Modelling regional variability of irrigation requirements due to climate change in Northern Germany

Riediger, Jan; Breckling, Broder; Svoboda, Nikolai; Schröder, Winfried

doi:10.1016/j.scitotenv.2015.09.043

Cited by 27 publications

(13 citation statements)

References 27 publications

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“…The study site at Stechlin is located in the German state of Brandenburg, which is droughtsensitive, and is an extensively forested area where there is concern over land use effects on groundwater recharge; in particular, the role of forest management for timber production in reducing recharge. This is compounded by climate change predictions, which forecast warmer and drier summers (Dorau, Gelhausen, Esplör, & Mansfeldt, 2015;Lischeid & Nathkin, 2011;Riediger, Breckling, Svoboda, & Schröder, 2016). Thus, we aim to show how multiproxy data can be used to improve the robustness of quantifying land use effects on the water balance using an ecohydrological model.…”

Section: Introductionmentioning

confidence: 99%

Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Douinot

Tetzlaff

Maneta

et al. 2019

Hydrological Processes

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We used the new process‐based, tracer‐aided ecohydrological model EcH2O‐iso to assess the effects of vegetation cover on water balance partitioning and associated flux ages under temperate deciduous beech forest (F) and grassland (G) at an intensively monitored site in Northern Germany. Unique, multicriteria calibration, based on measured components of energy balance, hydrological function and biomass accumulation, resulted in good simulations reproducing measured soil surface temperatures, soil water content, transpiration, and biomass production. Model results showed the forest “used” more water than the grassland; of 620 mm average annual precipitation, losses were higher through interception (29% under F, 16% for G) and combined soil evaporation and transpiration (59% F, 47% G). Consequently, groundwater (GW) recharge was enhanced under grassland at 37% (~225 mm) of precipitation compared with 12% (~73 mm) for forest. The model tracked the ages of water in different storage compartments and associated fluxes. In shallow soil horizons, the average ages of soil water fluxes and evaporation were similar in both plots (~1.5 months), though transpiration and GW recharge were older under forest (~6 months compared with ~3 months for transpiration, and ~12 months compared with ~10 months for GW). Flux tracking using measured chloride data as a conservative tracer provided independent support for the modelling results, though highlighted effects of uncertainties in forest partitioning of evaporation and transpiration. By tracking storage—flux—age interactions under different land covers, EcH2O‐iso could quantify the effects of vegetation on water partitioning and age distributions. Given the likelihood of drier, warmer summers, such models can help assess the implications of land use for water resource availability to inform debates over building landscape resilience to climate change. Better conceptualization of soil water mixing processes and improved calibration data on leaf area index and root distribution appear obvious respective modelling and data needs for improved simulations.

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Section: Introductionmentioning

confidence: 99%

Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Douinot

Tetzlaff

Maneta

et al. 2019

Hydrological Processes

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“…Münch et al 2014;Nendel et al 2014;Statistisches Bundesamt 2014c;Gutzler et al 2015;Riediger et al 2016 "↑" indicates management beneficial for soil functions. "↓" indicates management threatening soil functions.…”

Section: Irrigationmentioning

confidence: 99%

“…Several studies found economic potential for irrigation in some areas in Germany at present and increasingly in the future, towards 2070, due to climate change, with high variabilities among regions and soil types Münch et al 2014;Riediger et al 2016) (Table 7). Conflicts with other water uses can occur in drier years in northeastern Germany , restricted water extraction rights may hamper irrigation, and investments in irrigation infrastructure are less likely on rented land (Münch et al 2014).…”

Section: Irrigationmentioning

confidence: 99%

Pressures on soil functions from soil management in Germany. A foresight review

Techen

Helming

2017

Agron. Sustain. Dev.

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Global trends in demand for biomass-based food, feed, energy, and fiber call for a sustainable intensification of agricultural production. From the perspective of sustaining soil functions, this implies the integration of soil productivity with the other soil functions and services, namely carbon sequestration, water purification and retention, and nutrient and matter cycling as well as biodiversity. Soil management is the key to this integration. The proper anticipation of future opportunities and challenges for sustainable soil management requires an analysis of drivers and trends affecting soil management. Here, we review drivers and trends of soil management and their relevance for soil functions taking Germany as an example of industrialized agricultural systems with low yield gaps. We analyzed socio-economic, biophysical and technological drivers and identified two types of future management changes: (1) Quantitative changes, i.e., more or less of the same input factors, such as fertilizers, as part of a moderate intensification. (2) Qualitative changes: There, we found the strongest signals for the following practices: higher precision and lightweight machines triggered by information and communication technology (ICT) and robotics; diversification of crop rotations, including the integration of lignocellulosic crops; inoculation with biota; and new crop varieties. Positive practices may be reinforced by a behavioral trend towards sustainable soil management, driven by increasing awareness, knowledge, and consumer demand. They offer opportunities for relieving mechanical pressures from weight and contact stress, chemical pressures from pesticides and fertilizers and promoting soil biodiversity without compromising the soil's production function. We also found threats, such as increased removal of organic residues and potentially harmful organisms. This foresight study is the first to delineate opportunities and challenges for sustainable soil management and intensification. It informs researchers who intend to improve the knowledge base for reinforcement of positive and mitigation of negative trends of soil management.

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“…Nevertheless, irrigation is sometimes meaningful due to the heterogeneous spatial and temporal distribution of rainfall-and particularly for the cultivation of more water-demanding crops. In total, an area of about 516,000 ha is equipped for irrigation in Germany (and thereof 120,000 ha in Lower Saxony), mainly to reduce a soil moisture deficit during the most important growth stages of crops (Riediger et al 2016). Climate change in Germany is likely to increase soil water deficits at least temporally, while the availability of irrigation water is not expected to become critical in the near future even in the driest parts of Germany (Steidl et al 2015).…”

Section: Water In Agriculture and Forestrymentioning

confidence: 99%

Water research in Germany: from the reconstruction of the Roman Rhine to a risk assessment for aquatic neophytes

et al. 2017

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Germany does not only have a long tradition in water research, but a very active community of scientists and practitioners working on a vast range of ''water topics.'' This thematic issue, which was initiated by four water-related research associations (German Hydrological Society; German Limnological Society; Hydrological Sciences Commission within German Water Association; Working Group Hydrology within German Geographical Society), is a testimony of both the quality and diversity of the water research currently undertaken by Germany's scientific community. Key topics include hydrology and hydromorphology; water quality; aquatic and riparian ecosystems; water in agriculture and forestry; and water management and supply. The manuscripts contained in this thematic issue do not only cover a period of more than two millennia, but also address all types of water resources and a multitude of both established and newly developed methods that help us to better understand the processes governing the hydrological cycle, aquatic ecosystems and the management and operation of various water infrastructures.

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Modelling regional variability of irrigation requirements due to climate change in Northern Germany

Cited by 27 publications

References 27 publications

Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Pressures on soil functions from soil management in Germany. A foresight review

Water research in Germany: from the reconstruction of the Roman Rhine to a risk assessment for aquatic neophytes

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Modelling regional variability of irrigation requirements due to climate change in Northern Germany

Cited by 27 publications

References 27 publications

Ecohydrological modelling with EcH2O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Ecohydrological modelling with EcH2O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Pressures on soil functions from soil management in Germany. A foresight review

Water research in Germany: from the reconstruction of the Roman Rhine to a risk assessment for aquatic neophytes

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Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages

Ecohydrological modelling with EcH₂O‐iso to quantify forest and grassland effects on water partitioning and flux ages