A township-level assessment of forest fragmentation using morphological spatial pattern analysis in Qujing, Yunnan Province, China

2021 ◽  
Author(s):  
Xiao-yuan Huang ◽  
Yuan-hui Ye ◽  
Zhuo-ya Zhang ◽  
Jiang-xia Ye ◽  
Jie Gao ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Forest Fragmentation ◽  
Yunnan Province ◽  
Pattern Analysis ◽  
Spatial Pattern Analysis ◽  
Morphological Spatial Pattern Analysis

scholarly journals Linking Morphological Spatial Pattern Analysis and Circuit Theory to Identify Ecological Security Pattern in the Loess Plateau: Taking Shuozhou City as an Example

Land ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 907
Author(s):  
Ronglei Yang ◽  
Zhongke Bai ◽  
Zeyu Shi
Keyword(s):  
Spatial Pattern ◽  
Loess Plateau ◽  
Pattern Analysis ◽  
Urban Expansion ◽  
Circuit Theory ◽  
Spatial Pattern Analysis ◽  
Ecological Security ◽  
The Loess Plateau ◽  
Unused Land ◽  
Morphological Spatial Pattern Analysis

Located in an ecologically fragile area in China’s eastern part of the Loess Plateau, Shuozhou City has faced environmental challenges imposed by frequent urban expansion and mining activities in recent years. As ecological security patterns (ESP) identification and optimization are significant to regional biodiversity and ecosystem services, this study combined morphological spatial pattern analysis (MSPA) and circuit theory to construct and optimize regional ESP. Results show the number and area of ecological sources in the study area decreased from 21 to 20 between 2010 and 2017. The total area of ecological sources fell from 1923.35 km2 to 1869.37 km2, with their proportion in the study area dropped from 18.14% to 17.64%. From 2010 to 2017, the number of obstacles increases from 63 to 80, mainly consisting of farmland, unused land, transportation land, and construction land. The area of obstacles reached 10.17 km2 in 2017. A framework of “one protection area, two regulation areas, and three restoration areas” is proposed to optimize the ESP of the study zone. This study explored a combination of ESP analysis tools and focused on improving regional ecosystem service and biodiversity. It will support local urban planning and provide a reference for similar studies in resource-based cities.

scholarly journals Landscape dynamics of Paspalum quadrifarium grasslands analyzed by Morphological Spatial Pattern Analysis (MSPA)

2018 ◽  
Author(s):  
Marcelo L Gandini ◽  
Bruno D Lara ◽  
Laura Beatriz Moreno ◽  
Maria A Cañibano ◽  
Patricia A Gandini
Keyword(s):  
Spatial Pattern ◽  
Management Practices ◽  
Pattern Analysis ◽  
Central Area ◽  
Wide Distribution ◽  
Spatial Pattern Analysis ◽  
Percentage Increase ◽  
Coverage Area ◽  
Binary Images ◽  
Morphological Spatial Pattern Analysis

Background. Despite its wide distribution worldwide, only 4.6% of temperate grasslands are included within systems of protected areas. In Argentina, this situation is even more alarming: only 1.05% is protected. The study area (central area of the southern Salado River basin) has a large extent of grasslands of Paspalum quadrifarium (Pq) which has been target since the last century of a variety of agricultural management practices including fire burning for cattle grazing. Methods. Binary images of presence-absence data of Pq from a 42-year (1974-2016) land cover change study were used as base data. MSPA (Morphological Spatial Pattern Analysis) and Network Analysis were performed to the data using Guidos Toolbox for the estimation of habitat and connectivity dynamics of the Pq patches (fragments). Results. A loss of the coverage area and habitat nuclei of this grassland was observed between the beginning and the end of the study period. A drastic reduction in connectivity was also evident in resulting maps. The number of large Pq grassland fragments (> 50 ha) decreased during the study period, and fragmentation measured as number of components (patches) was higher at the end of study period. The Pq pajonal nuclei had their minimum representativeness in 2000, and recovered slightly in 2011, but with a significant percentage increase of the small patches (=islets) and linear elements as bridges and branches. Large corridors (mainly edge of roads) could be observed at the end of study period, while the total connectivity of the landscape pattern drops abruptly. Discussion. The habitat reduction could have an impact on the ecosystem functioning and the mobility of some species of native fauna. The connecting elements of the landscape were maintained and/or recovered in percentage in 2011 and 2016. This fact, although favoring the dispersion of the present diversity in the habitat nuclei could cause degradation by an edge effect. On the methodological side, the use of a proved tool as Guidos Toolbox for evaluating forest fragmentation could also be useful for monitoring dynamics of a grassland-habitat fragmentation.

