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Arid Land Geography ›› 2023, Vol. 46 ›› Issue (6): 922-933.doi: 10.12118/j.issn.1000-6060.2022.442

• Ecology and Environment • Previous Articles     Next Articles

Impacts of urban and rural construction on ecosystem productivity in Inner Mongolia Plateau from 2000 to 2020

SA Rigai1,2(),BAO Yuhai1,2(),DOU Yinyin3,DONG Yulin3,PAN Tao3,4,KUANG Wenhui3   

  1. 1. College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, Inner Mongolia, China
    2. Inner Mongolia Key Laboratory of Remote Sensing & Geography Information System, Inner Mongolia Normal University, Hohhot 010022, Inner Mongolia, China
    3. Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, Beijing, China
    4. Qufu Normal University, Rizhao 276826, Shandong, China
  • Received:2022-09-06 Revised:2022-10-31 Online:2023-06-25 Published:2023-07-24

Abstract:

The monitoring of human urban and rural construction activities in the Inner Mongolia Plateau, China and the scientific assessment of their impact on regional ecosystem productivity have important scientific and practical significance for the construction of the national northern ecological barrier. Based on satellite images, land use data, meteorological observation data, and auxiliary information, this study assessed the impacts of the expansion and speed of urban and rural construction on the ecosystem productivity in the Inner Mongolia Plateau from 2000 to 2020 using dynamic attitude analysis and neighborhood substitution methods. The results show that: (1) The area of urban and rural construction land (URCL) in 2020 was 18206.49 km2, accounting for 1.46% of the total area of the Inner Mongolia Plateau. (2) In the past 20 years, the area of URCL expansion was 7462.99 km2, of which 59.76% came from the expansion of industrial land. URCL mainly occupied natural and cultivated ecosystems, in which urban land and rural residential land mostly occupied cultivated ecosystems, while industrial land mainly occupied grassland and desert ecosystems. (3) From 2000 to 2020, the total loss of net primary productivity (NPP) caused by human urban and rural construction activities reached 143.51×104 tC in the Inner Mongolia Plateau. Industrial land activity is the main cause of NPP loss of natural ecosystems and increased from 60.72% in 2000—2010 to 73.91% in 2010—2020. Compared to 2000—2010, the NPP loss was alleviated in the cropland ecosystem but intensified in the grassland ecosystem in 2010—2020. (4) The NPP loss of Mu Us Sandy Land, Hulunbuir Sandy Land, Otindag Sandy Land, and Horqin Sandy Land were mainly caused by industrial land expansion. However, due to the impact of urban greening, the NPP of the ecosystem around the city increased slightly. The urban population, gross domestic product (GDP), and related policies led to the continuous expansion of URCL, which has a certain impact on ecosystem NPP. This study has an important reference value for urban and rural construction and ecological civilization construction, and ecological protection in the Inner Mongolia Plateau.

Key words: urban and rural construction, ecosystem, NPP loss, Inner Mongolia Plateau