Yuanshu Jing

Nanjing University of Information Science & Technology · Lab of Meteorology, Environment RS , Disaster RR

Most previous studies on the acute health effects of ozone are limited to urban areas, largely due to the paucity of air pollutant measurements in rural areas. We here estimated the county-specific daily maximum 8-h average ozone concentration in Jiangsu Province, China during 2015–2018, using a recently developed spatiotemporal machine learning mo...

The study aimed at using Moderate Resolution Imaging Spectroradiometer (MODIS-Terra) to investigate long-term spatial and temporal aerosol variations over Zambia during 2000–2020. Based on data availability, ground truthing for MODIS-Terra was done over Mongu in western Zambia using Aerosol Robotic Network (AERONET) data for 2001–2009. The correlat...

Drought is one of the most complex natural phenomena affecting the life and livelihood of people, especially in the current time of human-induced climate change. This research employs ground-based observations to assess the recent spatiotemporal characteristics of meteorological drought events over Rwanda. The drought is examined based on the Stand...

Purpose of review As a priority environmental pollutant, toxic trace metals enriched in atmospheric particulate matters (PMs) pose potential threats to both ecological system and human health. To sufficiently clarify the relationships between airborne trace metals and environmental impacts, considering the chemical speciation and bioaccessibility o...

BACKGROUND AND AIM: Ambient ozone pollution has been worsening in China. However, current understanding on the acute health effects of ozone is limited to urban areas, partly due to the paucity of air pollutant measurements in rural areas. We here applied modeled ambient ozone exposure covering both rural and urban areas to evaluate the association...

In this study, monthly S2S reforecast for 20 years obtained from the European Centre for Medium-Range Weather Forecast (ECMWF) were evaluated against the in-situ data. The spatial results show that the two datasets agree with the rainfall pattern throughout the year. The S2S ECMWF realistically simulates the mean annual cycle skillfully by identify...

This study examines long-term spatial and temporal trends of drought characteristics based on the Standardized Precipitation Index at three different time scales (3, 6, and 12 months) over Zambia from 1981 to 2017. Drought characteristic conditions such as duration, severity, and intensity at monthly, seasonal, and annual levels were analyzed to in...

Objectives: The paper aims to analyze the relationship between the seasonal and annual changes of respiratory mortality and meteorological conditions in Nanjing area. Also, the application of principal component analysis will be explored in the prediction of respiratory system diseases. Methods: The daily death toll and meteorological data of respi...

It is very important to evaluate the climate dryness by studying its temporal and spatial characteristics. Based on the long-term meteorological data of 12 meteorological stations, the temporal and spatial distribution of precipitation and dryness in the study area is analyzed. The dryness degree of each year varies greatly, ranging from 1.5 to 3.1...

Air pollution is a serious environmental issue. As a key aerosol component, PM2.5 associated toxic trace metals pose significant health risks by inhalation and ingestion, but the evidences and mechanisms were insufficient and not well understood just by their total environmental concentrations. To accurately assess the potential risks of airborne m...

Fully understanding the evapotranspiration of paddy field was conducive to making a reasonable irrigation plan and improving the water use efficiency of paddy field. Therefore, the purpose of discussing the applicability of evapotranspiration estimation model in paddy field of low hilly red soil area was to select the actual evapotranspiration mode...

Agrometeorological drought is the most important meteorological disaster that restricts the development of agricultural areas in the east of Qinghai Province. It is very important to evaluate the climate dryness by studying its temporal and spatial characteristics. Based on the long-term meteorological data of 12 meteorological stations, the tempor...

In climate-agricultural impact studies, accurate and interdependent local-scale climate variables are preferable, but both RCMs and GCMs are still subjected to bias. This study compares univariate bias correction (UBC) and multivariate bias correction (MBC) method to simulate rice irrigation water needs (IWNs) in Jiangxi Province, China. This resea...

Fusarium head blight in winter wheat ears produces the highly toxic mycotoxin deoxynivalenol (DON), which is a serious problem affecting human and animal health. Disease identification directly on ears is important for selective harvesting. This study aimed to investigate the spectroscopic identification of Fusarium head blight by applying continuo...

