Search Results - Jing Feng

This paper studied the effects of crop insurance on agricultural output with an economic growth model. Based on Ramsey-Cass-Koopmans (RCK) model, a basic model of agriculture economic growth was developed. Extending the basic model to incorporate uncertainty and insurance mechanism, a risk model and...

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The potential land productivity of study area was calculated with geographical information system (GIS), database including weather, hydrology and soil data based on previous research of other experts. Mechanism methodology was used to calculate potential land productivity, and its spatial distribut...

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Characteristics of vegetation cover change in northern Zhejiang Province was detected using MODIS NDVI time series. Discrete Fourier transform (DFT) method was applied to deduct the noisy and abnormal points. Districting map was got from land use map, in order to find out the vegetation cover charac...

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In order to improve the extraction precision of rice planting area, multitemporary remote sensing images chosen based on the growth stages of rice were performed atmospheric correction and geometric rectification. The fusion algorithms which are used to select the optimal bands combination include s...

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This article mainly illustrated the application of soil erosion estimation method based on Geographic Information System (GIS) and remote sensing (RS) technology. Based on this two technology, the research made use of the Revised Universal Soil Loss Equation (RUSLE) to analyze the factors affecting...

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ObjectivesTo comparatively assess the disease burden attributable to ambient particulate matter (APM) and household air pollution (HAP) across the ten most populous countries between 1990 and 2021.MethodsData on disability-adjusted life years (DALYs) and age-standardized DALY rates (ASDRs) attributa...

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Multi-temporal MODIS images were selected to acquiring paddy rice coverage exactly according to the different paddy rice growth stages, including the flooding and transplanting period, growing period, maturation period, and the fallow period after harvest. A mapping algorithm using time series of th...

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Based on “On construction of agricultural information system engineering”, the discipline bases of agricultural information engineering system included science background, technology background and application background were discussed in detail. The agricultural information science was defined and...

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Plant MYB transcription factors (TFs) play crucial roles in regulating the biosynthesis of flavonoids but current analysis on their role in Zanthoxylum bungeanum Maxim. (ZBM) is far from comprehensive. In this study, we identified 270 MYB genes in ZBM and divided them into four subfamilies. The R2R3...

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The normalized difference vegetation index (NDVI) has proven to be typically employed to assess terrestrial vegetation conditions. However, one limitation of NDVI for drought monitoring is the apparent time lag between rainfall deficit and NDVI response. To better understand this relationship, time...

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In terms of the single-phase flyback photovoltaic micro-inverters, the traditional discontinuous current mode algorithm takes the disadvantages of large phase delay between the grid-connected current and voltage, and high harmonics of grid-connected current. Therefore, this paper proposes a grid-...

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Because of the sparse distribution of meteorological stations, the duration of single time series of meteorological data acquisition in the meteorological temporal stations is usually relatively short. So these time series in meteorological temporal stations is sometimes prolonged to meet the needs...

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Long non-coding RNAs (lncRNAs) have been identified as critical players in tumorigenesis. Previous studies revealed that lncRNA SBF2-AS1 was involved in tumor progression. However, the role and underlying mechanism of SBF2-AS1 in cervical cancer (CC) remain unknown. In the present study, our data sh...

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It was pointed out in this paper that accurate geometric correction is the presupposition of rice growth monitoring and yield estimation using NOAA/AVHRR data at province level, therefore it is necessary to select an accurate geometric correction method which should be easy to use for non-profession...

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Temperature significantly influences the growth and development of edible mushrooms, including the popular Auricularia heimuer. Despite its economic importance, the molecular mechanisms that enable A. heimuer to withstand prolonged temperature stress are poorly characterized. Here, we performed a co...

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Land use, topography, administration, communication and geological disasters maps with a scale of 1∶50000, combined with population and economy data, were used in the quantitative analysis of spatial distribution characteristics of villages and towns in Xianju County by GIS. The results were used to...

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BackgroundLung cancer is a leading cause of cancer-related deaths around the world, but its impact on young and middle-aged individuals (aged 15–45 years) is less understood. The aim of this study was to assess the global burden of lung cancer in those aged 15–45 years during 1990–2021.MethodsThis s...

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MODIS NDVI data and time series matching method were used to extract the area of cultivated land with similar phenology. Time series of sample pixels from cultivated land were selected as standard time series spectrum, and the others were treated as testing time series spectrum to fix cultivated lan...

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The chlorophyll content and corresponding spectra data were analyzed and new chlorophyll index was constructed to improve the prediction power of chlorophyll content in rice. A rigorous search procedure was used to determine the best narrow band index predictors of rice chlorophyll. In the procedure...

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