Link between Land Use and Flood Risk Assessment in Urban Areas

The densification of urban areas has raised concerns over increased pluvial flooding. Flood risk in urban areas might increase under the impact of land use changes. Urbanisation involves the conversion of natural areas to impermeable areas, causing lower infiltration rates and increased runoff. When high-intensity rainfall exceeds the capacity of an urban drainage system, the runoff causes pluvial flooding in low-laying areas. In the present study, a long time series (i.e., 20 years) of geo-referenced flood claims from property owners has been collected and analysed in detail to assess flood risk as it relates to land use changes in urban areas. The flood claim data come from property owners with flood insurance that covers property loss from overland flooding, groundwater intrusion through basement walls, as well as flooding from drainage systems; these data serve as a proxy of flood severity. The spatial relationships between land use change and flood occurrences in different urban areas were analysed. Special emphasis was placed on examining how nature-based solutions and blue-green infrastructure relate to flood risk. The relationships are defined by a statistical method explaining the tendencies whereby land use change affects flood risk.

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Almacenamiento de carbono y agua en un área periurbana de Tabasco

REVISTA TERRA LATINOAMERICANA ◽

10.28940/terra.v37i2.452 ◽

2019 ◽

Vol 37 (2) ◽

pp. 197

Author(s):

Roxana Jhoana Domínguez Bautista ◽

Aydee Tobías Baeza ◽

Silvia Del Carmen Ruíz Acosta ◽

Pedro Salvador Morales ◽

Adalberto Galindo Alcántara ◽

...

Keyword(s):

Land Use ◽

Land Use Change ◽

Soil Carbon ◽

Urban Area ◽

Urban Areas ◽

Land Use Changes ◽

Geographical Location ◽

Water Flows ◽

Carbon Store ◽

The Impact

As a result of its geographical location and its proximity to the city of Villahermosa in Tabasco, the Ocuilzapotlan-Macultepec road corridor is an area of great potential for urban growth. This has originated intense changes in land use in its peri-urban area that have affected the functions of its natural resources. For this reason, the objective of this research was to analyze land use changes that occurred during the period 2000-2017 and the impact on some environmental functions of the peri-urban areas of said corridor. By means of image analysis we identif ied land uses, land use change rates, and regulation of water flows. Our results suggest that urban areas and grasslands grew by 2.27 and 2.26%, respectively, while forests and wetlands decreased by 11.48 and 1.09%, respectively. Soil carbon concentrations are estimated to be 92.4 ± 5.1, 73.2 ± 2.8 and 220.4 ± 4.6 Mg C ha-1 for meadow, forest and wetland uses, respectively. The shoot compartment of the forest stores 63.27 Mg C ha-1, which, when added to soil carbon, totals 136.47 Mg C ha-1, making this land use the second most important carbon store, only after wetlands. It is concluded that the greatest environmental impact caused by land use change of the peri-urban area of the polygon studied is the reduction of wetlands since they are the main areas of carbon stores and are regulators of water flows.

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Estimating Changes in Habitat Quality through Land-Use Predictions: Case Study of Roe Deer (Capreolus pygargus tianschanicus) in Jeju Island

Sustainability ◽

10.3390/su122310123 ◽

2020 ◽

Vol 12 (23) ◽

pp. 10123

Author(s):

Dong-jin Lee ◽

Seong Woo Jeon

Keyword(s):

Land Use ◽

Land Use Change ◽

Protected Areas ◽

Habitat Quality ◽

Green Infrastructure ◽

Roe Deer ◽

Land Use Changes ◽

Jeju Island ◽

Invest Model ◽

Integrated Valuation

This study predicts future land-use changes and the resulting changes in habitat quality, suggesting a method for establishing land-use management to ensure sustainable wildlife habitats. The conservation effects were verified in terms of wild animal habitat quality according to the designation of protected areas. Land-use change until 2050 was predicted using the Dyna-Conversion of Land Use Change and its effects (Dyna-CLUE) model for Jeju Island, Korea, and the change in the quality of roe deer habitats was predicted using the Integrated Valuation and Environmental Services and Tradeoffs (InVEST) model. Results indicate that, compared to 2030, urbanized area increased by 42.55 km2, farmland decreased by 81.36 km2, and natural area increased by 38.82 km2 by 2050. The average habitat quality on Jeju Island was predicted to decrease from 0.306 in 2030 to 0.303 in 2050. The average habitat quality ranged from 0.477 in 2030 to 0.476 in 2050 in protected areas and 0.281 in 2030 to 0.278 in 2050 outside protected areas. Habitat quality in protected areas was relatively high, and its reduction was limited. Areas with lower habitat quality need approaches such as expanding greenery and improving its quality. By establishing appropriate land-use plans by predicting habitat quality, wildlife habitats can be better maintained and protected, which is a primary goal of green infrastructure.

