Jianhua He

Wuhan University | WHU · School of Resources and Environmental Science

Quantitative measurement of urban green spaces (UGSs) plays a fundamental role in enhancing their ecological functions and services. Current studies have not adequately analyzed the multifunctional characteristics and the diverse benefits of urban green spaces at the national scale. This study developed a multidimensional indicator system in terms...

Diagnosing the spatial interaction between urbanization and ecosystem services (ES) is of guiding significance for regional sustainable development. The complex spatial interactions mechanism between different types of urbanization and ES during historical and future periods were rarely explored at the whole watershed scale. To fill this gap, we sy...

A polarimetric synthetic aperture radar (PolSAR) has great potential in ground target classification. However, current methods experience difficulties in separating forests and buildings, especially oriented buildings. To address this issue, inspired by the three-component decomposition method, multiple new scattering models were proposed to descri...

The compilation of plans for the protection and utilization of natural resource assets owned by the general population is of great practical significance in supporting the preservation and appreciation of natural resource assets, preventing the loss of state-owned assets, and realizing the reform goal of unified management of natural resource asset...

Given the important role of urban green space (UGS) playing in sustainable cities, UGS has received extensive attention and study. However, most studies were limited to individual cities or regions and yielded inconsistent results due to the use of diverse data sources and methods, and little is known about the inequality in green provision at the...

Rural decline characterized by population loss, aging, and land abandonment, has become a dilemma for sustainable development. The spatial optimization of rural settlements is considered a valuable solution for stimulating rural vitality. Rural development has different stages and trajectories, which have been overlooked in the spatial optimization...

With astonishing and rapid development in China since the Reform and Opening-up in 1978, serious air pollution has become a great challenge. A better understanding of the response of PM2.5 pollution to socioeconomic development after the Reform and Opening-up policy is benefit for pollution control. However, heterogeneous influences of biophysical...

Urban green corridors are the vital link connecting urban blue-green space and provide ecosystem services. Although numerous studies have been carried out to identify urban green corridors, few studies have focused on the demand of both urban residents and species for blue-green space from the perspective of daily life circles, which are the basic...

Land consolidation has greatly altered land use patterns and the corresponding ecosystem services (ES) in China. However, the potential consequences of different consolidation measures for the interaction of ecosystem services are still largely unknown. Here, from a simulation perspective, we predict potential separate and joint influences of three...

Urban green space (UGS) can simultaneously provide social and ecological benefits for humans. Although numerous studies have evaluated the multifunctional benefits of urban green space, few of them have determined the differentiated conservation priorities of UGS towards the tradeoff relationship of multiple UGS functions. Here, we proposed an inte...

Cropland conversion is a significant theme of the influence of human activities on ecological systems and global food security. Conventionally, cropland conversion in China has been deemed to match the dynamic balance of cropland resources well and to ensure food security for the whole country. However, local studies have presented some conflicting...

Social interaction has become one of the key factors affecting the spatial reconstruction of rural settlements (SRRS). However, most studies ignored the multi-scale impact of social networks on the identification of restructuring types of rural settlements. This paper, taking Ezhou City of Hubei Province, China as the case study area, developed a p...

Severe tropospheric O3 pollution has swept across China in recent years. Consequently, investigation of tropospheric O3 concentration influencing mechanism is of significance for O3 pollution control in China. Previous studies have rarely detected combined impacts of natural factors and anthropogenic activities behind tropospheric O3 concentration...

Habitat fragmentation has largely reduced biodiversity in the urban fringe. The prioritization of individual habitat patches can provide spatially explicit guidance for ecological conservation and restoration. Numerous studies discussed the effectiveness of purely spatial connectivity metrics to rank the conservation priority of habitats, but hardl...

Landscape connectivity is important for all organisms as it directly affects population dynamics. Yet, rapid urbanization has caused serious landscape fragmentation, which is the primary contributor of species extinctions worldwide. Previous studies have mostly used spatial snap-shots to evaluate the impact of urban expansion on landscape connectiv...