Land surface processes are an important part of the Earth's mass and energy cycles. The application of a land surface process model for farmland in the low-hilly red soil region of southern China continues to draw research attention. Conventional model does not perform well in the simulation of irrigated farmland, because the influence of land surf...

Monitoring and discriminating co-epidemic diseases and pests at regional scales are of practical importance in guiding differential treatment. A combination of vegetation and environmental parameters could improve the accuracy for discriminating crop diseases and pests. Different diseases and pests could cause similar stresses and symptoms during t...

Powdery mildew is one of the dominant diseases in winter wheat. The accurate monitoring of powdery mildew is important for crop management and production. Satellite-based remote sensing monitoring has been proven as an efficient tool for regional disease detection and monitoring. However, the information provided by single-date satellite scene is h...

Rice and wheat are two primary food crops, while rice-wheat rotation is one of the largest crop rotational systems with planting area of 24-26 million hm² in the world. In China, the planting area accounts for about 34%-50% of the world's total planting area, mainly distribute in Jiangsu, Zhejiang, Hubei, Sichuan, Anhui, Guigzhou and Yunnan Provinc...

In this experiment, the responses of plant growth, gas exchange of parameters, and ion concentration to different levels of irrigation water salinity and leaching fractions were investigated in hot pepper plants. Results showed that the height of the hot pepper plants decreased as the ECiw was increased from 25 d after transplanting and increased w...

In order to confirm optimal scale of paddy rice extraction in Jiangsu, the experiment was first set up four fusion images with different scales using HPF algorithm, based on HJ1 A/CCD2 image (30m×30m) and GF1/WFV4 near-infrared image (16m×16m). To screen optimal scale, it was then conducted the four images on quantitative index assessment and veget...

Accurately measuring regional evapotranspiration (ET) is of great significance for studying global climate change, regional hydrological cycles, and surface energy balance. However, estimating regional ET from mixed vegetation types is still challenging. In this study, the Surface Energy Balance Algorithm for Land (SEBAL) and the Surface Energy Bal...

The ever-growing global population faces a wide range of hazards such as tropical cyclone storm surges, heavy rains, heatwaves, droughts and many more. Long-term climate change is increasing the intensity and frequency of extreme weather and climate events and causing sea level rise and ocean acidification. Now more than ever, we need to be weather...

In order to make the SiB2 suitable for the small watershed ecosystem of farmland in low hilly red soil areas in this paper, the soil characteristic parameters were confirmed, together with crop physiological and optical parameters. A single point scheme of data assimilation based on Ensemble Kalman Filter was proposed to improve the simulation prec...

According to the net radiation, soil heat flux and microclimate data of the experimental area in Yujiang county of Jiangxi province, we analyzed fitting results of the different evapotranspiration models of time scales, the sensitivity analysis of evapotranspiration to weather elements, and the irrigation effects on potential evapotranspiration. Th...

Temperature is generally preferred to demonstrate thermal relations with the development and growth of crops, an objective mark indicating whether a system remains heat balance alongside of other systems in the light of thermodynamic fundamentals characterized by the same temperature in all the systems maintaining heat balance.Extensively applied i...

We investigated whether leaching fraction (LF) is able to modify the effects of irrigation water salinity (ECiw) on evapotranspiration (ET). We conducted an experiment with a completely randomized block design using five levels of ECiw and two LFs. Results showed that the electrical conductivity of drainage water (ECdw) in an LF of 0.29 was conside...

The paper selected the Bowen ratio data and the meteorological data from June to November in 2015 of paddy field of hilly area,,which was used to analyze the distribution characteristics and typical diurnal and monthly variation of the actual evapotranspiration of rice field in the low hilly red soil region at different stages of rice growth. At th...

Land surface evapotranspiration (ET) is a central component of the Earth's global energy balance and water cycle. Understanding ET is important in quantifying the impacts of human influences on the hydrological cycle and thus helps improving water use efficiency and strengthening water use planning and watershed management. China has experienced tr...

An optimized BP-MOS model was used to forecast the maximum and minimum temperatures in the next 1-7 days in different seasons, and the results were compared with the forecast effects of ECMWF 2 m temperature products and conventional linear MOS method. The results show that it could effectively improve the accuracy of prediction effect when the pro...

