Huicong Jia

Chinese Academy of Sciences | CAS · Institute of Remote Sensing and Digital Earth

Drought poses a serious threat to agricultural production and food security in the context of global climate change. Few studies have explored the response mechanism and lag time of agricultural drought to meteorological drought from the perspective of cultivated land types. This paper analyzes the spatiotemporal evolution patterns and hysteresis r...

As drought vulnerability assessment is fundamental to risk management, it is urgent to develop scientific and reasonable assessment models to determine such vulnerability. A vulnerability curve is the key to risk assessment of various disasters, connecting analysis of hazard and risk. To date, the research on vulnerability curves of earthquakes, fl...

Drought events have considerable direct and indirect economic, environmental, and social impacts, but few studies have analyzed and assessed future changes in drought disasters from a risk perspective to guide responses and adaptations thoroughly. Studying the potential climate-related impacts on future crop yield is therefore urgently needed. Inte...

China is a country that is significantly affected by and sensitive to global climate change. Floods are one of the major natural disasters in China, and they occur with high frequency and wide impact in the country, causing serious losses. Since the 1990s, they have become more frequent. China has made remarkable achievements in flood risk manageme...

The role of natural disaster adaptation is increasingly being considered in academic research. The Paris Agreement and Sustainable Development Goal 13 require measuring the progress made on this adaptation. This review summarizes the development stages of adaptation, the multiple attributes and analysis of adaptation definitions, the models and met...

In this study, based on the EM-DAT (The Emergency Events Database) database, disaster assessment for the “Belt and Road” region was carried out in relation to the SDG13.1.1 indicator of the Sustainable Development Goals (SDGs) agenda launched in 2015. A new method for diagnosing trends in the SDG13.1.1 indicators based on the Theil-Sen median metho...

Typhoons are a product of air-sea interaction, which are often accompanied by high winds, heavy rains, and storm surges. It is significant to master the characteristics and pattern of typhoon activity for typhoon warning and disaster prevention and mitigation. We used the Kernel Density Estimation (KDE) index as the hazard index; the probability of...

A vulnerability curve is an important tool for the rapid assessment of drought losses, and it can provide a scientific basis for drought risk prevention and post-disaster relief. Those populations with difficulty in accessing drinking water because of drought (hereon “drought at risk populations”, abbreviated as DRP) were selected as the target of...

Droughts are one of the primary natural disasters that affect agricultural economies, as well as the fire hazards of territories. Monitoring and researching droughts is of great importance for agricultural disaster prevention and reduction. The research significance of investigating the hysteresis of agricultural to meteorological droughts is to pr...

Studies of the gene and miRNA expression profiles associated with the postnatal late growth, development, and aging of skeletal muscle are lacking in sika deer. To understand the molecular mechanisms of the growth and development of sika deer skeletal muscle, we used de novo RNA sequencing (RNA-seq) and microRNA sequencing (miRNA-seq) analyses to d...

A region’s capacity for marine disaster risk reduction is characterized by the resources that can be mobilized. These resources include pre-disaster defense, disaster monitoring, warning, emergency response, post-disaster restoration, and reconstruction. It is a very important index to effectively evaluate the regional capacity to overcome marine d...

As a “starting zone” and “amplifier” of global climate change, the Qinghai–Tibet Plateau is very responsive to climate change. The global temperature rise has led directly to an acceleration of glacial melting in the plateau and various glacier avalanche disasters have frequently occurred. The landslide caused by glacier avalanches will damage the...

Wildfires are one of the most destructive disasters on the planet. They also greatly impact the land surface. Satellite data have been widely used to detect the outbreak and monitor the expansion of fire incidents for damage assessment and disaster management. Polar-orbiting satellite data have been used for several decades but data from geostation...

Winter wheat cropland is one of the most important agricultural land-cover types affected by the global climate and human activity. Mapping 30-m winter wheat cropland can provide beneficial reference information that is necessary for understanding food security. To date, machine learning algorithms have become an effective tool for the rapid identi...

Applying disaster system theory and with reference to the mechanisms that underlie agricultural drought risk, in this study, crop yield loss levels were determined on the basis of hazards and environmental and hazard-affected entities (crops). Thus, by applying agricultural drought risk assessment methodologies, the spatiotemporal distribution of m...

How to combine disaster prevention and mitigation, post-disaster reconstruction and poverty alleviation has become a new hot issue. On 12 May 2008, a major earthquake devastated the Wenchuan area in Sichuan Province in the heartland of China. After ten-years have passed, it is a good time to review what we learned from the Great Wenchuan earthquake...

The Visible and Infra-Red Radiometer (VIRR) is an improved third-generation sensor used for Earth observation with channels ranging from visible to thermal bands and carried on board the Chinese FengYun-3C satellite. An active fire detection algorithm based on VIRR data has already been designed and tested in different study areas worldwide. Most o...

As a key component of disaster reduction management, disaster emergency relief and reconstruction is an important process. Based on disaster system theory, this study analyzed the Jiangsu tornado from the formation mechanism of disasters, through to the economic losses, loss of life, and social infrastructure losses along the tornado disaster chain...