Ecosystem health assessment is vital for regional ecological restoration and management. Although many studies have improved the framework of ecosystem health assessment at the regional scale, most of them primarily focus on the single measurements of the natural states of ecosystems or external disturbances. However, there is a lack of comprehensi...

Landscape connectivity can largely affect the level of biodiversity and it is a key concern in conservation planning. Considering that protected areas (PAs) may become functionally isolated “islands” under rapid land-use change, there is an urgent need to expand and connect protected areas to prevent further biodiversity loss and improve PAs effect...

Climate and land use change (CLUC) have a far-reaching influence on the ecosystem. Regional ecosystem health, which is the direct and comprehensive reflection of evaluating regional ecosystem quality, has been significantly affected by these changes. However, existing studies mainly focused on the influences of climate or land use change on ecosyst...

Rapid land use/cover changes (LUCC) have triggered severe habitat degradation over recent decades. Existing studies mainly focus on how LUCC per se affects habitat quality, while less attention is paid to the integration of LUCC, socio-economic development and climate change as a land use system, and to investigate their synergistic impacts on habi...

Farmland reforestation can contribute substantially to ecological restoration. Previous studies have extensively examined the ecological effects of farmland reforestation, but few of them have investigated the spatiotemporal responses of broad-scale landscape connectivity to reforestation. By using a typical agro-pastoral ecotone in northern China...

As the dominant area in regional competitions, the urban agglomeration has experienced a dramatic urban land evolution, which has had a significant impact on regional socio-economic development and ecological environment. Conventional simulation models mainly explore the dynamic change of urban land based on the situation of a single city. The urba...

Rapid population migration has been viewed as a critical factor impacting urban network construction and regional sustainable development. The supervision and analysis of population migration are necessary for guiding the optimal allocation of urban resources and for attaining the high efficiency development of region. Currently, the explorations o...

The unsustainable and rapid economy development brings air pollution prominently in China. In the last decade, the haze weather and its influencing mechanism across China have received increasingly attention. Although previous research has extensively focused on the characteristics of aerosols, better understanding of long-term variation in aerosol...

This article examines the driving forces of food security in the areas of the Nam Theun2 Hydropower Project (NT2) in Khamuan, Laos. A questionnaire survey was conducted to collect data from 100 NT2 resettlement households based on the random sampling technique. A linear regression technique was used to identify the influence of household food insec...

As the basic means of agricultural production, cultivated land plays an irreplaceable role in ensuring food security and promoting social and economic development. With the enhancement of urban interactions in space, the land use conflicts between urban development and agricultural protection have been intensified due to the diversified land demand...

Against the background of rapid social and economic reform, urban space systems are unceasingly reconstituted. Population migration, which is a popular social phenomenon, has become an important driving force affecting China's urbanization and regional spatial restructuring. However, the previous studies on urban spatial expansion focused more on s...

A better understanding of regional differences in ecosystem health and its driving factors is conducive to ecosystem management and restoration. Although various studies on ecosystem health have been carried out in different regions, few studies have been devoted to the insightful exploration of the spatial heterogeneity of ecosystem health and its...

Urban agglomeration has become the predominant form of urbanization in China. In this process, spatial interaction evidently played a significant role in promoting the collaborative development of these correlated cities. The traditional urban model’s focus on individual cities should be transformed to an urban system model. In this study, a multi-...

Many studies have been conducted to evaluate the effects of different urban structures on landscape connectivity, and most of them rely on the comparison approach or ex-ante scenario analysis. However, we still lack an ex-post method to capture the consequences of accomplished urban structure shift (from monocentric to polycentric), which is guided...

Maintaining biodiversity is vital for ecological processes. Yet, present static protected areas seem to be inefficient in biodiversity conservation. In this study, we use a set of indicators to evaluate topological features, landscape connectivity and resilience of the current habitat conservation institution, and apply the node addition method to...

