佛山市高明区生态安全格局和建设用地扩展预案

The unprecedented regional urbanization has brought great pressure on the ecological environment. Building an ecological security pattern and guide regional land and space development is an important technique to ensure regional ecological security and stability to achieve sustainable development. In this study, the Pingtan Island of China and the Durban city of South Africa were chosen as case study area for a comparative study of different scales. The importance of ecosystem services and ecological sensitivity were evaluated, respectively. The core area of landscape which is vital for ecological function maintenance was extracted by morphological spatial pattern analysis (MSPA) and landscape connectivity analysis. Furthermore, the ecological sources were determined by combining the results of ecological protection redline delimitation and core area landscape extraction. The potential ecological corridors were identified based on the minimum cumulative resistance model, and the ecological security pattern of study areas was constructed. The results showed that the ecological protection redline areas of Pingtan and Durban were 42.78 km2 and 389.07 km2, respectively, which were mainly distributed in mountainous areas with good habitat quality. Pingtan ecological security pattern is composed of 15 ecological sources, 16 ecological corridors, 10 stepping stone patches and 15 ecological obstacle points. The total length of corridors is 112.23 km, which is radially distributed in the form of “one ring, three belts”. The ecological security pattern of Durban is composed of 15 ecological sources, 17 ecological corridors, 11 stepping stone patches and 18 ecological obstacle points. The total length of corridors is 274.25 km, which is radially distributed in the form of “two rings and three belts”. The research results can provide an important reference for the land space construction planning and ecological restoration projects in Pingtan and Durban.

Ecological security is an overall reflection of the ecological integrity and health level of natural semi-natural ecosystems. The study obtained quantitative results of ecological land-use variety by using spatial transfer matrix, based on status maps of Anqing City in 2005 and 2017. We combined the superposition analysis of ecological sensitivity with ecological disturbance evaluation to judge the strategic nodes and corridors of core protection type, including maintenance promotion type and potential supplementary type in the study area. In addition, we introduced the model of minimum cumulative resistance to construct the ecological security pattern, superimposing with the results of ecological land use. According to the trend of change over the past decade, the study has the great significance to the ecological security pattern so that we can effectively guide to take management strategy for security landscape.

Disordered urban expansion has encroached on a large amount of ecological land, resulting in the steady degradation of urban ecology, which has an adverse effect on the sustainable development of the region. An ecological security pattern can effectively control urban expansion, and it is of great significance to balance urban development and ecological protection. In order to analyze the impact of ecological security patterns on urban expansion, Hangzhou was taken as an example, the CA-Markov model and FLUS model were used to simulate the urban expansion pattern in 2030 under the natural development scenario and the ecological security scenario. The results showed that (1) the ecological source area in the study area is 630.90 km2 and was mainly distributed in the western mountainous area. There are 14 ecological corridors, primarily composed of valleys and rivers. Ecological nodes are mainly distributed on the north and south sides of the main urban area. (2) From 2000 to 2018, the annual increase index (AI) of construction land decreased in the northeast and southeast directions but increased in the northwest and southwest directions, and in the northeast direction the value was always the highest. Except for the southwest direction, the average annual growth rate (AGR) of construction land in the other directions decreased. At a distance from the city center of 30 km, AI was relatively higher and was increasing, while AGR was declining. At a distance of 30–45 km, both AI and AGR were increasing, indicating that the focus of construction land was moving outwards. (3) From 2018 to 2030, under both natural development scenario and ecological security scenario, construction land would keep expanding, but the construction land area, proportion, AI, and AGR of the latter would both be smaller than the former, indicating that the ecological security pattern can effectively curb urban expansion. Because of a large amount area of ecological sources, the expansion of construction land in the southwest direction would be constrained, especially under the ecological security scenario. The methods and results of this study can provide theoretical and application references for urban planning and green development in metropolises.