China is a country frequently hit by droughts and enormous losses, particularly in agriculture, were claimed in the past years. This chapter discusses drought in China. It first explores the spatial and temporal patterns and dynamic change of historical droughts based on statistical data. Causal factors and mechanisms of agricultural drought, which...

The East Asian monsoon has a tremendous impact on agricultural production in China. An assessment of the risk of drought disaster in maize-producing regions is therefore important in ensuring a reduction in such disasters and an increase in food security. A risk assessment model, EPIC (Environmental Policy Integrated Climate) model, for maize droug...

We explored the regional shifts in hazards at the county level in China for three different time periods (1956–1965, 1976–1985, and 1996–2005). The frequency of natural disasters was used as the assessment index. Based on the probability of natural disasters in each county, the spatial change in risk with increasing intensity of natural disasters w...

Over a period of 2 months in 2014, two large earthquakes struck Jinggu and Ludian, Yunnan, China successively. Although there was only 0.1 magnitude of difference between the two great earthquakes, losses from the “10∙07” Jinggu Earthquake was much lower than that of “8∙03” Ludian Earthquake in China. Earthquake disaster loss or risk is related to...

A wavelet transform technique was used to analyze the precipitation data for nearly 60 years (1954–2012) in Yunnan Province of China. The wavelet coefficients and the variance yield of wavelet were calculated. The results showed that, in nearly 60 years, the spring precipitation increased slightly; however, the linear trend of other seasonal and an...

The East Asian monsoon has a tremendous impact on agricultural production in China. An assessment of the risk of drought disaster in maize-producing regions is therefore important in ensuring a reduction in such disasters and an increase in food security. A risk assessment model, EPIC (Environmental Policy Integrated Climate) model, for maize droug...

Data from Landsat ETM+ images, meteorological records, digital elevation mode data and other statistical data were used to extract wetland-related information for the Heilongjiang River Basin, China, an area significantly affected by global climate change. Based on a pressure-state-response conceptual model, an integrated assessment index was const...

Eco-environmental sensitivity assessment as a new research field on sustainable development is the foundation for establishing early warning systems for ecological safety and environmental management. Many scholars have started to study national and social safety from an ecological point of view. Wushen Banner, which is located in the transitional...

Accurately predicting the populations with difficulties accessing drinking water because of drought and taking appropriate mitigation measures can minimize economic loss and personal injury. Taking the 2013 Guizhou extreme summer drought as an example, on the basis of collecting meteorological, basic geographic information, socioeconomic data, and...

Abstract Wetlands are the important strategic resources of regional sustainable development and ecological security． Based on remote sensing image data of 1985，2000 and 2011，with the use of ＲS，GIS，gray relational technologies，the number and dynamic spatial pattern of land use / cover change of the Dongting Lake area for nearly 30 years was analyzed...

The epidemics of cholera are impacted by many climatic and environmental factors such as precipitation, temperature, elevation and so on. The paper analyzed the suitable degree of V. Cholerae in China using MaxEnt based on some geographic and climatic factors, and predicted the cholera risk in each district of China according to the suitable degree...

Increasing populations are causing an increase in food demands, and the area of cultivated land expands every year. Inappropriate land transition from ecology to production results in the constant decline of the ecological security level and influences the regional sustainable development. Adjusting unreasonable land use mode and reconstructing nat...

The flood and drought hazards have been getting more serious attention since 1990's. And they become the obstacle factors constraining China's agriculture and sustainable economic development. This paper selected 2,359 county units and with disasters frequency as flood-drought hazard assessment index, through hazard digital mapping, the spatial and...

To achieve a fully automatic registration between HJ-1 CCD images and HJ-1 infrared images is a difficult task as it must deal with the varying illuminations and resolutions of the images, different perspectives, and the local deformations within the images. In this paper, aimed at those registration issues, a fully automatic registration approach...

Objective: To assess the quantitative relationship between the distribution of Himalayan marmot and its ecological environment, the terrain, the temperature and the precipitation, using remote sensing and geographic information system in Qinghai province. Methods: The distribution of Himalayan marmot was located by Google Earth and ArcGIS software...

LiDAR data contains the elevation and brightness information of land surface, vegetation cover and construction. Ground filtering and interpolation method are the key for extracting the DEM accuracy based on the point clouds. This paper takes Zhangye City, Gansu Province in western mountainous areas as the study area, based on the point clouds of 0...

Wenchuan in Sichuan Province, China, was hit by an 8.0 magnitude earthquake on 12 May 2008. Thousands of buildings were destroyed and thousands of people were hurt. History tells us that after earthquakes, floods and other natural disaster, infectious diseases often outbreaks. In this study, with the help of spatial information technologies includi...

The WLFZ in the Three Gorges area is alternately controlled and influenced by both water ecosystem and terrestrial ecosystem. Its ecological vulnerability and instability are significant. Taking small watershed as a unit of assessment, we select population density, urbanization intensity, temperature, precipitation, and humidity and vegetation cove...