China has experienced the most serious habitat degradation. Even though increasing attentions have been brought to this issue, we still lack the understanding of the impact of land use change on habitats. This study proposed an integrated framework with cellular automata (CA) scenario simulation and the “Integrated Valuation of Environmental Servic...

Rural land use development is experiencing a transition stage of socioeconomic and land use development in China. Historic land use transition process and policy interventions have key influence on the applicability of land use allocation solutions in future land use management. Strategic land use allocation is therefore required to possess a good...

In the context of globalization and integration, urban agglomeration gradually becomes the basic unit of regional competitions. In addition to urban agglomeration system, spatial interaction has become a popular topic and a key element for sustainable urban development. This paper investigates the typical agglomeration area in Central China-Wuhan U...

Farmland protection in China is facing multiple pressures, including urbanization, population growth and ecological degradation. Primary farmland zoning was introduced as a basic state policy to ensure national food security. Previous studies about "primary farmland zoning" have always taken the factors as global linear variables, neglecting the sp...

Road network is a corridor system that interacts with surrounding landscapes, and understanding their interaction helps to develop an optimal plan for sustainable transportation and land use. This study investigates the relationships between road centrality and landscape patterns in the Wuhan Metropolitan Area, China. The densities of centrality me...

With the collaborative development of region, spatial interaction has become a hotspot issue in geography research. A scenario analysis model of urban multidimensional interaction was proposed based on geography spatial data field. Where the urban clustering area was viewed as a geography spatial data field. While the intercity spatial interactions...

Hyperspectral remote sensing, known as the state-of-the-art technology in the field of remote sensing, can be used to retrieve physical and chemical properties of surface objects based on the interactions between electromagnetic waves and the objects. Soil organic matter (SOM) is one of the most important parameters used in the assessment of soil f...

Land-use patterns can be considered as a consequence of competitions between different land-use types. How to coordinate the competitions is the key to land-use spatial optimization. In order to improve the ability of existing land-use spatial optimization models for addressing local land-use competitions (the competitions on land units), a loosely...

Alternative land use zoning scenarios provide guidance for sustainable land use controls. This study focused on an ecologically vulnerable catchment on the Loess Plateau in China, proposed a novel land use zoning model, and generated alternative zoning solutions to satisfy the various requirements of land use stakeholders and managers. This model c...

China is facing the pressures of both rapid economic development and environmental protection, and land-use allocation optimization is an important way to manage the conflicts between these pressures and to achieve sustainable development. Optimization of land-use allocation is a nonlinear multiobjective spatial optimization problem, and a purely l...

Land-use allocation is an important way to promote the intensive and economic use of land resources and achieve the goal of sustainable development. It is a complex spatial optimization problem, and heuristic algorithms have been one of the most effective ways to solve it in past studies. However, heuristic algorithms lack the guidance of planning...

A variety of studies have been conducted to assess the impact of farmland preservation policies in China. Most of these studies focus on the use of pure statistical approaches to assess the policy impact. A spatially explicit modeling framework is, however, often required to better assess the policy impact and to help understand the consequence of...

Semiarid loess hilly areas in China are enduring a series of environmental conflicts between urban expansion, cultivated land conservation, soil erosion and water shortage, and require land use allocation to reconcile these environmental conflicts. We argue that the optimized spatial allocation of rural land use can be achieved by a Particle Swarm...

The optimization of land-use spatio-structure is one of the most important areas of land use management; constructing a spatial optimization model that is based on the micro spatial unit in a bottom-up mode plays an important role in coupling the quantity structure and spatial structure effectively. The objective of this research is to develop a la...

In this paper, it firstly establishes the assessment contents on uncertainty of multi-scale representation of point cluster around the process of multi-scale representation of point cluster and its spatial analysis, which includes positional uncertainty and uncertainty of spatial analysis conclusions; the assessment index K and the quantitative mod...

