Flood Risk Reduction from Agricultural Best Management Practices

Antolini, Federico; Tate, Eric; Dalzell, B. J.; Young, Nathan; Johnson, Kris; Hawthorne, Peter

doi:10.1111/1752-1688.12812

Cited by 48 publications

(31 citation statements)

References 78 publications

(125 reference statements)

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“…However, as our study highlighted, this depends on the type of management carried out. If the practices are extensive (ORCH), it is very likely that these areas can contribute to flood mitigation [82] and decrease the flood economic losses [83]. When agriculture areas are managed intensively (VINE and CROP), the capacity of these areas to retain flood is significantly reduced.…”

Section: Discussionmentioning

confidence: 99%

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

et al. 2020

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In urban areas, land use usually increases soil degradation. However, there are areas occupied by agriculture and woodlands with an essential role in provisioning food and other services such as water and climate regulation. The objective of this work was to assess the effect of long-term land use and soil management practices on peri-urban soils in Zagreb (Croatia). Samples were collected at depth 0–10 cm within intensively tilled cropland (CROP) and vineyard (VINE), traditional grass-covered orchard (ORCH), and forest (FOR). The results showed that bulk density was significantly higher in VINE and CROP than in ORCH and FOR. The opposite dynamic was observed in water-holding capacity, air-filled porosity, aggregate stability, organic matter, and soil organic matter stocks (SOCS). Soil water infiltration was higher in FOR plot compared to the other plots. Overall, land-use change had a substantial impact on soil properties and SOCS, especially in CROP and VINE soils. Tillage, pesticides, and fertilizer applications were presumably the reasons for altered soil quality properties. Intensively used areas (VINE and CROPS) may reduce soil ecosystems services such as the capacity for flood retention and C sequestration.

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Section: Discussionmentioning

confidence: 99%

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

et al. 2020

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“…The proposed mitigation measures under green and green-grey scenarios provide the greatest reduction in flood hazard and, consequently, in flood losses in the agricultural areas that presently have no flood protection, such as in sectors 7, 8, and 13. Although the share of agricultural damages in total losses depends on local conditions in the watershed [34] and prevalence of higher-value crops [41], the results presented here clearly indicate that the agricultural damages are not marginal and have a critical impact on the selection of flood protection development scenarios in predominately agricultural watershed.…”

Section: Discussionmentioning

confidence: 75%

“…The objective of this research is identification of optimal flood protection setup that would result in maximum benefits, i.e., reduction of losses due to floods in such watersheds. Considering a relatively small body of research on this topic up to date, especially on valuation of damages to agricultural assets [41], and considering impacts that flood mitigation in rural watersheds can have on downstream urban areas [34], this paper presents an effort to fill this gap and provide a contribution to a better understanding of flood risk assessment and management in general.…”

Section: Discussionmentioning

confidence: 99%

“…The vulnerability of the agricultural resources and crop producing areas was defined as their direct exposure to flooding, regardless of the amount of time spent under water. Damages to crops such as apples and corn are highly dependable on the depth of flooding [34], and have been adjusted accordingly to conform to field observations and high water marks. Potatoes and unbaled hay located within the flood boundaries were considered a total loss, regardless of the corresponding depth of flooding.…”

Section: Agricultural Productionmentioning

confidence: 99%

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Evaluation of Green and Grey Flood Mitigation Measures in Rural Watersheds

2020

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Floods cause considerable damages worldwide and mitigation of their adverse effects through effective protection measures is needed. Along with the commonly applied “grey” infrastructure, “green” measures that can offer additional benefits, such as ecosystem services, are increasingly being considered lately. While the recent research tendencies are focused on the effectiveness and the value of green measures in urban areas, this paper presents a comprehensive financial evaluation of green and grey flood mitigation scenarios for a smaller rural watershed. A micro-scale damage model that builds on the hydrodynamic modeling of hazard, detailed asset identification, and damage assessment is presented and applied for evaluation of benefits from various flood mitigation measures in the Tamnava watershed in Serbia. Four scenarios are considered: (1) existing flood protection system; (2) green scenario involving new detention basins; (3) grey infrastructure enhancement by rising of the existing levees and diverting flood discharges; and (4) green-grey scenario that combines scenarios (2) and (3). The benefits (loss reduction) are the greatest with the green scenario and marginally higher with the combined green-grey scenario. The results suggest that for small rural watersheds, a holistic, integrative approach that includes both types of infrastructure can provide the most effective flood risk mitigation.