scholarly journals Integrating morphological spatial pattern analysis and the minimal cumulative resistance model to optimize urban ecological networks: a case study in Shenzhen City, China

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Yang-Yang Li ◽  
Yu-Zhe Zhang ◽  
Zhi-Yun Jiang ◽  
Cheng-Xuan Guo ◽  
Ming-Yue Zhao ◽  
...  
Keyword(s):  
Spatial Pattern ◽  
Pattern Analysis ◽  
Ecological Networks ◽  
Spatial Pattern Analysis ◽  
Landscape Index ◽  
Stepping Stones ◽  
Index Method ◽  
Source Areas ◽  
Morphological Spatial Pattern Analysis ◽  
Mcr Model

Abstract Background With the increasing fragmentation of landscape induced by rapid urbanization, the construction of ecological networks is of great significance to alleviate the degradation of urban habitats and protect natural environments. However, there is considerable uncertainty when constructing ecological networks, especially the different approaches to selecting ecological sources. We used the southern Chinese city of Shenzhen as a study area to construct and optimize ecological networks using a coupling approach. Ecological source areas were extracted using morphological spatial pattern analysis (MSPA) and the landscape index method. Ecological networks were constructed using the minimal cumulative resistance (MCR) model and the gravity model. Stepping stones and ecological fault points were added in corridors to optimize the ecological network. Results Ten core areas with maximum importance patch values were extracted by the landscape index method as ecological source areas according to MSPA, after which corridors between ecological sources were constructed based on the MCR model. The constructed ecological networks were optimized using 35 stepping stones and 17 ecological fault points. The optimized ecological networks included 11 important corridors, 34 general corridors, and seven potential corridors. The results of corridor landscape-type analysis showed that a suitable ecological corridor is 60 to 200 m wide. Conclusions Overall, our results imply that ecological source areas can be identified virtually, and that ecological networks can be significantly optimized by combining MSPA and MCR models. These results provide a methodological reference for constructing ecological networks, and they will be useful for urban planning and biodiversity protection in Shenzhen and other similar regions around the world.

scholarly journals Landscape dynamics of Paspalum quadrifarium grasslands analyzed by Morphological Spatial Pattern Analysis (MSPA)

2018 ◽  
Author(s):  
Marcelo L Gandini ◽  
Bruno D Lara ◽  
Laura Beatriz Moreno ◽  
Maria A Cañibano ◽  
Patricia A Gandini
Keyword(s):  
Spatial Pattern ◽  
Management Practices ◽  
Pattern Analysis ◽  
Central Area ◽  
Wide Distribution ◽  
Spatial Pattern Analysis ◽  
Percentage Increase ◽  
Coverage Area ◽  
Binary Images ◽  
Morphological Spatial Pattern Analysis

Background. Despite its wide distribution worldwide, only 4.6% of temperate grasslands are included within systems of protected areas. In Argentina, this situation is even more alarming: only 1.05% is protected. The study area (central area of the southern Salado River basin) has a large extent of grasslands of Paspalum quadrifarium (Pq) which has been target since the last century of a variety of agricultural management practices including fire burning for cattle grazing. Methods. Binary images of presence-absence data of Pq from a 42-year (1974-2016) land cover change study were used as base data. MSPA (Morphological Spatial Pattern Analysis) and Network Analysis were performed to the data using Guidos Toolbox for the estimation of habitat and connectivity dynamics of the Pq patches (fragments). Results. A loss of the coverage area and habitat nuclei of this grassland was observed between the beginning and the end of the study period. A drastic reduction in connectivity was also evident in resulting maps. The number of large Pq grassland fragments (> 50 ha) decreased during the study period, and fragmentation measured as number of components (patches) was higher at the end of study period. The Pq pajonal nuclei had their minimum representativeness in 2000, and recovered slightly in 2011, but with a significant percentage increase of the small patches (=islets) and linear elements as bridges and branches. Large corridors (mainly edge of roads) could be observed at the end of study period, while the total connectivity of the landscape pattern drops abruptly. Discussion. The habitat reduction could have an impact on the ecosystem functioning and the mobility of some species of native fauna. The connecting elements of the landscape were maintained and/or recovered in percentage in 2011 and 2016. This fact, although favoring the dispersion of the present diversity in the habitat nuclei could cause degradation by an edge effect. On the methodological side, the use of a proved tool as Guidos Toolbox for evaluating forest fragmentation could also be useful for monitoring dynamics of a grassland-habitat fragmentation.

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