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Hakim Abdi. Foto.

Hakim Abdi

Forskare

Hakim Abdi. Foto.

Estimating Grazing Potentials in Sudan Using Daily Carbon Allocation in Dynamic Vegetation Model

Författare

  • Niklas Boke-Olén
  • Veiko Lehsten
  • Abdulhakim M. Abdi
  • Jonas Ardö
  • Abdelrahman A. Khatir

Summary, in English

Livestock production is important for local food security and as a source of income in sub-Saharan Africa. The human population of the region is expected to double by 2050, and at the same time climate change is predicted to negatively affect grazing resources vital to livestock. Therefore, it is essential to model the potential grazing output of sub-Saharan Africa in both present and future climatic conditions. Standard tools to simulate plant productivity are dynamic vegetation models (DVMs). However, as they typically allocate carbon to plant growth at an annual time step, they have a limited capability to simulate grazing. Here, we present a novel implementation of daily carbon allocation for grasses into the DVM Lund-Potsdam-Jena General Ecosystem Simulator (LPJ-GUESS) and apply this to study the grazing potential for the Kordofan region in Sudan. The results show a latitudinal split in grazing resources, where the northern parts of Kordofan are unexploited and southern parts are overused. Overall, we found that the modeled grazing potential of Kordofan is 16% higher than the livestock usage reported in the Food and Agricultural Organization of the United Nations, indicating a mitigation potential in the form of a spatial relocation of the herds.

Avdelning/ar

  • Institutionen för naturgeografi och ekosystemvetenskap
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • MERGE: ModElling the Regional and Global Earth system

Publiceringsår

2018-08-01

Språk

Engelska

Sidor

792-797

Publikation/Tidskrift/Serie

Rangeland Ecology and Management

Volym

71

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

Society of Environmental Toxicology and Chemistry

Ämne

  • Physical Geography
  • Environmental Sciences

Nyckelord

  • Sudan
  • Climate change
  • grazing
  • Kordofan
  • livestock
  • LPJ-GUESS
  • Africa
  • Sahel
  • Drylands

Status

Published

Projekt

  • Global Savannah Phenology: Integrating Earth Observation, Ecosystem Modeling, and PhenoCams

ISBN/ISSN/Övrigt

  • ISSN: 1550-7424