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Changing Trends of NDVI and Their Responses to Climatic Variation in Different Types of Grassland in Inner Mongolia from 1982 to 2011

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  • Jie Yang

    (College of Grassland and Environmental Economics, Inner Mongolia University of Finance and Economics, Hohhot 010020, China
    School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    Jie Yang and Zhiqiang Wan are co-first authors of the article.)

  • Zhiqiang Wan

    (College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China
    Jie Yang and Zhiqiang Wan are co-first authors of the article.)

  • Suld Borjigin

    (School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China)

  • Dong Zhang

    (School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China)

  • Yulong Yan

    (School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China)

  • Yali Chen

    (School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
    Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China)

  • Rui Gu

    (College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010020, China)

  • Qingzhu Gao

    (Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China
    Key Laboratory for Agro-Environment and Climate Change, Ministry of Agriculture, Beijing 100081, China)

Abstract

Normalized difference vegetation index (NDVI) is commonly used to indicate vegetation density and condition. NDVI was mostly correlated with climate factors. We analyzed changing trends of NDVI in different types of grassland in Inner Mongolia and the response of NDVI to climatic variation from 1982 to 2011. NDVI of meadow steppe increased significantly in spring while it decreased in other seasons. The annual mean NDVI in typical steppe and desert steppe increased significantly in the last 30a. However, in the greatest area of steppe desert, the NDVI had no significant change in summer, autumn, and the growing season. In meadow steppe, typical steppe, and desert steppe, the area showed a positive correlation of NDVI to temperature as highest in spring compared to other seasons, because warming in spring is beneficial to the plant growth. However, in the greatest area of steppe desert, the correlation of NDVI to temperature was not significant. The NDVI was positively correlated to precipitation in four types of grassland. In the steppe desert, the precipitation had no significant effect on the NDVI due to the poor vegetation cover in this region. The NDVI was not significantly correlated to the precipitation in autumn because of vegetation withering in the season and not need precipitation. Precipitation was a more important factor rather than temperature to NDVI in the region. The response of NDVI to temperature and precipitation in different seasons should be studied in more detail and the effect of other factors on NDVI should be considered in future research.

Suggested Citation

  • Jie Yang & Zhiqiang Wan & Suld Borjigin & Dong Zhang & Yulong Yan & Yali Chen & Rui Gu & Qingzhu Gao, 2019. "Changing Trends of NDVI and Their Responses to Climatic Variation in Different Types of Grassland in Inner Mongolia from 1982 to 2011," Sustainability, MDPI, vol. 11(12), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:12:p:3256-:d:239337
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    Citations

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    Cited by:

    1. Zhifang Pei & Shibo Fang & Wunian Yang & Lei Wang & Mingyan Wu & Qifei Zhang & Wei Han & Dao Nguyen Khoi, 2019. "The Relationship between NDVI and Climate Factors at Different Monthly Time Scales: A Case Study of Grasslands in Inner Mongolia, China (1982–2015)," Sustainability, MDPI, vol. 11(24), pages 1-17, December.
    2. Yan Li & Jie Gong & Yunxia Zhang & Bingli Gao, 2022. "NDVI-Based Greening of Alpine Steppe and Its Relationships with Climatic Change and Grazing Intensity in the Southwestern Tibetan Plateau," Land, MDPI, vol. 11(7), pages 1-16, June.
    3. Yating Zhao & Chunming Hu & Xi Dong & Jun Li, 2023. "NDVI Characteristics and Influencing Factors of Typical Ecosystems in the Semi-Arid Region of Northern China: A Case Study of the Hulunbuir Grassland," Land, MDPI, vol. 12(3), pages 1-21, March.
    4. Li Wang & Jie Pei & Jing Geng & Zheng Niu, 2019. "Tracking the Spatial–Temporal Evolution of Carbon Emissions in China from 1999 to 2015: A Land Use Perspective," Sustainability, MDPI, vol. 11(17), pages 1-27, August.

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