Landscape heterogeneity and hydrological processes: a review of landscape-based hydrological models

Gao, Hongkai; Sabo, John L.; Chen, Xiaohong; Li, Yong; Yang, Zongji; Ren, Ze; Liu, Min

doi:10.1007/s10980-018-0690-4

Cited by 72 publications

(37 citation statements)

References 153 publications

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“…There is a large amount of recent work using landscape metrics for analyzing hydrological patterns and processes, many of them with the aim of studying flow connectivity (Epting et al, ; Gao et al, ; Larsen, Ma, & Kaplan, ; Van Nieuwenhuyse et al, ; Yuan et al, ; among others). In these studies, metrics that explicitly consider topography are applied, and main conclusions indicated that flow‐explicit metrics are the most appropriate to analyse connectivity, being that other pattern metrics based solely on geometry are poor predictors of connectivity and hydroperiod.…”

Section: Discussionmentioning

confidence: 99%

Linking soil water balance with flood spatial arrangement in an extremely flat landscape

Vercelli

Varni

Lara

et al. 2019

Hydrological Processes

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In areas with very mild relief, water drains in a disordered way due to the lack of a developed drainage network, as it occurs in extremely flat sedimentary regions like the Argentine Pampas. The study analysed the flood spatial arrangements in 2014 by calculating landscape metrics and relating them to soil water balance. The study area is located at Del Azul creek lower basin (Pampa Ecoregion, Argentina). Daily soil water balances were obtained, and seven landscape metrics were calculated in 15 windows in five LandSat images, all along 2014, to explore the relationship between hydrological scenarios and spatial pattern summarized with principal component analysis. Water excess concentrated in winter (June and August); deficits were in late spring and summer (January and November), whereas the beginning of autumn (March) was an intermediate situation. Principal component 1 (44.7%) reflected area and shape metrics and correlated positively with water table level; principal component 2 (32.3%) summarized aggregation ones and was negatively associated with accumulated water excesses or deficits in previous 30 days and useful reserve. Both exhibited possible threshold-driven behaviour. Internal heterogeneity between NW and SE zones within the study area coincided with the existence of ancient alluvial fans. The results highlight the peculiarities of the flood spatial patterns in regions with very mild relief, where landforms usually determine water flows. K E Y W O R D SArgentine Pampas, floods, landscape metrics, large plains, soil water balance, spatial patterns

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Section: Discussionmentioning

confidence: 99%

Linking soil water balance with flood spatial arrangement in an extremely flat landscape

Vercelli

Varni

Lara

et al. 2019

Hydrological Processes

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“…More work should be done to identify ground features, including the structure and role of epikarst on hydrological processes. It may be feasible to infer subsurface conditions based on landscape patterns (Gao et al 2018). Imaging the structure and hydraulic properties will help understand how water moves through the subsurface.…”

Section: Ongoing Research Supporting Policy For Sustainable Karst Lanmentioning

confidence: 99%

“…Models could address problems related to physical features of hydrological behavior and nonlinearity of karst aquifers, analyze the characteristics and regional differentiation of all storage forms and develop methods and distributed models to define quantitatively the distribution of subsurface drainage (Meng and Wang 2010;Chang et al 2015). Interactions between landscape heterogeneity and hydrological processes should also be further explored (Gao et al 2018). Other foci should include establishing a database of optimal parameters and incorporating the eco-hydrologic response and water resource assessment in hydrological models (Chang et al 2015).…”

Section: Ongoing Research Supporting Policy For Sustainable Karst Lanmentioning

confidence: 99%

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Karst landscapes of China: patterns, ecosystem processes and services

et al. 2019

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Context The karst region of southwestern China, one of the largest continuous karsts in the world, is known for its unique landscapes and rich biodiversity. This region has suffered severe environmental degradation (e.g., vegetation cover loss, soil erosion and biodiversity loss). In recent decades, Chinese governments at different levels have initiated several ecological programs (e.g., Green for Grain, Mountain Closure) to restore the degraded environment and to alleviate poverty. Objectives This study summarizes landscape studies of karst landscapes patterns, their dynamics and interactions among landscape pattern, hydrological processes and ecosystem services (ES). Methods We conducted a systematic literature review of science and land use policy to identify knowledge gaps and recommend future research and policy directions. Results Karst landscapes have experienced rapid turnover in recent decades due largely to the overlap of intense human activity on the fragile karst ecosystems. Many studies have comprehensively examined hydrology, soil processes and ecosystem services (ES) and their relationships with landscape pattern. Most of these studies have found that karst ecosystems recover with improved ES. However, the importance of epikarst in hydrological and soil processes, intense anthropogenic disturbance and landscape heterogeneity in landscape models remains elusive. Conclusions Future research should focus on indepth examination and modelling of karst specific hydrological and soil processes, investigating relationships between climatic change, landscape change, ecological processes, and region-specific ES assessments. Results from such research should provide the necessary scientific support for a comprehensive, national karst rocky desertification treatment project (Stage II) and poverty alleviation initiatives.

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“…The concentration of aerosol in East Asia is relatively high, which is due to the large emissions associated with rapid economic growth and industrialization. The interaction between the East Asian summer monsoon (EASM) and aerosols had attracted much attention in climatic and environmental studies, such as the deterioration of air quality, intensification of drought, and exacerbated flooding disasters (Gao et al, 2018;Wang et al, 2018;Zhu et al, 2018;Duan et al, 2019;Yu et al, 2019). The aerosol concentration in eastern China had shown rising trend after South Asia over time.…”

Section: Introductionmentioning

confidence: 99%

The Response of the Aerosol Distribution to Monsoon Intensity Over the Summer Monsoon Transition Zone

et al. 2020

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The study region was the East Asian summer monsoon (EASM) transition zone. The datasets used in this study included the daily data of national stations, reanalysis datasets of the European Centre for Medium-Range Weather Forecasts (ECMWF), Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) and Moderate Resolution Imaging Spectroradiometer (MODIS) data. All datasets covered a total period of more than 1 year (from January 2008 to December 2016). We analyzed the influence of EASM on aerosol optical depth (AOD) in the transition zone and the response of different types of aerosols in the transition zone to the abundant and deficient monsoon years. It was found that the AOD was 0.15 in abundant years, while it was 0.09 in deficient years. The abundant year's AOD was 40% larger than deficient years. In deficient years, with less precipitation, the influence of precipitation on the AOD was more significant. The dust was mainly distributed at 2-6 km in the western part of the transition zone, while the polluted aerosols were distributed at 0-4 km in the central and eastern region. The frequency of dust was significantly lower in abundant years, and dust particles accounted for about 19.6%. The frequency of polluted aerosols had an opposite trend, accounting for about 71.8%. Our findings bringed insight into the vertical distribution of aerosols in the atmospheric boundary layer and the interannual variation over the transition zone.

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Landscape heterogeneity and hydrological processes: a review of landscape-based hydrological models

Cited by 72 publications

References 153 publications

Linking soil water balance with flood spatial arrangement in an extremely flat landscape

Linking soil water balance with flood spatial arrangement in an extremely flat landscape

Karst landscapes of China: patterns, ecosystem processes and services

The Response of the Aerosol Distribution to Monsoon Intensity Over the Summer Monsoon Transition Zone

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