Modelling the hydrologic effects of dynamic land-use change using a distributed hydrologic model and a spatial land-use allocation model

2010 ◽  
Vol 24 (18) ◽  
pp. 2538-2554 ◽  
Author(s):  
Hone-Jay Chu ◽  
Yu-Pin Lin ◽  
Chun-Wei Huang ◽  
Cheng-Yu Hsu ◽  
Horng-Yng Chen
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Hydrologic Model ◽  
Allocation Model ◽  
Distributed Hydrologic Model ◽  
Land Use Allocation

scholarly journals Study on Hydrologic Effects of Land Use Change Using a Distributed Hydrologic Model in the Dynamic Land Use Mode

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 447
Author(s):  
Qingyan Sun ◽  
Chuiyu Lu ◽  
Hui Guo ◽  
Lingjia Yan ◽  
Xin He ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Hydrologic Model ◽  
Sanjiang Plain ◽  
Hydrologic Cycle ◽  
Dynamic Mode ◽  
The Sanjiang Plain ◽  
Distributed Hydrologic Model ◽  
Cycle Simulation ◽  
Effects Of Land Use

It is reasonable to simulate the hydrologic cycle in regions with drastic land use change using a distributed hydrologic model in the dynamic land use mode (dynamic mode). A new dynamic mode is introduced into an object-oriented modularized model for basin-scale water cycle simulation (MODCYCLE), a distributed hydrologic model based on sub-watersheds, and the hydrological response unit (HRU). The new mode can linearly interpolate data for the years without land use data and consistently transfer HRU water storage between two adjacent years after a land use data update. The hydrologic cycle simulation of the Sanjiang Plain in China was carried out from 2000 to 2014 in the dynamic mode using land use maps of 2000, 2005, 2010, and 2014. Through calibration and validation, the performance of the model reached a satisfactory level. Replacing the land use data of the calibrated model using that of the year 2000, a comparison model in the static land use mode (static mode) was built (i.e., land use unchanged since 2000). The hydrologic effects of land use change were analyzed using the two models. If the land use pattern remained unchanged from 2000, despite the average annual runoff increasing by 4% and the average annual evapotranspiration decreasing by 4% in this region only, the groundwater storage of the plain areas in 2014 would increase by 4.6 bil. m3 compared to that in 2000, rather than the actual decrease of 4.7 bil. m3. The results show that the fluxes associated with groundwater are obviously more disturbed by land use change in the Sanjiang Plain. This study suggests that the dynamic mode should be used to simulate the hydrologic cycle in regions with drastic land use change, and the consistent transfer of HRU water storage may be considered in the dynamic mode.

scholarly journals Effects of Urbanization on Watershed Evapotranspiration and Its Components in Southern China

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 645 ◽  
Author(s):  
Qingzhou Zheng ◽  
Lu Hao ◽  
Xiaolin Huang ◽  
Lei Sun ◽  
Ge Sun
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Land Surface ◽  
Southern China ◽  
Hydrologic Model ◽  
Water Evaporation ◽  
Water Yield ◽  
Positive Trend ◽  
Significant Downward Trend ◽  
Effects Of Land Use

Understanding the effects of land use change on evapotranspiration (ET) and its partitioning to transpiration and evaporation is important for accurately evaluating the likely environmental impacts on watershed water supply, climate moderation, and other ecosystem services (e.g., carbon sequestration and biodiversity). This study used a distributed hydrologic model, MIKE SHE, to partition evapotranspiration into soil evaporation, transpiration, ponded water evaporation, and interception, and examined how the ET partitions affected the water balance in the Qinhuai River Basin from 2000 to 2013. Simulated daily ET was compared to measurements at an eddy flux research site during 2016–2017 (R2 = 0.72). Degradation in rice-wheat rotation fields and expansion of impervious surfaces impacted not only total watershed evapotranspiration, which showed a significant downward trend (p < 0.05), but also its partitioning. A significant (p < 0.01) decrease in transpiration was detected. Ponded water evaporation was the only ET partition that exhibited a significant positive trend (p < 0.05). We concluded that the reduced transpiration as a result of land use and land cover change was the primary factor driving the variation of watershed scale evapotranspiration. In addition, there was an increase in annual water yield (23%) as a response to significant reduction in ET (7%) due to a 175% expansion of urban area in the study watershed. Our study provided insights to the mechanisms of land surface–water cycle interaction and better understanding of the effects of land use change on urban micro-climate such as “urban dry island” and “urban heat island” effects.