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“…Good water quality and quantity are essential for enhancing ecological stability and diversity, and both of which play important roles in maintaining sustainable agricultural or economic development and human health (Antolini et al, 2020;Gleick, 2000;Lu et al, 2015;Singh et al, 2017;Srinivasan and Reddy, 2009). The dynamics of water quality and quantity at the catchment scale 35 are mainly governed by a combination of climate and land use, as other catchment characteristics (e.g., topography, soil, and https://doi.org/10.5194/hess-2021-476 Preprint.…”

Section: Introductionmentioning

confidence: 99%

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

Lei

Wagner

Fohrer

2021

Preprint

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Abstract. Understanding the impacts of land use changes (LUCC) on the dynamics of water quantity and quality is necessary to identify suitable mitigation measures that are needed for sustainable watershed management. Lowland catchments are characterized by a strong interaction of streamflow and near-surface groundwater that intensifies the risk of nutrient pollution. This study aims to reveal the relationship between long-term land use change and the water and nutrient balance in a typical lowland catchment in northern Germany. A hydrologic model (Soil and Water Assessment Tool, SWAT) and partial least squares regression (PLSR) were used to quantify the impacts of different land use types on the variations in actual evapotranspiration (ET), surface runoff (SQ), base flow (BF), and water yield (WYLD) as well as on sediment yield (SED), total phosphorus (TP) and total nitrogen (TN) loads. To this end, the model was calibrated and validated with daily streamflow data (30 years) as well as sediment and nutrient data from two water quality measurement campaigns (3 years in total). Three model runs over thirty years were performed using land use maps of 1987, 2010, and 2019, respectively. Land use changes between those years were used to explain the modelled changes in water quantity and quality on the subbasin scale applying PLSR. SWAT achieved a very good performance for daily streamflow values (calibration: NSE = 0.79, KGE = 0.88, PBIAS = 0.3 %; validation: NSE = 0.79, KGE = 0.87, PBIAS = 7.2 %), a satisfactory to very good performance for daily TN (calibration: NSE = 0.64, KGE = 0.71, PBIAS = −11.5 %; validation: NSE = 0.86, KGE = 0.91, PBIAS = 5 %), a satisfactory performance for daily sediment load (NSE = 0.54–0.65, KGE = 0.58–0.59, PBIAS = −22.2 %–12 %), and an acceptable performance for daily TP (calibration: NSE = 0.56, KGE = 0.65, PBIAS = −4.7 %; validation: NSE = 0.29, KGE = 0.22, PBIAS = −46.2 %) in the Stör Catchment. The variations in ET, SQ, BF, WYLD, SED, TP, and TN could be explained to an extent of 61 %–88 % by changes in the area, shape, dominance, and aggregation of individual land use types. They were largely correlated with the major LUCC in the study area i.e. a decrease of arable land, and a respective increase of pasture and settlement. The change in the areal percentage of arable land positively affected the dynamics of SED, TP, TN and negatively affected BF, indicated by a Variable Influence on Projection (VIP) > 1.16 and large absolute regression coefficients (RCs: 0.6–0.88 for SED, TP, TN; −1.65 for BF). The change in pasture area was negatively affecting SED, TP, and TN (RCs: −0.69–−0.12, VIPs > 1) while positively affecting ET (RC: 0.09, VIP: 0.92). The change in settlement percentage had a VIP of up to 1.17 for SQ and positively and significantly influenced it (RC: 1.16, p-value < 0.001). PLSR helped to identify the key contributions from individual land use changes on water quantity and quality dynamics. These provide a quantitative basis for targeting most influential land use changes to mitigate impacts on water quality in the future.

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Flood Risk Reduction from Agricultural Best Management Practices

Cited by 48 publications

References 78 publications

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

Agricultural and Forest Land-Use Impact on Soil Properties in Zagreb Periurban Area (Croatia)

Evaluation of Green and Grey Flood Mitigation Measures in Rural Watersheds

Influences of land use changes on the dynamics of water quantity and quality in the German lowland catchment of the Stör

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