scholarly journals The InVEST Habitat Quality Model Associated with Land Use/Cover Changes: A Qualitative Case Study of the Winike Watershed in the Omo-Gibe Basin, Southwest Ethiopia

2020 ◽  
Vol 12 (7) ◽  
pp. 1103 ◽  
Author(s):  
Abreham Berta Aneseyee ◽  
Tomasz Noszczyk ◽  
Teshome Soromessa ◽  
Eyasu Elias
Keyword(s):  
Land Use ◽  
Habitat Quality ◽  
Global Economy ◽  
Habitat Degradation ◽  
Remote Sensing Data ◽  
Impact Factors ◽  
Conservation Strategies ◽  
Anthropogenic Pressure ◽  
Quality Model ◽  
Land Use Types

The contribution of biodiversity to the global economy, human survival, and welfare has been increasing significantly, but the anthropogenic pressure as a threat to the pristine habitat has followed. This study aims to identify habitat suitability, analyze the change in habitat quality from 1988 to 2018, and to investigate the correlation between impact factors and habitat quality. The InVEST habitat quality model was used to analyze the spatiotemporal change in habitat quality in individual land-use types in the Winike watershed. Remote sensing data were used to analyze the land use/land cover changes. Nine threat sources, their maximum distance of impact, mode of decay, and sensitivity to threats were also estimated for each land-use cover type. The analysis illustrates that habitat degradation in the watershed was continuously increasing over the last three decades (1988 to 2018). Each threat impact factor and habitat sensitivity have increased for the last 30 years. The most contributing factor of habitat degradation was the 25.41% agricultural expansion in 2018. Population density, land-use intensity, elevation, and slope were significantly correlated with the distribution of habitat quality. Habitat quality degradation in the watershed during the past three decades suggested that the conservation strategies applied in the watershed ecosystem were not effective. Therefore, this study helps decision makers, particularly regarding the lack of data on biodiversity. It further looks into the conflict between economic development and conservation of biodiversity.

scholarly journals Assessing the Impacts of Urban Expansion on Habitat Quality by Combining the Concepts of Land Use, Landscape, and Habitat in Two Urban Agglomerations in China

2020 ◽  
Vol 12 (11) ◽  
pp. 4346 ◽  
Author(s):  
Huina Wang ◽  
Lina Tang ◽  
Quanyi Qiu ◽  
Huaxiang Chen
Keyword(s):  
Land Use ◽  
Habitat Quality ◽  
Habitat Degradation ◽  
Early Stage ◽  
Urban Expansion ◽  
Land Use Changes ◽  
Yangtze River Delta ◽  
Spatiotemporal Variability ◽  
Quality Model ◽  
Urban Agglomerations

Understanding the spatiotemporal variability of habitat quality as a function of land-use changes is important for expanding scientific knowledge of ecological conservation. In this study, the impacts of land-use change on habitat quality were assessed in two urban agglomerations in China at different stages of development, namely (1) the Yangtze River Delta Urban Agglomeration (YRDUA), which has reached the middle and late stage of urbanization, and (2) the Golden Triangle of Southern Fujian (GTSF), which has reached the middle and early stage. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) habitat quality model was applied to determine the habitat quality and the degree of habitat degradation in these two agglomerations. Overall, the habitat quality in the YRDUA was found to be clearly inferior to that in the GTSF. In the GTSF, more than 65% of the habitat was of good or excellent quality, whereas in the YRDUA, less than 45% of the habitat reached this quality. By combining the concepts of land use, landscape, and habitat, the boundary of degradation and the general increase in habitat quality from 2000 to 2015 were found to be mainly related to the landform, the dominant landscape, and the concentration of non-habitat areas. Additionally, the type, distribution, and fragmentation of the dominant habitat were shown to play important roles in habitat quality. Moreover, changes in industrial composition over time were demonstrated to be critical drivers of changes in areas of construction land.

scholarly journals A Comparative Analysis of Spatial Data and Land Use/Land Cover Classification in Urbanized Areas and Areas Subjected to Anthropogenic Pressure for the Example of Poland

2021 ◽  
Vol 13 (6) ◽  
pp. 3070
Author(s):  
Patrycja Szarek-Iwaniuk
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Classification ◽  
Classification Systems ◽  
Anthropogenic Pressure ◽  
Land Use Land Cover ◽  
Land Use Classification ◽  
Land Cover Data ◽  
Spatial Changes ◽  
Land Use Types

