IDEAS home Printed from https://ideas.repec.org/a/gam/jlands/v12y2023i6p1235-d1172289.html
   My bibliography  Save this article

Geographically and Ontologically Oriented Scoping of a Dry Valley and Its Spatial Characteristics Analysis: The Case of the Three Parallel Rivers Region

Author

Listed:
  • Linhao Zhang

    (School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

  • Haiping Tang

    (School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

  • Peijun Shi

    (State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
    Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining 810008, China)

  • Wei Jia

    (School of Geographical Science, Qinghai Normal University, Xining 810008, China)

  • Luwei Dai

    (School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
    State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

Abstract

A dry valley is a special landscape type that is formed by the combined effect of climate and topography. Accurately defining the scope of a dry valley and knowledge of its spatial distribution characteristics can provide data support for relevant studies in the region. Starting from natural ontological characteristics and formation mechanisms, we constructed a geographical ontological model of dry valleys through an analysis of concepts related to the dry valley and combined GIS technology and methods to accurately define the scope and analyze the spatial characteristics of the dry valleys in the Three Parallel Rivers Region (DVT). Our results show that: (1) The geographically and ontologically oriented method developed to define the scope of the dry valley has a high accuracy, with an overall accuracy of 92.3% and a kappa coefficient of 0.84, therefore it can provide a better mechanism for defining the scope of a dry valley on a large scale. (2) The total area and total length of the DVT are 6147.1 km 2 and 2125.3 km, respectively. The dry valleys in this region are mainly located in the Tibet Autonomous Region and in the Sichuan and Yunnan provinces in China. (3) The terrain in the DVT is precipitous, and areas with slopes greater than 25° account for 70% of the total area of the dry valleys. The DVT area of sunny aspects (north, northeast, and northwest aspects) is larger than that of shady aspects (south, southeast, and southwest aspects), and the land cover is mainly grassland with a desert substrate. The result of our study can provide data support for further in-depth research in related fields of dry valleys.

Suggested Citation

  • Linhao Zhang & Haiping Tang & Peijun Shi & Wei Jia & Luwei Dai, 2023. "Geographically and Ontologically Oriented Scoping of a Dry Valley and Its Spatial Characteristics Analysis: The Case of the Three Parallel Rivers Region," Land, MDPI, vol. 12(6), pages 1-17, June.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:6:p:1235-:d:1172289
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2073-445X/12/6/1235/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2073-445X/12/6/1235/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Chao Yang & Jianrong Fan & Jiali Liu & Fubao Xu & Xiyu Zhang, 2021. "Evaluating the Dominant Controls of Water Erosion in Three Dry Valley Types Using the RUSLE and Geodetector Method," Land, MDPI, vol. 10(12), pages 1-16, November.
    2. Weidong Ma & Wei Jia & Peng Su & Xingyun Feng & Fenggui Liu & Jing’ai Wang, 2021. "Mapping Highland Barley on the Qinghai–Tibet Combing Landsat OLI Data and Object-Oriented Classification Method," Land, MDPI, vol. 10(10), pages 1-15, September.
    3. Zhilian Gong & Yong Li & Luqing Liu & Shuang Deng, 2022. "Great Facilitation of Thirty Years of Reforestation with Mixed Species to Ecosystem Nitrogen Accumulation in Dry-Hot Valley in the Jinsha River," IJERPH, MDPI, vol. 19(19), pages 1-12, October.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Jiansong Luo & Min Xie & Qiang Wu & Jun Luo & Qi Gao & Xuezhi Shao & Yongping Zhang, 2024. "Early Crop Identification Study Based on Sentinel-1/2 Images with Feature Optimization Strategy," Agriculture, MDPI, vol. 14(7), pages 1-28, June.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Weidong Ma & Wei Jia & Yuantao Zhou & Fenggui Liu & Jing’ai Wang, 2022. "Prediction of Suitable Future Natural Areas for Highland Barley on the Qinghai-Tibet Plateau under Representative Concentration Pathways (RCPs)," Sustainability, MDPI, vol. 14(11), pages 1-21, May.
    2. Yuantao Zhou & Weidong Ma & Fenggui Liu & Jing’ai Wang, 2022. "Simulation and Evaluation of Hydrothermal Conditions in Crop Growth Period: A Case Study of Highland Barley in the Qinghai-Tibet Plateau," Sustainability, MDPI, vol. 14(10), pages 1-15, May.
    3. Feng Wang & Jintong Liu & Tonggang Fu & Hui Gao & Fei Qi, 2023. "Spatial-Temporal Variations in of Soil Conservation Service and Its Influencing Factors under the Background of Ecological Engineering in the Taihang Mountain Area, China," IJERPH, MDPI, vol. 20(4), pages 1-18, February.
    4. Shixian Xu & Xinjun Wang & Xiaofei Ma & Shenghan Gao, 2023. "Risk Assessment and Prediction of Soil Water Erosion on the Middle Northern Slope of Tianshan Mountain," Sustainability, MDPI, vol. 15(6), pages 1-14, March.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jlands:v:12:y:2023:i:6:p:1235-:d:1172289. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.