Spatial differentiation of ecological security and differentiated management of ecological conservation in the Pearl River Delta, China

Identification of key ecological restoration areas based on ecological security patterns and territorial spatial ecological restoration zoning: A case study of the middle and lower reaches of the Yellow River in China

The effects of shielding the tips of airfoils

In the current context of global urbanization and climate change, balancing ecological protection and economic development is a particular challenge in the optimal allocation of regional land use. Here, we propose a research framework for the optimal allocation of land use that considers the regional ecological security pattern (ESP) and allocates space for land-use activities to areas with low ecological risk. Taking Baicheng, China as our study area, ecological sources were first identified by integrating their ecological importance and landscape connectivity, and ecological corridors and functional zones were extracted using the minimum cumulative resistance difference and circuit theory. The ecological source areas were then taken as limiting factors, and four future scenarios were established for 2030 using the parcel-level land-use simulator (PLUS) model. The ecological corridors and functional zones served as areas having restricted ecological conditions, and the four future scenarios were coupled into the corresponding functional zones to optimize the land-use structure in 2030. The results indicate that under the coupled ESP–PLUS scenario, the spatial distribution and structure of land use in Baicheng balance the needs of ecological source area protection and economic development, resulting in greater sustainability. By 2030, the cultivated land area will steadily increase, but attention will also be given to the protection of ecological land (e.g., woodland and marshland), aligning with current policy planning demands. An analysis of the landscape indices for each future scenario found all scenarios to be effective in reducing negative changes in landscape patterns. These findings provide a novel perspective for the rational allocation of future land resources and the optimization of land-use structures.

With the continuous expansion of human activities, the habitats of many species are confronted with serious destruction and threats, leading to increasingly prominent ecological security issues. Therefore, it is crucial to establish an ecological security pattern that takes species habitats into consideration, so as to protect biodiversity and maintain ecological balance. Poyang Lake, as a paradise for wildlife, serves as the habitat and breeding ground for many bird species, fish, and other aquatic organisms. Taking the research scope of the peripheral region of Poyang Lake as an example, we produced the land use data for the years 2000, 2010, and 2020 on the basis of the Google Earth Engine platform and the random forest classification method. By integrating morphological spatial pattern analysis, landscape pattern indices, landscape connectivity indices, circuit theory, and long-term land use data, we developed a long-term ecological security pattern for the peripheral region of Poyang Lake from 2000 to 2020, which takes into accounts habitats for various species including fish and birds. This dataset contains various types of data, including innovative elements. In terms of data quality control and evaluation, strict quality control and evaluation processes were conducted on the data used and the predicted results, ensuring the accuracy and credibility of the data and providing effective data support and references for relevant research. The dataset not only comprises indicator data for constructing an ecological security pattern to protect species habitats but also includes historical and predicted ecological security pattern data for the peripheral region of Poyang Lake. It can provide important scientific data support and serve as references for future research on species protection and ecological security patterns in the peripheral region of the Poyang Lake.

Modelling regional ecological security pattern and restoration priorities after long-term intensive open-pit coal mining

Ecological security assessment and pattern construction in arid and semi-arid areas: A case study of the Hexi Region, NW China

Coordinating ecosystem service supply and demand equilibrium and utilizing machine learning to dynamically construct an ecological security pattern (ESP) can help better understand the impact of urban development on ecological processes, which can be used as a theoretical reference in coupling economic growth and environmental protection. Here, the ESP of the Changsha–Zhuzhou–Xiangtan urban agglomeration was constructed, which made use of the Bayesian network model to dynamically identify the ecological sources. The ecological corridor and ecological strategy points were identified using the minimum cumulative resistance model and circuit theory. The ESP was constructed by combining seven ecological sources, “two horizontal and three vertical” ecological corridors, and 37 ecological strategy points. Our results found spatial decoupling between the supply and demand of ecosystem services (ES) and the degradation in areas with high demand for ES. The ecological sources and ecological corridors of the urban agglomeration were mainly situated in forestlands and water areas. The terrestrial ecological corridor was distributed along the outer periphery of the urban agglomeration, while the aquatic ecological corridor ran from north to south throughout the entire region. The ecological strategic points were mainly concentrated along the boundaries of the built-up area and the intersection between construction land and ecological land. Finally, the ecological sources were found primarily on existing ecological protection zones, which supports the usefulness of machine learning in predicting ecological sources and may provide new insights in developing urban ESP.