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Urban Land Use Changes by the Integration of Remote Sensing, GIS, and Dynamics Modeling

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.726-731.4645 ◽

2013 ◽

Vol 726-731 ◽

pp. 4645-4649

Author(s):

Jia Hua Zhang ◽

Cui Hao ◽

Feng Mei Yao

Keyword(s):

Remote Sensing ◽

Land Use ◽

Urban Areas ◽

Logistic Model ◽

Land Use Changes ◽

Urban Land ◽

Urban Land Use ◽

Ratio Test ◽

Multinomial Logistic Model ◽

The Impact

We developed an approach to assess urban land use changes that incorporates socio-economic and environmental factors with multinomial logistic model, remote sensing data and GIS, and to quantify the impact of macro variables on land use of urban areas for the years 1990, 2000 and 2010 in Binhai New Area, China. The Markov transition matrix was designed to integrate with multinomial logistic model to illustrate and visualize the predicted land use surface. The multinomial logistic model was evaluated by means of Likelihood ratio test and Pseudo R-Square and showed a relatively good simulation. The prediction map of 2010 showed accurate rates 78.54%, 57.25% and 70.38%, respectively.

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Analysis of the Impact of Land Use and Occupation on the Biophysical Variables of the Cerrado Biome in Southwest Goiano, Brazil

Journal of Agricultural Science ◽

10.5539/jas.v11n1p399 ◽

2018 ◽

Vol 11 (1) ◽

pp. 399

Author(s):

Victor H. Moraes ◽

Pedro R. Giongo ◽

Marcio Mesquita ◽

Thomas J. Cavalcante ◽

Matheus V. A. Ventura ◽

...

Keyword(s):

Land Use ◽

Surface Temperature ◽

Urban Areas ◽

Vegetation Index ◽

Land Use Changes ◽

Weighted Average ◽

Natural Vegetation ◽

Agricultural Crops ◽

Quantitative Classification ◽

The Impact

The change in the use of natural vegetation by annual or perennial crops, sugarcane and fast-growing forests causes changes in the biophysical variables, and these changes can be monitored by remote sensing. The objective of this work was to evaluate, on a temporal scale, the impacts of land use changes on biophysical variables in the county of Santa Helena de Goias-Goias/Brazil. Between the years of 2000 to 2015 areas were identified for agricultural crops 1 (annual crops), water, agricultural crops 2 (sugarcane), natural vegetation, pasture and urban areas. The MODIS (Moderate Resolution Spectroradiometer) sensor products were selected for study: MOD11A2-Surface temperature; MOD16A2-Real evapotranspiration, MOD13Q1-Enhanced Vegetation Index and rainfall data from TRMM (Tropical Rainfall Measuring Mission). The geographic coordinates referring to the land uses were inserted in the LAPIG platform, searching the information of the biophysical variables referring to the selected pixel. The impact of land use change was evaluated by calculating the weighted average through the quantitative classification of the areas. It is concluded for the period of study that the index of average vegetation of the county had increase. There was an increase in the evapotranspiration volume of the county from 28% from 2000 to 2013 and the average surface temperature of the county showed a reduction of 2 °C in the period from 2000 to 2015.

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Flood Risk Index for Land-Use Changes: Case Study of Pakpanang River Basin

Engineering Journal ◽

10.4186/ej.2020.24.5.25 ◽

2020 ◽

Vol 24 (5) ◽

pp. 25-40

Author(s):

Chonlatid Kittikhun ◽

Sitang Pilailar ◽

Suwatana Chittaladakorn ◽

Eakawat Jhonpadit

Keyword(s):

Land Use ◽

River Basin ◽

Land Use Planning ◽

Flood Risk ◽

Urban Areas ◽

Risk Index ◽

Land Use Changes ◽

Flood Depth ◽

Arc Gis

Flood Risk Index (FRI) is the multi-criteria linked with the factors of vulnerability; exposure, susceptibility, and resilience. In order to establish local FRI, crucial local information have to be accumulated. However, under the limitation of land-use data, particular techniques were applied in this study. CA Markov model was used to analyze the past missing land-use data and, also forecast the future land-use of Pakpanang river basin under conditions of plan and without plan. The ratio changes of forest, agriculture, wetland and water, and urban areas were considered. Then, the result of LULC spatial-temporal changes was then applied to Hec-HMS and Hec-Ras , with Arc GIS extension of Hec-GeoHMS and Hec-GeoRas software, in order to evaluate the flood hydrographs and flood severity in three municipalities corresponding to 100-year return period rainfall. Afterward, the FRI of Pakpanang, Chianyai, and Hua-sai, which ranges from 0 to 1, were evaluated by using the modified FRI equations. It was found that sensitivity analysis in the area of forest on flood depth and inundation areas is incoherent. Nevertheless, without land-use planning, the changes in these three cities cause higher flood risk, where Chianyai is the riskiest as the FRIE is 0.58. Further consideration of FRIE and FRIP proportion that reveals the FRI deviation indicates that to reduce flood risk, Chianyai would need the most resources and highest effort comparison to Pakpanang and Hua-sai.