Urbanization processes are some of the key drivers of spatial changes which shape and influence land use and land cover. The aim of sustainable land use policies is to preserve and manage existing resources for present and future generations. Increasing access to information about land use and land cover has led to the emergence of new sources of data and various classification systems for evaluating land use and spatial changes. A single globally recognized land use classification system has not been developed to date, and various sources of land-use/land-cover data exist around the world. As a result, data from different systems may be difficult to interpret and evaluate in comparative analyses. The aims of this study were to compare land-use/land-cover data and selected land use classification systems, and to determine the influence of selected classification systems and spatial datasets on analyses of land-use structure in the examined area. The results of the study provide information about the existing land-use/land-cover databases, revealing that spatial databases and land use and land cover classification systems contain many equivalent land-use types, but also differ in various respects, such as the level of detail, data validity, availability, number of land-use types, and the applied nomenclature.

scholarly journals GEOINFORMATION ANALYSIS OF ANTHROPOGENIC CHANGES IN THE LANDSCAPES OF THE FOREST-STEPPE ZONE OF UKRAINE

2021 ◽  
pp. 38-53
Author(s):  
O.G. Golubtsov ◽  
◽  
L.Yu. Sorokina ◽  
L.M. Tymuliak ◽  
V.M. Chekhniy ◽  
...  
Keyword(s):  
Land Use ◽  
Remote Sensing Data ◽  
Basic Research ◽  
Steppe Zone ◽  
Anthropogenic Activity ◽  
Forest Steppe ◽  
Anthropogenic Pressure ◽  
Anthropogenic Changes ◽  
Anthropogenic Transformation ◽  
Geographical Regions

The purpose of the publication is to present the results of the study of anthropogenic changes in the landscapes of the Forest-Steppe zone of Ukraine, implemented by assessing the indicators of landscapes anthropogenic transformation, their diversity and fragmentation. The basic research methods are methods of geospatial GIS analysis and decoding of remote sensing data of the Earth, geoinformation mapping. According to the indicators of anthropogenic transformation of landscapes at the level of physical-geographical regions and districts of the Forest-Steppe zone, the features of changes for the period 1992-2018 are determined. The results of assessment of anthropogenic changes in forest-steppe landscapes of Ukraine show that in 1992 as well as in 2018 the vast majority of the landscapes of the territory are strongly and excessively transformed by anthropogenic activity. Such patterns persist, despite the fact that during the analyzed period in part of the investigated area there is a certain decrease in anthropogenic pressure on landscapes. The regular relations between the indicators of anthropic landscape diversity and fragmentation of landscapes are determined, which corroborates to their certain conditionality by the degree and nature of anthropogenic transformation of the territory. The novelty of the study are the proposed methods of spatial and temporal changes in landscapes estimating and identifying such changes in landscapes at the level of physical and geographical regions for the period 1992-2018 and revealing trends in the structure of land use, especially agricultural lands, forests, built-up territories as the leading types of land use in the Forest-Steppe zone of Ukraine.

The Water Conservation Capacity of the Ecotone of the Forest and Grassland in HulunBuir

2013 ◽  
Vol 807-809 ◽  
pp. 1875-1880
Author(s):  
Lin Li ◽  
Yan Mei Chen ◽  
Yan Ping Wang
Keyword(s):  
Land Use ◽  
Water Conservation ◽  
Meteorological Data ◽  
Remote Sensing Data ◽  
Forest Land ◽  
Total Water ◽  
Maximum Value ◽  
Unused Land ◽  
Land Use Types ◽  
Average Water

Based on the remote sensing data and meteorological data of MODIS, this paper studied the water conservation capacity of different land use type of the ecotone of the forest and grassland in Hulun Buir with the help of the ArcGIS software. The results shows that the average of the water conservation capacity of 11 years of the whole ecotone of the forest and grassland in Hulun Buir is 62.78×108m3/yr. Among of these, the forest land accounts for 69.37% of the total water conservation capacity, and the grassland, the cultivated land and the unused land account for 23.36%, 3.67% and 3.60%. And the water conservation capacity of the four land use types presented a fluctuated improving trend. The average water conservation capacity in each year of the unit area of the ecotone achieved its maximum value, 498.43m3/hm2 ,in 2003, and achieved its minimum value,193.03m3/ hm2,in the year of 2007.

scholarly journals Riparian conservation management needs habitat quality mapping

2020 ◽  
Vol 7 (2) ◽  
pp. 15-23
Author(s):  
Lyndre Nel
Keyword(s):  
Water Quality ◽  
Land Use ◽  
River Water ◽  
Habitat Quality ◽  
Conservation Management ◽  
Habitat Degradation ◽  
River Water Quality ◽  
Riparian Habitat ◽  
Conservation Programs ◽  
Human Welfare

