Integrating Future Land Use Scenarios to Evaluate the Spatio-Temporal Dynamics of Landscape Ecological Security

The various ecological processes of human beings are not only restricted by the landscape pattern on the regional scale but also affect the local and regional landscape together with global climate change. To date, most of the research on ecological security is based on the pressure-state-response (PSR) model, while there were a few studies based on the landscape ecology model approach. In addition, there has been little literature focus on the dynamic change process of ecological security, especially the simulation and prediction of the future development trend of ecological security. The purpose of this research is to establish a landscape ecological security evaluation method based on grid division, be aimed at breaking the inherent drawbacks of the administrative region as a unit mode approach, anticipated to better reflect the landscape ecological security status of the study area. A complex framework was constructed by integrating random forest algorithm, Fishnet model, landscape ecology model, and CA-Markov model. Multitemporal remote sensing data were selected as a data source, and land use maps of the study area were obtained through the random forest machine learning algorithm firstly. And then, the study area is divided into 307 grids of 2 km × 2 km using the Fishnet model. Next, the landscape disturbance index, landscape vulnerability index, and landscape loss index are used on the grid scale to establish a landscape ecological security evaluation model. Finally, ecological security assessment of Zhengzhou city was carried out, and the distribution map of the landscape ecological status in 1986, 1996, 2006, 2016, and predicted for 2026 was obtained. The results of the study showed that, as time goes by, the areas with high ecological safety gradually decrease. It is predicted that by 2026, the ecological security level of Zhengzhou will be dominated by lower ecological security areas. The research results can provide basic information and decision support for government agencies and land use planners to ensure responsible and sustainable development of the urban environment and ecology.

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Landscape change patterns at three stages of the construction and operation of the TGP

Scientific Reports ◽

10.1038/s41598-021-87732-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Ruikang Li ◽

Yangbing Li ◽

Bo Li ◽

Dianji Fu

Keyword(s):

Landscape Pattern ◽

Landscape Change ◽

Ecological Security ◽

Three Gorges ◽

Temporal Characteristics ◽

Landscape Type ◽

The Three Gorges ◽

Landscape Types ◽

Landscape Ecological ◽

Landscape Ecological Security

AbstractAnalyses of landscape change patterns that are based on elevation and slope can not only provide reasonable interpretations of landscape patterns but can also help to reveal evolutionary laws. However, landscape change patterns and their model in different landforms of the typical watershed in the Three Gorges Reservoir Area (TGRA) has not been quantified and assessed effectively. As a complex geographical unit, the ecological environment in the middle reach of the Yangtze River has experienced great changes due to the construction of the Three Gorges Project (TGP) and its associated human activities. Here, based mainly on a digital elevation model (DEM) and remotely sensed images from 1986, 2000, 2010, and 2017 and by using GIS technology, speeds/ trends of landscape change, the index of landscape type change intensity, landscape pattern indices, and landscape ecological security index, the spatial and temporal evolution characteristics of different elevations, slopes, and buffer landscape types were analyzed in typical watersheds, as well as an evolutionary model of the landscape pattern. The results indicated that (1) the landscape types along with the land classification and buffer zone that were influenced by the TGR construction have undergone a phased change, with the period 2000–2010 being the most dramatic period of landscape evolution during the impoundment period; (2) landscape type shifts from human-dominated farmland to nature-driven forestland and shrub-land as elevations, slopes and buffer distances increased. The landscape has shifted from diversity to relative homogeneity; (3) land types and buffer zones played essential roles in the landscape pattern index, which is reflected in the differences in landscape type indices for spatial extension and temporal characteristics. The results of this paper illustrate the spatial–temporal characteristics of various landscape types at three distinct stages in the construction of the TGR. These findings indicate that the landscape ecological security of the watershed is improving year by year. The follow-up development of the TGRA needs to consider the landscape change patterns of different landforms.

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Land-Use Dynamic Simulator (LUDAS): A multi-agent system model for simulating spatio-temporal dynamics of coupled human–landscape system. I. Structure and theoretical specification

Ecological Informatics ◽

10.1016/j.ecoinf.2008.04.003 ◽

2008 ◽

Vol 3 (2) ◽

pp. 135-153 ◽

Cited By ~ 101

Author(s):

Quang Bao Le ◽

Soo Jin Park ◽

Paul L.G. Vlek ◽

Armin B. Cremers

Keyword(s):

Land Use ◽

Temporal Dynamics ◽

System Model ◽

Multi Agent System ◽

Agent System ◽

Dynamic Simulator ◽

Multi Agent ◽

Landscape System ◽

Spatio Temporal ◽

Human Landscape

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Landscape Ecological Security Construction and Evaluation Research Based on GIS and MCR Model

Proceedings of 2016 International Conference on Modeling, Simulation and Optimization Technologies and Applications (MSOTA2016) ◽

10.2991/msota-16.2016.14 ◽

2016 ◽

Author(s):

Wensheng Deng ◽

Cuizhao Zhao ◽

Guiying Sun

Keyword(s):

Evaluation Research ◽

Ecological Security ◽

Landscape Ecological ◽

Landscape Ecological Security ◽

Mcr Model

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Geo-Informatics for Land Use and Biodiversity Studies

Land Use, Climate Change and Biodiversity Modeling ◽

10.4018/978-1-60960-619-0.ch003 ◽

2011 ◽

pp. 52-77

Author(s):

P. K. Joshi ◽

Neena Priyanka

Keyword(s):

Land Use ◽

Temporal Dynamics ◽

Mitigation Measures ◽

Conservation Strategies ◽

Ecological Processes ◽

Holistic Understanding ◽

Global Positioning ◽

Geospatial Tools ◽

Spatio Temporal ◽

Impact On Biodiversity

The dynamics of land use/land cover (LU/LC) is a manifestation of the cyclic correlation among the kind and magnitude of causes, impacts, responses and resulting ecological processes of the ecosystem. Thus, the holistic understanding of the complex mechanisms that control LU/LC requires synergetic adoption of measurement approaches, addressing issues, and identifying drivers of change and state of art technologies for mitigation measures. As the spatio-temporal heterogeneity of the LU/LC increases, its impact on biodiversity becomes even more difficult to anticipate. Thus, in order to understand the spatio-temporal dynamics of change in landscape and its relationship to biodiversity, it is necessary to reliably identify and quantify the indicators of change. In addition, it is also important to have better understanding of the technologies and techniques that serve as complimentary tool for land mitigation and conservation planning. Against this background, the chapter aims to synthesize LU/LC studies worldwide and their impacts on biodiversity. This chapter explores identification and analysis of key natural, socio-economic and regulatory drivers for LU/LC. Finally, it attempts to collate some LU/LC studies involving usage of geospatial tools, such as satellite remote sensing, Geographic Information System (GIS), Global Positioning System (GPS), and integrative tools, besides conventional approaches that could assist decision makers, land managers, stakeholders and researchers in better management and formulation of conservation strategies based on scientific grounds.

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