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A GIS-BASED PROCEDURE FOR MEASURING THE EFECTS OF THE BUILT ENVIRONMENT ON URBAN FLASH FLOODS

Journal of Green Building ◽

10.3992/jgb.11.3.110.1 ◽

2016 ◽

Vol 11 (3) ◽

pp. 110-125 ◽

Cited By ~ 1

Author(s):

Yan Li ◽

Chunlu Liu

Keyword(s):

Land Use ◽

Built Environment ◽

Urban Areas ◽

Flood Hazard ◽

Land Use Changes ◽

Flash Floods ◽

Flood Inundation ◽

Storm Events ◽

Severe Problem ◽

The Impact

Urban flooding has been a severe problem for many cities around the world as it remains one of the greatest threats to the property and safety of human communities. In Australia, it is seen as the most expensive natural hazard. However, urban areas that are impervious to rainwater have been sharply increasing owing to booming construction activities and rapid urbanisation. The change in the built environment may cause more frequent and longer duration of flooding in floodprone urban regions. Thus, the flood inundation issue associated with the effects of land uses needs to be explored and developed. This research constructs a framework for modelling urban flood inundation. Different rainfall events are then designed for examining the impact on flash floods generated by land-use changes. Measurement is formulated for changes of topographical features over a real time series. Geographic Information System (GIS) technologies are then utilised to visualise the effects of land-use changes on flood inundation under different types of storms. Based on a community-based case study, the results reveal that the built environment leads to varying degrees of aggravation of urban flash floods with different storm events and a few rainwater storage units may slightly mitigate flooding extents under different storm conditions. Hence, it is recommended that the outcomes of this study could be applied to flood assessment measures for urban development and the attained results could be utilised in government planning to raise awareness of flood hazard.

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Carbon density and anthropogenic land-use influences on net land-use change emissions

Biogeosciences ◽

10.5194/bg-10-6323-2013 ◽

2013 ◽

Vol 10 (10) ◽

pp. 6323-6337 ◽

Cited By ~ 12

Author(s):

S. J. Smith ◽

A. Rothwell

Keyword(s):

Land Use ◽

Land Use Change ◽

Secondary Forest ◽

Land Use Changes ◽

Forest Harvesting ◽

Integrated Assessment Model ◽

Assessment Model ◽

Carbon Cycle Model ◽

Land Use Scenario ◽

The Impact

Abstract. We examine historical and future land-use emissions using a simple mechanistic carbon-cycle model with regional and ecosystem specific parameterizations. We use the latest gridded data for historical and future land-use changes, which includes estimates for the impact of forest harvesting and secondary forest regrowth. Our central estimate of net terrestrial land-use change emissions, exclusive of climate–carbon feedbacks, is 250 GtC over the last 300 yr. This estimate is most sensitive to assumptions for preindustrial forest and soil carbon densities. We also find that land-use change emissions estimates are sensitive to the treatment of crop and pasture lands. These sensitivities also translate into differences in future terrestrial uptake in the RCP (representative concentration pathway) 4.5 land-use scenario. The estimate of future uptake obtained here is smaller than the native values from the GCAM (Global Change Assessment Model) integrated assessment model result due to lower net reforestation in the RCP4.5 gridded land-use data product.

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Temporal-Spatial Variations and Influencing Factor of Land Use Change in Xinjiang, Central Asia, from 1995 to 2015

Sustainability ◽

10.3390/su11030696 ◽

2019 ◽

Vol 11 (3) ◽

pp. 696 ◽

Cited By ~ 3

Author(s):

Qun Liu ◽

Zhaoping Yang ◽

Cuirong Wang ◽

Fang Han

Keyword(s):