The urban heat island (UHI) effect is becoming an influential factor on the city's environment along with the rapid development of urbanization process. This paper uses Landsat-5 TM RS image of the year 1988, 2007 and 2010 based on NDVITEM model and land temperature retrieval method to obtain Beijing land surface temperature distribution map throug...

Assessment of wetland ecosystem health is the basis for wetland conservation, has an important role in guiding how to improve the management level of wetland ecological environment. As the world's unique large-area alpine wetland, the source region of Yangtze, Yellow and Yalu Tsangpo Rivers of Qinghai province is the ecological barriers of ecologic...

Vegetation fractional cover, which defines the amount of vegetation on the surface of the land, is a key parameter in land surface models. Based on a geometric-optical model in combination with a linear spectral mixture analysis, the retrieval of shrub fractional cover in Wushen Banner of Inner Mongolia in the Mu Us Sandland using HJ-1B multispectr...

Forest biomass is an important indicator in carbon sequestration capacity and forest carbon budget evaluation, but there is less focus on shrub biomass. Multi-angle images provide the volume scattering information which could improve inversion accuracy. HJ-1 satellites are the sun synchronous recurrent frozen orbit small satellite constellation for...

Vegetation fractional cover which defines the amount of vegetation on the surface of the land, is a key parameter in land surface models. Based on a geometric-optical model in combination with linear spectral mixture analysis, this paper discusses the estimation of shrub fractional cover in Wushen Banner of Inner Mongolia in the Mu Us Sandland usin...

The main missions of HJ-1 satellite are to monitor pollution, ecosystem destruction and natural disasters. In recent years, Inhalable particle (PM10) has become the primary pollutant of major cities in China, which seriously affects the living environment of its residents. In this paper, we made use of high-resolution CCD data of HJ-1 satellite to...

As the global climate change and food security became an increasingly important issue, agriculture drought comes to the focus of attention. China is a typical monsoon climate country as well as an agricultural country with the world's largest population. The East Asian monsoon has had a tremendous impact on agricultural production. Therefore, a mai...

As the scientific basis for drought risk management practices, risk assessment of drought has got more and more extensive attention of all circles in society. In this paper, based on literature reading, drought risk assessment research at home and abroad was reviewed from four different regional scale. The results show that(1) agricultural drought...

Digital Agriculture is one of the important applications of Digital Earth. As the global climate changes and food security becomes an increasingly important issue, agriculture drought comes to the focus of attention. China is a typical monsoon climate country as well as an agricultural country with the world's largest population. The East Asian mon...

The spatial distribution of sub-pixel components has an impact on retrieval accuracy, and should be accounted for when inverting a three-dimensional adiative transfer model to retrieve leaf area index (LAI). To investigate this effect, we constructed three realistic scenarios with the same LAI values and other properties, except that the simulated...

The leaf area index (LAI) is an important ecological parameter that characterizes the interface between vegetation canopy and the atmosphere. In addition, it is used by most process-oriented ecosystem models. This paper investigates the potential of HJ-1 CCD data combined with linear spectral unmixing and an inverted geometric-optical model for the...

Resilience is increasingly used as an approach for understanding the dynamics of natural disaster systems. This article presents the origin of resilience and provides an overview of its development to date, which draws on the wide literature on ecological science, social science, social–environmental system and natural hazards. From a geographic pe...

A risk map of natural disasters is an atlas to indicate the intensity of predicted disaster risk which may occur over next several decades in a region,and is the basis of regional risk management.Automatic map generalization is a complex decision-making process of expressing objective laws of geography,and also a hot and tough issue in disaster ris...

Eco-environmental Sensitivity assessment as a new research field on sustainable development is the foundation for establishing early warning systems for ecological safety and environmental management. Many scholars have started to study the national safety and social safety from the ecological point of view till now. Wushen Banner locates in the tr...

An integrated urbanization level (CL) index and an integrated natural disaster intensity (QC) index were developed on the basis of Disaster System Theory and China Natural Disaster Database for integrated urban disaster risk assessment. Integrated quantitative assessments of the urban socio-economic system and the intensity of hazards in China were...

Flood has a close relationship with drought in causing reasons and control countermeasures. Based on statistic information of flood and drought for county units in total period (1949-2005), period - segment (1956-1965, 1996-2005), season and month scales, we selected disaster frequency of 2359 counties as the index and discussed spatial and tempora...

Drought is an important factor which restricts agricultural production, especially, in arid and semiarid regions of China, such as Xinghe County. Local residents gain amount of experience in adaptation under threat of long time drought. After twice field observation and questionnaire survey, the authors bring forward a method to analyze draught res...

Shenzhen is one of the special economic zones in China. It has developed rapidly from rural land to an industrial city since the mid-1980s. With the process of urbanization, flood has become a threat to the security of the city area. Based on relief map data and rivers general investigation data for Shenzhen region, the spatiotemporal change of riv...