This title systematically describes the basic concept, theory and state-of-the-art in the agrometeorological factor influence on the growth and development of crops and the formation of yield. It reveals the relationship between agricultural production and meteorological conditions and the related principles, analyzes the appropriate meteorological...

Three irrigation experiments were conducted at the agrometeorological experimental station in Nanjing. The leaf temperature of flooded rice was lower than that of wet irrigation by 0.4-0.7°C. Water use efficiency of leaf increased by 0.24g/kg. The average stomatal conductance was greater than that of wet irrigation 0.123-0.183 mol/(m2.s).

We investigated whether leaching fraction (LF) is able to modify the effects of irrigation water salinity (ECiw) on evapotranspiration (ET). We conducted an experiment with a completely randomized block design using five levels of ECiw and two LFs. Results showed that the electrical conductivity of drainage water (ECdw) in an LF of 0.29 was conside...

Background: Little evidence exists on the relationship between heat and subtypes of stroke mortality, especially in China. Moreover, few studies have reported the effect modification by individual characteristics on heat-related stroke mortality. In this study, we aimed to evaluate the effect of heat exposure on total, ischemic, and hemorrhagic st...

In order to understand and master the mechanism of evaportranspiration of camphor trees aiming at making better use of water， the rule of sap flow in camphor tree was analyzed through the experimental data，which were measured by thermal dissipation sap flow sensor，SF-L sensor in every 30 minutes，combined with the corresponding meteorological factor...

Wheat powdery mildew has become one of the most serious wheat diseases in China, so it is necessary for using modern remote sensing information technology to improve the monitoring ability of the disease for guiding disease prevention and ensuring Chinese grain production safety. Feature selection was one of the key issues for establishing inversio...

The analysis of the characteristics and footprint climatology of farmland water and heat fluxes has great significance to strengthen regional climate resource management and improve the hydrothermal resource utilization in the region of red soil. Based on quality controlled data from large aperture scintillometer and automatic meteorological statio...

In order to find out the relationships between the formation of cyanobacteria bloom in Lake Taihu and surface temperature，meteorological data and satellite observations of the lake and surrounding areas from 2003 to 2013 were used to perform quantitative analysis in this paper． It is found that there is a wide range of daily average temperature ( 0...

Soil temperature has important function on a series of soil physical，chemical and biological chemical processes．The variation characteristics of soil temperature and meteorological factors are of great significance in improving ecological environment and the land utilization in red soil regions．Based on field experiment，this study analyzed the corr...

The book is the result of a research project supported by the Ministry of Science and Technology of China. It focuses on the monitoring and quantitative evaluation of the growth of main crops of wheat, rice and maize in China. This book describes the basic parameters of crop growth and environmental parameters by remote sensing inversion. It gives...

The experiment was carried out at the agro-meteorology experiment station of Nanjing University of Information Science & Technology. The aim is to consider the water using efficiency of rice leaf and physiological influence due to different irrigation amount. When it appeared high temperature during the reproductive and growth period of rice, flood...

In this study we investigate the variability of extreme rainfall and temperature and the circulation anomalies associated with wet and dry events. To achieve the objectives of this study, the datasets used include; Temperature from Climate Research Unit (CRU), The rainfall from Global Precipitation Climatology Center (GPCC), wind from interim reana...

Purpose The objective of the present study was to investigate the interactive effects of nitrogen (N) addition, temperature, and moisture on soil microbial respiration, microbial biomass, and metabolic quotient (qCO2) at different decomposition stages of different tree leaf litters. Materials and methods A laboratory incubation experiment with and...

Powdery mildew is one of the main serious diseases for winter wheat. An accurate and timely forecasting of the wheat powdery mildew occurrence at the regional scale by using multi-source data can provide important information for crop protection decision making, and achieving effective prevention of wheat powdery mildew. In this study, the Landsat8...

Atmospheric correction is an indispensable process in quantitative remote sensing research． In this study， MODTＲAN model was used for the atmospheric correction of one HJ /CCD image，and the effectiveness of correction was evaluated based on the spectral characteristics of typical ground objects． The results showed that atmospheric correction elimin...