Land Use ◽

Land Use Change ◽

Central Asia ◽

Influencing Factor ◽

Land Use Changes ◽

Spatial Variations ◽

Water Bodies ◽

Unused Land ◽

Basin Scale ◽

The Impact

In this study, we analyzed the temporal-spatial variations of the characteristics of land use change in central Asia over the past two decades. This was conducted using four indicators (change rate, equilibrium extent, dynamic index, and transfer direction) and a multi-scale correlation analysis method, which explained the impact of recent environmental transformations on land use changes. The results indicated that the integrated dynamic degree of land use increased by 2.2% from 1995 to 2015. The areas of cropland, water bodies, and artificial land increased, with rates of 1047 km2/a, 39 km2/a, and 129 km2/a, respectively. On the other hand, the areas of forest, grassland, and unused land decreased, with rates of 54 km2/a, 803 km2/a, and 359 km2/a, respectively. There were significant increases in cropland and water bodies from 1995 to 2005, while the amount of artificial land significantly increased from 2005 to 2015. The increased areas of cropland in Xinjiang were mainly converted from grassland and unused land from 1995 to 2015, while the artificial land increase was mainly a result of the conversion from cropland, grassland, and unused land. The area of cropland rapidly expanded in south Xinjiang, which has led to centroid position to move cropland in Xinjiang in a southwest direction. Economic development and the rapid growth of population size are the main factors responsible for the cropland increases in Xinjiang. Runoff variations have a key impact on cropland changes at the river basin scale, as seen in three typical river basins.

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Global assessment of land cover changes and rural-urban interface in Portugal

10.5194/nhess-2017-359 ◽

2017 ◽

Cited By ~ 1

Author(s):

Marj Tonini ◽

Joana Parente ◽

Mario Pereira

Keyword(s):

Land Use ◽

Land Cover ◽

Urban Areas ◽

Global Assessment ◽

Fire Regime ◽

Land Use Changes ◽

Population Increase ◽

Burnt Area ◽

Agricultural Areas ◽

The Impact

Abstract. The wildland-/rural-urban interface (WUI/RUI) is a particularly important aspect of the fire regime. In Mediterranean basin most of the fires in this pyro region are caused by humans and the risk and consequences are particularly high due to the close proximity to population, human infrastructures and urban areas. Population increase, urban growth and the rapid changes in land use incurred in Europe over the last 30 years has been unprecedented, especially nearby the metropolitan areas, and some of these trends are expected to continue. Associated to high socioeconomic development, Portugal experienced in the last decades significant land cover/land use changes (LCLUC), population dynamics and demographic trends in response to migration, rural abandonment, and ageing of rural population. This study aims to assess the evolution of RUI in Portugal, from 1990 to 2012, based on LCLUC providing also a quantitative characterization of forest fires dynamics in relation to the burnt area. Obtained results disclose important LCLUC which spatial distribution is far from uniform within the territory. A significant increase in artificial surfaces is registered nearby the main metropolitan communities of the northwest and littoral-central and southern regions, whilst the abandonment of agricultural land nearby the inland urban areas leads to an increase of uncultivated semi-natural and forest areas. Within agricultural areas, heterogeneous patches suffered the greatest changes and are the main contributors to the increase of urban areas. Moreover these are among the LCLU classes with higher burnt area, reasons why heterogeneous agricultural areas have been included in the definition of RUI. Finally, the mapped RUI’s area, burnt area and burnt area within RUI allow to conclude that, form 1990 to 2012 in Portugal, RUI increased more than two thirds and total burnt area decreased one third. Nevertheless, burnt area within RUI doubled, which emphasize the significance of RUI for land and fire managers. This research provides a first quantitative global assessment of RUI in Portugal and presents an innovative analysis on the impact of land use changes on burnt areas.

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Impacts of climate variability and land-use change on hydrology in the period 1981-2009 in the central highlands of Vietnam

Global NEST Journal ◽

10.30955/gnj.001706 ◽

2015 ◽

Vol 17 (4) ◽

pp. 870-881 ◽

Cited By ~ 3

Keyword(s):

Land Use ◽

Land Use Change ◽

Climate Variability ◽

Assessment Tool ◽

Meteorological Data ◽

Land Use Changes ◽

Hydrological Regime ◽

Hydrological Response ◽

Central Highlands ◽

The Impact

<div> <p>In this study, we investigated the separate and combined impacts of climate and land-use changes on hydrological response in the Central Highlands of Vietnam during the period 1981-2009. The Mann-Kendall and Pettit tests were applied to detect the trends in the hydro-meteorological data. The Soil and Water Assessment Tool (SWAT) was setup in the region, and evaluation based on daily data highlights the models adequacy. From this, the responses of hydrology to climate variability and land-use changes were considered. Overall, variability in climate seems to strongly drive the variability in the hydrological response in comparison to alternations in the hydrological regime due to land-use change during the period 1981-2009. The results indicate that land-use change had a minor impact on the annual flow (0.4% reduction), whilst the impact from climate variability had been more significant (13.5% change). Under the impact of coupled climate variability and land-use change, the annual streamflow increased by 13.1%.</p> </div> <p> </p>

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