干旱区研究

Arid Zone Research >

2024 , Vol. 41 >Issue 6: 1059 - 1068

DOI: https://doi.org/10.13866/j.azr.2024.06.14

Ecology and Environment

Spatiotemporal pattern of NEP in Aksu River Basin based on PLUS land use simulation

  • LI Peiyao ,
  • WANG Xinjun ,
  • XU Shixian ,
  • GAO Shenghan ,
  • XUE Zhixuan ,
  • HENG Rui
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  • 1. Xinjiang Key Laboratory of Soil and Plant Ecological Processes General Station of Soil, Xinjiang Agricultural University, Urumqi 830052, Xinjiang, China
    2. Xinglin (Beijing) Forestry Engineering Design and Research Institute Co., Ltd., Beijing 100000, China
    3. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China

Received date: 2023-10-28

  Revised date: 2024-05-21

  Online published: 2024-07-03

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Abstract

Net Ecosystem Productivity (NEP) is a crucial indicator for assessing the carbon sequestration capacity of terrestrial ecosystems, and Land Use/Cover Change (LUCC) is a key factor influencing regional differences in carbon uptake. Analyzing the trends of LUCC and NEP is essential for achieving regional carbon peaking and carbon neutrality goals. Based on the LUCC and MODIS remote sensing data from 2000 to 2020 in the Aksu River Basin, the annual average carbon sequestration rate of each land use/cover type in the region was estimated. The LUCC for the next 40 years was simulated by the PLUS model, and the spatial and temporal trend of NEP for the next 40 years in the river basin was predicted. The results show that: (1) the total NEP in the basin has shown an increasing trend in the past 20 years, with an uptake rate of 0.136 Mt C·(10a)-1, and the average carbon sequestration rate of forest area is the highest; (2) the total carbon uptake in the Aksu River Basin will continue to increase in the future 40 years. The increase in forest area is the main way of increasing carbon uptake in the Aksu River Basin, and the positive role of ecological protection projects plays a key role in this process.

Key words： NEP; LUCC simulation; PLUS model; Aksu River Basin

Cite this article

LI Peiyao , WANG Xinjun , XU Shixian , GAO Shenghan , XUE Zhixuan , HENG Rui . Spatiotemporal pattern of NEP in Aksu River Basin based on PLUS land use simulation[J]. Arid Zone Research, 2024 , 41(6) : 1059 -1068 . DOI: 10.13866/j.azr.2024.06.14

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