Constructing regional ecological security pattern and solving environmental problems are the key to realize regional sustainable development. Taking Shandong Province as the study area, this paper establishes the ecological source and establishes the ecological security pattern by using the least resistance model. Identifying ecological source and building ecological security pattern according to ecological red line area can not only improve the scientificity of practice, but also provide technical support for delimiting regional ecological red line and building ecological security pattern. Constructing regional ecological security pattern and solving environmental problems are the key to realize regional sustainable development. Taking Shandong Province as the study area, this paper establishes the ecological source and establishes the ecological security pattern by using the least resistance model. Identifying ecological source and building ecological security pattern according to ecological red line area can not only improve the scientificity of practice, but also provide technical support for delimiting regional ecological red line and building ecological security pattern.

The construction of an ecological security pattern (ESP) is one of the basic methods to protect regional ecological security and enhance people’s well-being. In the case of Anhui province, located in the Yangtze River Delta region of China, regional ecological sources were assessed and recognized in terms of ecosystem services, and regional ESP was then constructed based on circuit theory. Current density was applied to analyze the significance of patches and corridors and recognize sticking points, and thereby strategies were introduced to optimize regional ESP. Results of ecosystem services function assessment showed that there were 47 ecological patches, 107 ecological corridors, 16 pinch points, and six sticking points in the ESP of Anhui province. The watershed of the Yangtze and Huai rivers divides the ESP of the northern and southern Anhui, which has huge landscape spatial heterogeneity. Areas with relatively good ecological resources were basically located between Dabie Mountain area in the west and the low hilly area in the south of Anhui, with mostly woodland and farmland as ecological sources. However, cities in the northern Anhui, also in the north of the watershed of the Yangtze and Huai rivers, face severe situations in terms of environmental protection. This study conducted spatial analyses on ESP with different thresholds and proposed to classify different ESPs according to ecological control. This helps to alleviate the contradiction between economic development and environmental protection, and improve the supply capacity of regional ecosystem services, in order to satisfy the regional demand for ecosystem services. Meanwhile, this study offers more methods to construct regional ESP and introduces targeted measures to improve connectivity, which is of practical guidance for the connectivity and optimization of ecological patterns.

Optimizing Ecological security patterns (ESPs) is critical for advancing territorial spatial restoration and fostering sustainable regional development. While research on ESPs’ construction has grown significantly, key challenges persist, particularly in the accurate identification of priority conservation areas and the integration of socioeconomic development with ecological conservation. To address these challenges, this study selects Jiangsu Province as a representative case. We move beyond single-factor assessments by combining ecosystem service importance evaluation with a multi-factor ecological sensitivity analysis (including water pollution, soil erosion, air pollution, and anthropogenic pressure). A comprehensive ecological resistance surface is then developed, incorporating both natural and anthropogenic disturbance factors, to evaluate spatial patterns of ecological security. Utilizing the Minimum Cumulative Resistance (MCR) model, we delineate ecological corridors and ultimately construct the ESPs by synthesizing ecological sources and corridors. Key results include: Jiangsu’s ESPs comprises 33 ecological patches (total area: 14,622.46 km2, 13.71% of the study region), predominantly composed of water bodies, wetlands, and cultivated land. Thirteen ecological corridors (total length: 1920.38 km) primarily traverse cultivated land, construction land, and water bodies. The optimized ESPs strategy termed “Two Cores, Two Barriers, Three Belts, Multiple Corridors” offers a concrete spatial blueprint. The findings provide effective scientific reference for assessing and managing regional ecological security trends.

