Xiao Xiao

Chinese Academy of Sciences | CAS · Institute of Applied Ecology

et al. Urban spatial structural change and transformation in the new era.

Urban functional area (UFA) is a core scientific issue affecting urban sustainability. The current knowledge gap is mainly reflected in the lack of multi-scale quantitative interpretation methods from the perspective of human-land interaction. In this paper, based on multi-source big data include 250 m × 250 m resolution cell phone data, 1.81 × 105...

Objectives Spatial equity is one of the essential indicators to measure service capacity of pharmacies. Previous studies have measured spatial equity of pharmacies by comparing pharmacy density, without explicitly incorporating any measures of spatial dimension. Data used in the past made it difficult to investigate pharmacies comprehensively withi...

Public health facility planning is one of the important contents of national land planning, which needs to balance geospatial equity and service capacity. However, assessment models and data acquisition methods based on a geosystemic analysis perspective have been lacking for a long time. By focusing on urban public toilets and taking the highly ur...

The quantitative and qualitative assessment of post-disaster vegetation damage and recovery in the core area of the Wenchuan earthquake is of great significance for the restoration and reconstruction of natural ecosystems and the construction of human settlements in China. This study used time series analysis to determine the time of MODIS data and...

In order to formulate policies to control regional air pollution and promote sustainable human–land system development, it is crucial to study the space–time distribution of air pollution and the population exposure risk. Existing studies are limited to individual fine particulate pollutants, which does not fully reflect the comprehensiveness of ai...

The rational allocation of functional areas is the foundation for addressing the sustainable development of cities. Efficient and accurate identification methods of urban functional areas are of great significance to the adjustment and testing of urban planning and industrial layout optimization. Firstly, by employing multisource geographic data, a...

Land use and land cover change( LULCC) is an important driver of carbon storagein terrestrial ecosystem． Northeast China plays an important role in protecting China's securities of food and ecology． Adopting Dongliao County and its tow nships in Jilin Provinceasacasearea，one ofthe important commodity grain bases in Northeast China，thestudy analyzed...

Since December 2019, the novel coronavirus pneumonia (NCP) epidemic has spread rapidly acrossthe country in a short period of time, and after January 23, 2020, major public health emergency first-level re-sponses have been successively launched across the country. The NCP epidemic has become “a major publichealth emergency with the fastest spread,...

The high-resolution regional division of mountainous area types has important scientific significance for promoting precise management of land space and regional sustainable development. At present, the classification method of mountainous area types is mainly at the county level and above, while classifications for towns and villages are nearly no...

Accurate identification of urban functional areas is of great significance for optimizing and coordi-nating urban population and land system, improving urban planning and promoting sustainable urban devel-opment. We designed the minimal research unit based on road network and selected the public recognitionand feature general area of kernel density...

The numbers of infected people and the planning of emergency medical facilities are the key factors for the response of major public health emergency. The conclusions are as follows: (1) The number of potential infections in Wuhan city based on migration index is close to the actual data, which indicates that migration data is of great significance...

The industrial spatial relationship is a cross-cutting subject of economic geography and geographical information science; it is of considerable significance to scientifically investigate and induce industrial space relationships for promoting the sustainable planning and development of the regional economic system. Taking Shenyang City as the rese...

Urban spatial structure is the form of interaction among the urban human-land relationship elements.Taking the Northeast 36 cities as the research area, using the more than 4 million Points of Interest (POI)grouped by industry types, the article used the kernel density estimation method, the diversity index methodand the standard deviational ellips...

As the core of geography research, human-natural relationship run through each stage of geographical development. In-depth exploring the impact of human activities and natural environment-driven land surface system changes and their relationship with the sustainable development of human society, play an important role in the local, regional and glo...

The evaluation of forestry ecosystem service value is of great significance to promoting thesustainable development of forestry． By using the spstial analysis techniques including remote sensingdata and GIS method，the function value and spatial distribution characteristics of forest ecosystem serv-ices in Guizhou province in 2015 were investigated．...

Based on the residential POI data of the Tiexi District in Shenyang, a geographical weighted regres-sion (GWR) model was constructed by adding three variables that could affect the traditional industrial area'sproperty prices as well as the traditional variables, the three added variables include house age, residentialdensity and the distance betwe...

Water area and cropland are important resources for food production，the temporal andspatial changes of which maintain the sustainable development of regional agriculture． The threenortheastern provinces in China are typical areas where human activities have exerted significantimpacts on land cover change． It is of great significance to analyze the...

It is a crucial research content of human-economic geography to quantitatively research the spatialcorrelation between urban residences with its price and the regional commercial service. Taking Shenyang Cityin Liaoning Province as a case study and using the residential and retail points of interest (POI) as a datasource, this paper extracted the s...

The traffic network data composed of highways，expressways and railways in Henan Province weretaken as the data source，and the GIS spatial analysis method was used to analyze the spatial distribution，devel-opment degree，and road network density of traffic network in Henan Province through the shortest distance mod-el，the road network connection mode...

Geospatial big data, which is mainly represented by points of interest (POIs), is important for innovative studies of man–land relationship. This paper outlines key technology systems such as the big-data-based multidimensional semantic association model, semantic metadata indexing and organizing, and big data visualization algorithm. We calculated...

Based on the theories of evolutionary economic geography and industrial ecology，wemapped the evolutionary process and characteristics of magnesium industry，and established thestructure and function model of magnesium industry ecosystem with Dashiqiao City of LiaoningProvince as a case． The evolution of magnesium industry system in Dashiqiao was div...

It is of great significance to investigate spatial characters of the urban commercial facilities, given that thecommercial activity is a key component of the coupled human-natural complex system. By employing the POI(Points ofInterest)data, Shenyang’s retail commercial distribution pattern was extracted by kernel density method, different retaillay...

It is a crucial research content of human-economic geography to quantitatively research the spatialcorrelation between urban residences with its price and the regional commercial service. Taking Shenyang Cityin Liaoning Province as a case study and using the residential and retail points of interest (POI) as a datasource, this paper extracted the s...

Since 2003，the state issued three opinions according to the revitalization ofNortheast China and other traditional industrial base，including of Document 11［2003］proclaimedannounced by General Office of the CPC Central Committee，Document 33［2009］ proclaimedannounced by Office of the State Council，Document 7［2016］ proclaimed announced by GeneralOffic...

Forest ecosystem is a critical component of the terrestrial ecosystem, and its service value evaluation could offer a scientific basis for improving forestry sustainability as well as for policy making. This study applied the remote sensing interpretation data of the forest in Northeast China in 2015 to assess the ecosystem service value and figure...

The new coastal band of Landsat8 with strong penetration ability provides important data for offshore sediment and water monitoring. However, the coastal band effect for offshore sediment water classification remains to be verified. This study selected one Landsat8-OLI multi-spectral image of offshore waters in Bo Hai Bay, which is covered by few c...

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