The traditional models of land suitability evaluation were short of comprehensive considering land use with natural, social and economic characters. In this paper, the model of land eco-economic suitability evaluation was constructed based on niche suitability, which is to say that the evaluation is to match the land resource real niche with the de...

Using the optimization result of landscape pattern and land use structure optimization as constraints of CA simulation results, a decision-making model of land use spatial optimization is established coupled the landscape pattern model with cellular automata to realize the land use quantitative and spatial optimization simultaneously. And Huangpi d...

Spatial analysis has being a hot issue in spatial information science. However, its lack of unified principles and systematic technology make its development lag behind applications' needs. This paper introduces field concept to spatial analysis, proposes the theoretical framework of spatial analysis based on data field, constructs land gradation d...

This article discusses the synchronous update mechanism and implementary policy for real-time network of the land survey database based on multi-level distributed heterogeneous structure of "state-province-city-county", and to design and realize the incremental update network system in application to web service model and incremental updating mode...

This paper studies the methods and strategies of the network update of the land survey spatial data based on embedded terminal equipment and server and application of multi-level distributed heterogeneous land spatial database.Web services network model has been used to do the design and implementation work of embedded system of land survey data up...

The indetermination of direction relation is a hot topic for fuzzy GIS researchers. The existing models only study the effects of indetermination of spatial objects, but ignore the uncertainty of direction reference framework. In this paper, first a formalized representation model of indeterminate spatial objects is designed based on quadruple (x,...

Uncertainty management has been considered essential for physical world application especially uncertain spatial relation representation and reasoning for Geographic Information System applications. In this paper a unified space partition and identical operator for uncertain topological and directional relation representation and reasoning are prop...

Niche is proposed as the quantitative indicator of land resource optimal allocation, and the land use niches are designed including natural niche, social niche, economic niche and synthesis niche, meanwhile the methods of quantitative survey are worked out. The model of land resource optimal allocation model is constructed based on the land use nic...

Firstly a formalized represent model of indeterminate geographical objects is designed based on the quartuple (x, y, A, μ). Then a direction reference framework is constructed by revising the cone method for uncertain direction relation presentation, where the partition of direction sections is smoothly and continually, and the two neighboring sect...

By extending the traditional land suitability evaluation from natural conditions evaluation to land eco-economic comprehensive suitability evaluation, the evaluation factor system is created from three levels, which are regional level, unit level and inter-unit level. Meanwhile the quantitative criterion and methods are developed from four classes:...

Two vital shortcomings of existed topological relation models for indeterminate topological relation description are summarized firstly. In order to get them over, a novel topological relation model for indeterminate geographical object is constructed based on fuzzy Close-degree analysis, where the five familiar topological relation predicates of R...

On the basis of construction strategy of PSE with Web service, the framework of land suitability assessment PSE is created, and a prototype of land suitability assessment information system is designed and developed partially. The land suitability of Huangpi District, Wuhan City is taken as an case to test the prototype system.

Based on deeply analysis of the flaws in the existed topological relation model for discrete space, the authors adapted the existed model of RCC5 for discrete spatial objects from two aspects. Firstly, we fuzzed the discrete crisp region with k-neighborhood constructed by Voronoi diagram. Secondly, a topology relation model was constructed with the...

Earlier researches on modeling indeterminate geographic object have developed on twofold separately; one is the positional imprecision and the other is the thematic vagueness. But there are multitude of entities with both positional imprecision and thematic vagueness. So we design a formalized description model based on the quartuple (x, y, A, D ),...

This paper studies landuse change model based on cellar automata of decision-making with grey situation. the urban land use dynamic change model is constructed based on decision-making with gray situation and hierarchical method as well as CA, in which the hierarchical method is used for dealing with the importance of among objects and factors. The...

The topological relationship of disjoint is ubiquitous in physical world, while the traditional topological relationship models do not take more considerations about it. Point set topology is exhaustive for topological relation set and rational for topological computation; nevertheless, it is not good at spatial reasoning. Although RCC5 or RCC8 is...