PDF HTML阅读 XML下载 导出引用 引用提醒 基于生态系统服务价值损益的生态安全格局演变分析——以辽宁沿海瓦房店市为例 DOI: 10.5846/stxb201809071916 作者: 作者单位: 辽宁师范大学海洋经济与可持续发展研究中心,辽宁师范大学城市与环境学院,辽宁师范大学海洋经济与可持续发展研究中心,辽宁师范大学海洋经济与可持续发展研究中心,辽宁师范大学城市与环境学院 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然科学基金项目（41571122）；辽宁省教育厅项目（H201783631，WQ2019020）；辽宁省自然科学基金（20180551194）；辽宁省社会科学规划基金项目（L17CJY003）；辽宁省社科联2019经济社会发展立项项目（2019lslktjd-014）；辽宁师范大学校博士启动（BS2018L007） The evolution of ecological security pattern based on the profit and loss analysis of ecosystem services: taking Wafangdian County as a case Author: Affiliation: Center for Studies of Marine Economy and Sustainable Development of Liaoning Normal University,,Center for Studies of Marine Economy and Sustainable Development of Liaoning Normal University,, Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:生态系统服务是区域生态安全的底线，科学评估其价值变化是合理规划区域土地利用和构建生态安全格局的重要基础，既有研究尚未综合评估多种生态系统服务来判定区域生态基底，目前开展的静态评价也难以反映区域生态安全格局动态变化过程。以辽宁沿海地区——瓦房店市为例，综合运用CASA、RUSLE等模型，并结合生态经济法对2000年和2014年生态系统服务价值进行了科学评估，并依据评估结果构建研究区两期生态安全格局。结果表明：①14年间，除营养物质循环变化不明显外，其余各项生态系统服务价值均呈现不同幅度的损失，其中以水源涵养价值下降趋势最为明显。各土地利用类型来看，林地生态系统服务价值损失达8.74亿元，占损失总量的40%，为各地类之首；②两期单位面积生态系统服务价值均呈现出水域（含海域）高于陆地，山地高于平地的空间分布，且这种不均匀分布趋势在2014年更为明显；③两期生态源地面积分别为1111.40 km2和356.96 km2，生态廊道总长度分别为136.63 km和231.43 km，呈环状分布于源地之间的生态系统服务价值高值谷内。生态系统服务价值的损益情况可对区域生态安全格局构建产生重要影响，研究结果可为瓦房店市城市开发边界与生态保护红线划定提供科学参考。 Abstract:Ecosystem services are the baseline of regional ecological security. Scientific assessment of their value changes is a basis for rationally planning of the regional land use and constructing ecological security pattern. The existing studies did not comprehensively evaluate various ecosystem services to determine regional ecological basements. The current static assessments failed to reflect the dynamic process of regional ecological security patterns. Hence, using CASA, RUSLE, and other models, as well as the ecological economic method, we evaluated the ecosystem service value in Wafangdian County, Liaoning coastal area in 2000-2014. Then, the two-stage ecological security pattern was constructed based on the scientific assessment. The results are as follows:①during the 14 years, except for the inconspicuous change of nutrient recycling value, the other ecosystem service values have showed different degrees of loss, especially for water source conservation value with the worst decline of 44%. In terms of land use type, the value of forestland ecosystem services lost 874 million Yuan, up to 40% of the total loss. ② For the ecosystem services per unit value of the study area in the two periods, water area (including sea) was higher than land, but mountain was higher than flatlands. This uneven spatial distribution was more obvious in 2014. ③ The ecological source areas in 2000 and 2014 were 1111.40 km2 and 356.96 km2, respectively. The total length of the corridors were 136.63 km and 231.43 km. The ring-like corridors were distributed in the high value valley of ecosystem service value among the source areas. The profit and loss of ecosystem service value have an impact on the construction of the regional ecological security pattern. The results can provide a scientific guideline for the delineation of urban development boundary and ecological protection red line in Wafangdian. 参考文献 相似文献 引证文献