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To study the water and heat flux characteristics of red soil areas，use regional climate resources better，and understand the process of agricultural ecological system，the observations of this paper were conducted in Yingtan experimental area in 20 1 3 and 2Ol4．And the main data included 2013— 20I4 field Bowen ratio system data and local meteorologic...

On the basis of the meteorological observation data and remote sensing data over the Taihu Lake and its surrounding areas during 2003 to 2013, combined with the WRF3.5.1 simulations, the relationships between the cyanobacteria blooms in Taihu Lake and surface wind speeds were analyzed. The results show that cyanobacteria blooms mainly occurred in t...

To develop a suitable scale of remote sensing extraction plots of winter wheat planting area in Jiangsu province，spatial resolution of 2 m × 2 m panchromatic image of GF-1 and 30 m × 30 m multispectral images of HJ-1 at jointing stage were selected for study． Three different scales of full-color images resampled from the panchromatic image of GF-1...

This paper is aimed to extract the paddy rice area of Jiangsu,Anhui and Jiangxi provinces in 2010 by using muti-temporal MODIS imagery, and to investigate the efficiency of Fast Independent Component Analysis algorithm in dealing with mixed pixels. In order to map the paddy rice area, the time series of Land Surface Water Content and Normalized Dif...

The cell proliferation and recovery growth after high temperature stress were discussed in this paper, with Microcystis aeruginosa as the experimental material. Two groups of 35℃ and 25℃ cultures were set at three different initial phosphate concentrations -0.05 mg/L(low-P), 0.50 mg/L(medium-P) and 5.00 mg/L(high-P). They were cultured for 3, 6, an...

In a soil-plant system, some cations can hinder heavy metal uptake due to competitive effects, but such a phenomenon has never been studied for the plants naturally coated with iron plaque on root surface. Rice seedlings were grown in a hydroponic culture to investigate the effects of external cations (Ca2+ and Mg2+) supply on heavy metal (Cu2+) av...

Abstract：High temperature catalytic combustion method was compared with a wet chemical oxidation method in measuringconcentrations of dissolved organic carbon （DOC）and dissolved total nitrogen （DTN）in known samples，forest soil zerotension percolates and soil extracts by using Shimadzu TOC-VCSH analyzer and continuous flow analyzer（CFA）.The results...

The soil moisture at surface was measured by the advanced tensiometer for the maximum range of 15 bar. The data of soil moisture, runoff and precipitation in the fields were collected by position- fixed method during peanut growing season from 2001 to 2003. The influence of peanut compound system on soil moisture, rainfall and water balance compone...

In order to improve the accuracy of wheat yellow rust disease severity using remote sensing and to find the optimum inversion model of wheat diseases ,the canopy reflectance and disease index (DI) of winter wheat under different severity stripe rust were acquired .The three models of PLS (Partial Least Square) ,BP neural network using seven hypersp...

An sesstion oral report

An sesstion oral report

This study aimed to investigate the mechanisms involved in Microcystis aeruginosa (M. aeruginosa) compensatory growth after moderate high-temperature stress. In the experiment, M. aeruginosa were cultured for 3, 6, and 12 d at 35°C before being transferred to normal conditions (25°C), and then cultured for 30 days for recovery. The algae that were...

Continuous cloudy rainy weather has a direct impact on the high and stable yield of winter wheat. The study of disaster risk zoning can provide a basis for the management of disasters. Based on meteorological data from blossom to maturity and winter wheat yield，planting area and cultivated area from 1980 to 2012，we established a comprehensive risk...

Cyanobacteria blooms have become a global problem that destroy water environments. Frequent algae blooms are influenced by short-term changes in temperature. Some studies have shown that several microalgae, such as Pavlova viridis and Tetraselmis tetrethele, apparently show over-compensatory growth after UV-B or nutrient deficiency stress, but ther...

. The study was conducted by using the daily meteorological observation data, continuous rain disaster samples and data during the filling stage of winter wheat in Anhui from 1980 to 2012. The authors selected 3 main disaster causing factors which were the number of rainy day, accumulative rainfall and sunshine hours of rain disaster process. Mathe...