Impacts of incorporating dominant crop rotation patterns as primary land use change on hydrologic model performance

2017 ◽  
Vol 247 ◽  
pp. 33-42 ◽  
Author(s):  
Jungang Gao ◽  
Aleksey Y. Sheshukov ◽  
Haw Yen ◽  
Jude H. Kastens ◽  
Dana L. Peterson
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Crop Rotation ◽  
Model Performance ◽  
Hydrologic Model

scholarly journals New land use change scenarios for Brazil: refining global SSPs with a regional spatially-explicit allocation model

2021 ◽  
Author(s):  
Francisco Gilney Silva Bezerra ◽  
Celso Von Randow ◽  
Talita Oliveira Assis ◽  
Karine Rocha Aguiar Bezerra ◽  
Graciela Tejada ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Forest Restoration ◽  
Global Climate ◽  
Global Analysis ◽  
Spatially Explicit ◽  
Surface Model ◽  
Modeling Framework ◽  
Allocation Model ◽  
The Future

The future of land use and cover change in Brazil, in particular due to deforestation and forest restoration processes, is critical for the future of global climate and biodiversity, given the richness of its five biomes. These changes in Brazil depend on the interlink between global factors, due to its role as one of the main exporters of commodities in the world, and the national to local institutional, socioeconomic and biophysical contexts. Aiming to develop scenarios that consider the balance between global and local factors, a new set of land use change scenarios for Brazil were developed, aligned with the global structure Shared Socio-Economic Pathways (SSPs) and Representative Concentration Pathway (RCPs) developed by the global change research community. The narratives of the new scenarios align with  SSP1/RCP 1.9, SSP2/RCP 4.5, and SSP3/RCP 7.0. The scenarios were developed combining the LuccME spatially explicit land change allocation modeling framework and the INLAND surface model to incorporate the climatic variables in water deficit.  Based on detailed biophysical, socio-economic and institutional factors for each biome in Brazil, we have created spatially-explicit scenarios  until 2050, considering the following classes: forest vegetation, grassland vegetation, planted pasture, agriculture, mosaic of small land uses, and forestry. The results aim at regionally detailing global models and could be used both regionally to support decision-making, but also to enrich global analysis.

scholarly journals Sustainable Land-Use Allocation Model at a Watershed Level under Uncertainty

2021 ◽  
Vol 18 (24) ◽  
pp. 13411
Author(s):  
Yao Lu ◽  
Min Zhou ◽  
Guoliang Ou ◽  
Zuo Zhang ◽  
Li He ◽  
...  
Keyword(s):  
Land Use ◽  
Economic Development ◽  
Land Use Planning ◽  
Ecological Factors ◽  
Sustainable Land Use ◽  
Land Use Patterns ◽  
Allocation Model ◽  
Watershed Land Use ◽  
Use Patterns ◽  
Land Use Allocation

Land-use allocation models can effectively support sustainable land use. A large number of studies solve the problems of land-use planning by constructing models, such as mathematical models and spatial analysis models. However, these models fail to fully and comprehensively consider three uncertain factors of land-use systems: randomness, interval and fuzziness. 33Therefore, through the study of the watershed land-use system, this paper develops a land-use allocation model considering the regional land–society–economy–environment system under uncertain conditions. On the basis of this model, an interval fuzzy two-stage random land-use allocation model (IFTSP-LUAM) combining social, economic and ecological factors is proposed to provide sustainable development strategies at the basin level. In addition, the proposed IFTSP-LUAM takes into account the above three uncertainties and multistage, multiobjective, dynamic, systematic and complex characteristics of typical land-use planning systems. The results showed that the model considers more socioeconomic and ecological factors and can effectively reflect the quantitative relationship between the increase in economic benefits and the decrease in environmental costs of a land-use system. The model was applied to land-use planning of Nansihu River Basin in Shandong Province. The results provided a series of suitable land-use patterns and environmental emission scenarios under uncertain conditions, which can help the watershed environmental protection bureau and watershed land-use decision-makers to formulate appropriate land-use policies, so as to balance social and economic development and ecological protection. The simulation results can provide support for an in-depth analysis of land-use patterns and the trade-off between economic development and ecological environment protection.

Land Use Allocation Model for Flood Control

1978 ◽  
Vol 104 (1) ◽  
pp. 93-104
Author(s):  
Lewis D. Hopkins ◽  
E. Downey Brill ◽  
Jon C. Liebman ◽  
Harry G. Wenzel
Keyword(s):  
Land Use ◽  
Flood Control ◽  
Allocation Model ◽  
Land Use Allocation
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