Riparian habitat quality has a significant influence on the water quality of rivers, primary resources for urban and agricultural use. River water quality deteriorates where normal ecological functioning is disrupted by harmful impacts from nearby land-use types. Important rivers are typically managed and protected by government-led conservation programs. These programs often lack a key tool for efficient conservation management, habitat quality mapping. The Berg River, an important water source in South Africa, was used as a case-study to assess how habitat quality mapping could broaden the current scope of river conservation programs. The river faces threats from nearby urban settlements, industrial areas, mining, encroachment, and agricultural practices. The aim of this study was to develop habitat quality and habitat degradation maps for a section of the Berg River to assess the value that mapping holds for conservation managers and spatial planners. InVEST modelling software and ArcGIS was used to produce these habitat quality maps based on land-use/land-cover and threat impact data. The resulting maps showed several specific locations of heavily threatened and degraded riparian habitat that had not specifically been included in current government conservation management or spatial planning. Habitat quality mapping is an important tool that conservation managers and spatial planners can use to successfully address habitat degradation and protection while facing resource limitations, such as lack of funding. Oversight of degraded riparian habitats will lead to further decreases in river water quality, adversely affecting human welfare and local economies.

scholarly journals Impacts of inhomogeneous landscapes in oasis interior on the oasis self-maintaining mechanism by integrating numerical model with satellite data

2012 ◽  
Vol 9 (2) ◽  
pp. 1979-2004
Author(s):  
X. Meng ◽  
S. Lu ◽  
T. Zhang ◽  
Y. Ao ◽  
S. Li ◽  
...  
Keyword(s):  
Land Use ◽  
Surface Layer ◽  
Soil Moisture ◽  
Land Surface ◽  
Negative Impact ◽  
Remote Sensing Data ◽  
Vegetation Fraction ◽  
First Case ◽  
Land Use Types ◽  
Meteorological Modeling

Abstract. Mesoscale meteorological modeling is an important tool to help understand the energy budget of the oasis. While basic dynamic and thermodynamic processes for oasis self-maintaining in the desert environment is well investigated, influence of heterogeneous landscapes of oasis interior on the processes are still important and remain to be investigated. In this study, two simulations are designed for investigating the influence of inhomogeneity. In the first case, land surface parameters including land-use types, vegetation cover fraction, and surface layer soil moisture are derived by satellite remote sensing data from EOS/MODIS, and then be used specify the respective options in the MM5 model, to describe a real inhomogeneity for the oasis interior. In the other run, land use types are set to MM5 default, in which landscapes in the oasis interior is relative uniform, and then surface layer soil moisture and vegetation fraction is set to be averages of the first case for the respective oasis and desert surface lying, to represent a relative homogeneity. Results show that the inhomogeneity leads to a weaker oasis "cold-wet island" effect and a stronger turbulence over the oasis interior, both of which will reduce the oasis-desert secondary circulation and increase the evaporation over the oasis, resulting in a negative impact on the oasis self-protecting mechanism. The simulation of homogeneity indicates that the oasis may be more stable even with relative lower soil moisture if landscapes in the oasis interior are comparatively uniform.

scholarly journals Assessing habitat quality of the mountain nyala Tragelaphus buxtoni in the Bale Mountains, Ethiopia

2012 ◽  
Vol 58 (4) ◽  
pp. 525-535 ◽  
Author(s):  
Paul H. Evangelista ◽  
John Norman ◽  
Paul Swartzinki
Keyword(s):  
Habitat Quality ◽  
Expert Knowledge ◽  
Vegetation Type ◽  
Wildlife Habitat ◽  
Conservation Strategies ◽  
Small Scale ◽  
Conservation Priorities ◽  
Multiple Sources ◽  
Quality Model ◽  
Training Requirements

Abstract Populations of the endangered mountain nyala Tragelaphus buxtoni are significantly threatened by the loss of critical habitat. Population estimates are tentative, and information on the species’ distribution and available habitat is required for formulating immediate management and conservation strategies. To support management decisions and conservation priorities, we integrated information from a number of small-scale observational studies, interviews and reports from multiple sources to define habitat parameters and create a habitat quality model for mountain nyala in the Bale Mountains. For our analysis, we used the FunConn model, an expertise-based model that considers spatial relationships (i.e., patch size, distance) between the species and vegetation type, topography and disturbance to create a habitat quality surface. The habitat quality model showed that approximately 18,610 km2 (82.7% of our study area) is unsuitable or poor habitat for the mountain nyala, while 2,857 km2 (12.7%) and 1,026 km2 (4.6%) was ranked as good or optimal habitat, respectively. Our results not only reflected human induced habitat degradation, but also revealed an extensive area of intact habitat on the remote slopes of the Bale Mountain’s southern and southeastern escarpments. This study provides an example of the roles that expert knowledge can still play in modern geospatial modeling of wildlife habitat. New geospatial tools, such as the FunConn model, are readily available to wildlife managers and allow them to perform spatial analyses with minimal software, data and training requirements. This approach may be especially useful for species that are obscure to science or when field surveys are not practical.

