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Forest and Grassland Resources Research ›› 2024›› Issue (5): 148-156.doi: 10.13466/j.cnki.lczyyj.2024.05.016

• Technical Application • Previous Articles     Next Articles

Assessment and Analysis of Carbon Storage in Aksu Kekeya Ecosystem Based on the InVEST Model

ZHANG Zhaoxiang1,2(), LUO Qinghong2, HE Miao2, NING Husen2, ZHANG Zhijun3, BAO Qiang4, SUN Qian1()   

  1. 1. College of Forestry and Landscape Architecture,Xinjiang Agricultural University,Urumqi 830052,China
    2. Institute of Afforestation and Sand Control,Xinjiang Academy of Forestry,Urumqi 830063,China
    3. Aksu area forestry development guarantee center,Aksu 842000,Xinjiang,China
    4. Aksu District Natural Resources Bureau,Aksu 842000,Xinjiang,China
  • Received:2024-08-02 Revised:2024-10-08 Online:2024-10-28 Published:2025-04-18

Abstract:

Ecosystem carbon storage is a key indicator of ecosystem function and plays a crucial role in maintaining regional carbon balance,guiding ecological restoration,and informing management strategies.This study aims to explore the spatial distribution characteristics of carbon storage in the Kekeya ecosystem and compare carbon storage across different ecosystem level susing 2020 land use data,forest inventory data,and standard plot survey data.Carbon storage in the Kekeya engineering area was assessed using the carbon module of the InVEST model.1)The total carbon density of the Kekeya engineering area is 71.76 t/hm2,with total carbon storage 8.27×106 t.Carbon storage across ecosystem levels is distributed as follows:soil carbon storage(6.16×106 t)>underground biological carbon storage(1.12×106 t)>above-ground biological carbon storage(9.64×105 t)>dead organic carbon storage(2.59×104 t).Carbon storage by land types is as follows:Forest land(6.21×106 t)>cultivated land(9.82×105 t)>grassland(5.56×105 t)>construction land(3.69×105 t)>unused land(1.07×105 t)>water area(4.32×104 t).2)Carbon storage in the Kekeya engineering area is spatially uneven,with the central,eastern and southeast regions exhibiting the highest storage,shows moderate storage,and the southwestern region has the lowest.Aboveground carbon storage in Kekeya engineering area is strongly positively correlated with the underground biomass layer and the soil carbon.The carbon storage within 60 cm of soil layer in the Kekeya engineering area are 6.16×106 t,accounting for 74.49% of the total carbon storage in the Kekeya ecosystem.Soil carbon is the main carbon pool in the Kekeya engineering area.Future ecological restoration efforts should prioritize expanding forested land and protecting cultivated land to enhance ecosystem stability and health in the Kekeya region.This approach provides valuable insights for designing ecological restoration projects in the Tarim River Basin.

Key words: InVEST model, carbon density, carbon storage, soil carbon, Kekeya

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