Based on the observational data from meteorological stations in Northwest and Beijing's sandstorm information, the climate influence index D was modified according to the climate conditions in Northwest China, and the relationship of climate influence index D in Northwest and sandstorm occurrences in Beijing was analysed. The results showed that: F...

The evaluation of crop model is a key process for its application. GECROS model had been developed by Wageningen in recent years. GECROS uses stronger mechanism and more concise algorithms to summarize the current knowledge of individual physiological processes and their interactions and feedback mechanisms. To provide a foundation for the future l...

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Recovery growth of Microcystis aeruginosa after sub-high temperature stress was investiga- ted in this paper. The treated groups under 35 °C were cultured for 3, 6, and 12 days before being transferred to normal conditions, and the algae under 25 °C all the time was set as the control. Cell density, chlorophyll a, carotenoid, malondialdehyde and an...

HJ-1 Satellite images have a unique advantage in monitoring and assessing quality of large-scale water. Based on HJ -1 Satellite CCD data and synchronous in -situ chlorophyll -a data, water reflectance is obtained through calibration,atmospheric correction and geometric correction, then Pearson correlation analysis is made between reflectance of si...

In crop acreage monitoring, mixed pixel problem has been considered to be the key issues. Taking the Shuyang county of Jiangsu province as the study area, one HJ-1A image at the flowering stage of winter wheat was chosen. To extract the total crop acreage based on the difference and severability spectral information of different objects, the paper...

Based on the observed data of 10 conventional meteorological stations in Guanzhong area from 1971 to 2010 and investigated data of winter wheat growth periods from 1986 to 2010，heat resources changes in the winter wheat growth period and their variation effects were analyzed by using mathematical statistic method． The results show that heat resourc...

Aimed to deal with the limitation of canopy geometry to crop LAI inversion accuracy a new LAI inversion method for different geometrical winter wheat was proposed based on hotspot indices with field-measured experimental data. The present paper analyzed bidirectional reflectance characteristics of erective and loose varieties at red (680 nm) and NI...

Information on rice phenology is essential for yield estimation and crop management. To test the ability of remote sensing in detecting multiple phenological stages, paddy rice canopy spectrum was measured by a hand-held radiometer. Normalized difference vegetation index (NDVI) was calculated from spectrum, and the slope of NDVI was obtained as its...

Paddy rice is one of the main crops in China． Timely information acquisition of rice planting area and spatial distribution at a large scale is of great significance in guiding rice production and regulating regional balance of supply and demand． In order to obtain paddy field area of Jiangsu Province， three types of vegetation indexes( including N...

Based on the daily average air temperature data at 165 meteorological stations in North and Northeast China from 1960 to 2010， the temporal and spatial variation characteristics of the above 0 ℃ and 10 ℃ steady accumulated temperature， their lasting days， the beginning and ending dates were analyzed using a linear trend estimation method in order t...

The field heating treatment and growth observation experiment on winter wheat were carried out. In light of the historic data, the statistical methods was used to analyze the effects of warming on filling process of winter wheat, and to determine the heat damage index of winter wheat during grain filling period in North China.

An Open-Top Chamber experiment was conducted by setting different CO2 concentration treatments to observe and analyse the effect of higher CO2 concentration on leaf characteristic and evapotranspiration in winter wheat． The results showed that the LAI，green leaf dry weight，leaf thickness and evapotranspiration of winter wheat increased in different...

More attentions had been given to the impacts of climate change on agroecological environment and crop yield in China. Through analyzing a series of research results in the past 10 years at home and abroad, this paper mainly demonstrates the influences and research methods of the impacts of climate change on the yield of three major food crops, and...

Analyzing the soil moisture characteristics and related affecting factors i of importance in improving agricultural production and ratonal land use in red soil regions.This study discusses the relationship between soil moisture (0-15, 15-30, 30-60, and 60-100 cm) and the meteorological factors (e.g. wind velocity, precipitation, vapor pressure, air...

Being orientated to the low prescion of crop leaf area index (LAI) inversion using the same spectral vegetation index during different crop growth stages, the present paper analyzed the precision of LAI inversion by employing NDVI(normalized difference vegetation index). Ten vegetation indices were chosen including six broad-band vegetation indices...