Coastal Land Subsidence and Morphological Changes within Nigerian Coastal Areas

2014 ◽  
Vol 1 (1) ◽  
pp. 146-160
Author(s):  
Oluseyi O. Fabiyi ◽  
◽  
Glory O. Enaruvbe
Keyword(s):  
Land Use ◽  
Land Subsidence ◽  
Morphological Changes ◽  
Coastal Region ◽  
Remote Sensing Data ◽  
Coastal Areas ◽  
Oil Wells ◽  
Data Sets ◽  
Change Factors ◽  
Land Use Types

Nigerian coastline is increasingly subjected to a number of geomorphic, structural, and morphological changes due to a combination of several processes and change factors. Land subsidence is one of the major events causing geomorphic and morphological changes in the coastal areas. This study utilized GIS techniques, multi-date remote sensing data, auxiliary data, and fieldwork to examine, identify and estimate varying degrees of subsidence in the Nigerian coastal region. A total of 503 study stations were randomly generated along 853 kilometers stretch and 15 kilometers inland trajectory. The subsidence or elevation differentials at each station were computed as the arithmetic difference of the two digital terrain data sets (Aster 2001 and SRTM 2008). Correlation analyses were performed on the subsidence and distance of study stations to oil wells and corresponding land use types around the study stations. Subsidence was found to be positively correlated with distance to oil wells (0.557) while it has a weak negative correlation with land-use types(-0.0610). The study concluded that subsidence taking place in the Nigerian coastal area is compensated by river discharge in the delta region, and sand filling in the Lagos end, and construction of shoreline protection, jetty, and sand filling in the eastern end. Littoral nigerian est de plus en plus soumis a un certain nombre de changements geomorphologiques , structurales et morphologiques en raison d'une combinaison de plusieurs processus et facteurs de changement tels que !'elevation du niveau de la mer, l'affaissement du sol, de l'huile, le gaz et !'exploration de l'eau et d'autres activites anthropiques . Sur !'ensemble de ces changements qui se produisent dans la region cotiere, l'affaissement de terrain est l'un des evenement majeur entrainant des changements geomorphologiques et morphologiques dans !es zones cotieres. Cette 'etude utilise SIG, multi-date de donnees de teledetection, des donnees auxiliaires et travail sur le terrain pour examiner, identifier et evaluer des degres divers de la subsidence dans la region cotiere du Nigeria. Un total de 503 stations d'etude ont ete generes de fai;-:on aleatoire le long de 853 km extensibles et 15 kilometres a l'interieur trajectoire. L'affaissement OU )'elevation des ecarts a chaque station a ete calcule comme la difference arithmetique des deux ensembles de donnees numerique de terrain (Aster 2001 et SRTM, 2008). Les analyses de correlation ont ete effectues sur la subsidence et de la distance des stations d'etude de puits de petrole et Jes types d'utilisation des terres correspondantes autour des stations d'etude. L'affaissement a ete constate une correlation positive avec la distance aux puits de petrole (0,557) alors qu'il a une faible correlation negative avec Jes types d'utilisation des terres (-0,0610). L'etude a conclu que la subsidence qui a lieu dans Ia zone cotiere du Nigeria est compense par le debit des rivieres dans la region du delta, le remplissage de sable en fin de Lagos et de la construction de la protection du littoral, jetee et le remplissage de sable dans l'extremite orientale.

scholarly journals Study On Spatio-Temporal Evolution of Habitat Quality Based On Land-Use Change In Chongming Dongtan, China

2021 ◽  
Author(s):  
Sheng Li ◽  
Bin Dong ◽  
Xiang Gao ◽  
Haifeng Xu ◽  
Chunqiu Ren ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Habitat Quality ◽  
Migratory Birds ◽  
Habitat Degradation ◽  
Water Area ◽  
Ecological Environment ◽  
Cultivated Land ◽  
Construction Land ◽  
Invest Model

Abstract Chongming Dongtan is an important habitat for international migratory birds. It is of great significance to study its land use and habitat quality change for rare waterfowl protection and ecological environment restoration. Based on the land use data in 2002, 2012 and 2020, this paper analyzes the relationship between land use change and habitat quality evolution in Chongming Dongtan in recent 18 years by using InVEST model, land use dynamic degree and land use degree index. The results show that the main types of land use in the study area are water area and cultivated land, followed by woodland, reed beach, grass beach, bare beach and construction land. Among them, bare beach and construction land have changed dramatically, the former continuing to decrease while the latter continuing to increase. And the increasing speed began to slow down after 2012, and the increasing part was mainly from the surrounding cultivated land. Secondly, in terms of time change, the degradation of habitat quality in Chongming Dongtan has been gradually improved from aggravating trend in the past 18 years. In terms of spatial distribution, the habitat degradation degree of Chongming Dongtan is higher in the east and lower in the west, spreading from the center to the surrounding. Based on this, the change of land use and the interference of human activities are the important reasons for the change of ecological environment quality.

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