Large Scale Impacts of Grassland management and changes in livestock production systems_LiveM_Macsur_Bilbao_2014

Large Scale Impacts of Grassland management and changes in livestock production systems LiveM_Macsur_Bilbao_2014

Environment

Large scale impacts of grassland management and changes in livestock production systems
Susanne Rolinski, Isabelle Weindl, Jens Heinke, Benjamin Bodirsky, Anne Biewald and Hermann Lotze-Campen
15.10.2014

Grassland productivity and livestock production
MAgPIE
global agro-economical model
•feed baskets for livestock production systems
•livestock products
•landuse pattern
LPJmL
global vegetation and crop model
•grass growth and yield
•management of pasture

Grass in LPJmL
So far
•frequent mowing
•dependence on grass productivity
New
•mowing and grazing
•difference in frequency and intensity
•fate of NPP differs
 feedback of grazing and mowing on productivity

Grass management options
Default option
•harvest when leaf biomass > 100 g C m-2
•removed biomass is 50% of leaves
•goes to harvest  removal from paddock

Grass management options
Extensive grazing
•during the entire vegetation period grazing of biomass by cattle
•low density (~ 0.5 LSU ha-1)
•removed biomass goes to cattle, soil and atmosphere

Varying LSU ha-1
(g C m-2)
(g C m-2 a-1)
(g C m-2 a-1)
Average 1998 – 2002
Numbers: xx means x.x LSU ha-1

Varying LSU ha-1
(g C m-2 a-1)
(g C m-2 a-1)
(g C m-2)

Optimal LSU
maximum harvest under grazing
livestock density under which maximum harvest is achieved
(g C m-2 a-1)
(LSU ha-1)

Optimal LSU
maximum harvest under grazing
 9.3 GT C
livestock density under which maximum harvest is achieved
 13975 Mio LSU
(g C m-2 a-1)
(LSU ha-1)

Optimal LSU
… but the world is not only grassland
What is the potential compared to current numbers?
current landuse pattern
current numbers in land-based systems
current numbers in all systems
Livestock numbers (Mio LSU)
2754
44.7
256
Grass harvest (GT C)
1.75
0.07
0.32
multiply pasture area and sum
GLW data in production systems LGA, LGH, LGT and their grazing demand
same for all livestock production systems

Conclusion and Outlook
•Integrated assessment of livestock
•production
•feed demand
•impact on land use, water use, emissions, prices
•requires
•link of production system to feed baskets
•description of transitions in production systems and diets
Next steps:
 grassland management link to production systems
 transition between diets into landuse model
Special tribute to Pete Smith for sponsoring

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This document discusses sustainable beef cattle systems in Uruguay. It provides context on Uruguay's population, land use, and cattle numbers. Currently, beef production has increased 45% since 1980, but agricultural expansion has reduced natural grasslands to 70% of the country. This raises environmental priorities like climate change mitigation. The document then outlines the country's typical beef cattle rearing and production systems, from calving to slaughter. It identifies four common systems - two as "low feed, low/high costs" and two as "high feed, low/high costs." The international context of increasing demand for animal proteins is noted. Finally, it stresses the need for a clear, discussed vision of sustainable production that considers different regional resources

Maize-grain legume intercropping is an attractive option for ecological inten...

Leo Mhodzi

Maize-grain legume intercropping is an attractive option for smallholder farmers in central Mozambique to alleviate biophysical and socioeconomic constraints. Field experiments showed that within-row maize-pigeonpea and maize-cowpea intercropping systems improved productivity and income over sole cropping, especially in drought-prone years. Intercropping increased food security and profitability compared to sole crops. Farmers preferred within-row intercropping for its higher yields and food security benefits. Intercropping has potential to improve productivity, income, and food security for smallholders in central Mozambique's vulnerable production systems.

Success in feeding the world or source of social and environmental concern

M S Swaminathan Research Foundation

This document summarizes Peter Carberry's presentation on climate-smart agriculture. Some key points: - CSA aims to support food security under climate change by implementing flexible, context-specific solutions to changes in rainfall and temperature. - ICRISAT has developed climate-smart practices like drought-tolerant crop varieties, crop-livestock-tree systems, watershed development for irrigation, conservation agriculture, and using seasonal climate forecasts. - These practices have helped increase yields, resilience, and incomes of smallholder farmers in India and other countries facing water stress and climate risks. Adoption of short-duration chickpea varieties developed by ICRISAT increased production 5-7 times in Southern India

Livestock–water interactions: The case of Gumara Watershed in the upper Blue ...

International Water Management Institute (IWMI)

1) The document discusses livestock-water interactions in the Gumara watershed of Ethiopia. It assesses livestock water productivity (LWP) under different farming systems and management practices. 2) LWP varies between farming systems and is highest for wealthy farmers who practice early livestock off-take. Collective management of communal grazing lands, with regulated grazing and resting periods, helps sustain pasture quality and reduces runoff and soil loss. 3) Determinants of good pasture condition on communal lands include larger areas of restricted grazing land and lower oxen numbers per village. Proper management of communal grazing resources is important for mixed smallholder systems in water-scarce areas.

5. other ways we screw with agriculture! (good)

GURU CHARAN KUMAR

The document discusses several ways that human activities negatively impact land systems, including overgrazing, deforestation, feedlot agriculture, and unsustainable fishing practices. Overgrazing can degrade rangelands by removing too much plant cover, leading to erosion. Deforestation removes forests that stabilize soils and regulate water flows. Feedlot agriculture produces large amounts of waste and relies on chemical inputs. Unsustainable fishing has depleted fish populations in many areas. Better management is needed for rangelands and fisheries to restore soils and biodiversity.

Day 3.2 livestock impact livestock gf_rome (2)

Global Future & Strategic Foresight Program (GFSF)

This document provides an update on revisions made to the livestock module in the International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT) model. Key changes include: 1) Disaggregating livestock production systems to better represent heterogeneity. 2) Incorporating response functions so that meat and milk yields endogenously respond to changes in feed quantities and quality. 3) Accounting for total herd numbers, including replacement animals, and imposing explicit feed constraints. 4) Revising feed demand allocation to be responsive to feed prices and availability. Testing of the revised livestock module has shown promising results so far. Further validation and scenario analysis are planned in upcoming years.

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Gonzalo Becona - Global Roundtable for Sustainable Beef Uruguay Update

Maize-grain legume intercropping is an attractive option for ecological inten...

Success in feeding the world or source of social and environmental concern

Livestock–water interactions: The case of Gumara Watershed in the upper Blue ...

5. other ways we screw with agriculture! (good)

Day 3.2 livestock impact livestock gf_rome (2)

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