遗产认定标准体系,确定国家农业文化遗产名录,并作为推荐为全球重要农业文化遗产的基础;促进将全球重要农业文化遗产中具有重要意义的农业生物多样性的保护和适应性管理纳入国家有关部门的保护和发展规划与政策中;通过对社区广泛参与,促进试点地方的具有全球意义的农业生物多样性得到可持续的利用与保护,并通过采取适当的技术和政策手段促进传统农业系统生态过程与文化过程的发展;将试点所得到的经验向更大范围进行推广,建立国家农业文化遗产保护网络,促进全球农业文化遗产网络的建立。此外,还介绍了为达到这些目标所应采取的措施和开展的具体活动,提出了促进机制建设、资金支持、社会发展、生态保护的可持续性途径,给出了促进项目实施的具体执行框架和各利益相关方的责任与义务。

关键词：稻鱼共生系统全球重要农业文化遗产传统生态农业浙江省青田县龙现村

Impact of Internal Factors on Information Technology Adoption: An Empirical Investigation of Chinese Firms

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Tsinghua Science and Technology 2008年第3期13卷 318-322页

作者：吴春明赵晶夏靓朱镇 Center for International Cooperation in E-Business College of ManagementChina University of Geosciences Graduate School China University of Geosciences

Organizations differ significantly in their inclination to deploy information technology （IT）. The factors that determine the organizational inclination to deploy IT need to be classified to help firms formulate an appropriate e-strategy. This paper discusses a framework that explains the influence of internal factors on IT adoption. The framework is based on quantitative data on IT adoption from 95 firms in China. The results highlight that the internal factors of leadership, organizational learning, and IT resources positively impact IT adoption. The study also shows that these factors are correlated.

关键词： information technology (IT) adoption leadership internal factors empirical study

Evolution characters of water exchange abilities between Dongting Lake and Yangtze River

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Journal of Geographical Sciences 2014年第4期24卷 731-745页

作者： OU Chaomin LI Jingbao ZHOU Yongqiang CHENG Weiyan YANG Yan ZHAO Zhonghua College of Information System and management National University of Defense Technology Changsha 410073 China College of resources and Environmental Sciences Hunan Normal University Changsha 410081 China Nanjing Institute of Geography and Limnology CAS Nanjing 210008 China University of Chinese Academy of Sciences Beijing 100049 China

By using field-survey hydrological data of the related control stations in Dongting Lake and the Yangtze River mainstream in 1951-2010, the evolution characters of water exchange abilities between the two. water bodies and their response to the operation of the Three Gorges Reservoir （TGR） from different time scales are analyzed based on their hydraulic relations. The results are shown as follows. Firstly, during July-September, the replenishment ability of Three Outlets to Dongting Lake is stronger, and in January-March, the replenishment ability of Dongting Lake to Yangtze River is stronger. Secondly, there has been an obvious inter-decadal wave on the water exchange coefficient between Dongting Lake and Yangtze River. In 1951-1958 and 1959-1968, the replenishment ability of Three Outlets to Dongting Lake was stronger, but in 2003-2010, the replenishment ability of Dongting Lake to Yangtze River has been strengthened. Thirdly, the spill-division ability of Three Outlets weakens, and the water of Dongting Lake coming from Three Outlets decreases either in typical years or under different dispatching modes of the TGR after the operation of the Three Gorges Reservoir. Furthermore, the water of Dongting Lake coming from Four Rivers takes the dominant position, which obviously enhances the replenishment ability of Dongting Lake to Yangtze River. Fourthly, if the effect of the runoff fluctuation in the basin is not considered, the evolution characters of the exchange capacities and the exchange process between Dongting Lake and Yangtze River in different time scales are generally changed with the variation of the water exchange amount between them, although the factors influencing the water exchange capacities between them is very complex. These show that there is an in-line growth or decline relation between the river-lake water exchange ability and the river-lake water exchange amount.

关键词： water exchange coefficient evolution of water exchange function Dongting Lake Yangtze River

Low-temperature oxidation behavior and mechanism of semi-dry desulfurization ash from iron ore sintering flue gas

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Journal of Iron and Steel Research International 2021年第9期28卷 1075-1081页

作者： Yi-fan Wang Yu-dong Zhang Hong-ming Long Li-xin Qian Yun-fei Luo Ru-fei Wei School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243032AnhuiChina Key Laboratory of Metallurgical Emission Reduction and resources Recycling(Anhui University of Technology) Ministry of EducationMa'anshan 243002AnhuiChina

The low-temperature wet oxidation behavior of semi-dry desulfurization ash from iron ore sintering flue gas in ammonium citrate solution was investigated for efficiently utilizing the low-quality desulfurization ash. The effects of the ammonium citrate concentration, oxidation temperature, solid/liquid ratio, and oxidation time on the wet oxidation behavior of desulfurization ash were studied. Simultaneously, the oxidation mechanism of desulfurization ash was revealed by means of X-ray diffraction, Zeta electric resistance, and X-ray photoelectron spectroscopy (XPS) analysis. Under the optimal conditions with ammonium citrate, the oxidation ratio of CaSO_(3) was up to the maximum value (98.49%), while that of CaSO_(3) was only 8.92% without ammonium citrate. Zeta electric resistance and XPS results indicate that the dissolution process of CaSO_(3) could be significantly promoted by complexation derived from the ammonium citrate hydrolysis. As a result, the oxidation process of CaSO_(3) was transformed from particle oxidation to SO_(3)^(2−) ion oxidation, realizing the rapid transformation of desulfurization ash from CaSO_(3) to CaSO_(4) at low temperature. It provides a reference for the application of semi-dry desulfurization ash and contributes to sustainable management for semi-dry desulfurization ash.

关键词： Semi-dry desulfurization ash Ammonium citrate Calcium sulfite Calcium sulfate Wet oxidation Sintering flue gas Low-temperature oxidation