GPSトラックデータを利用した農道および農家の移動経路の判別手法と経路選択の評価  [in Japanese] A Novel Use of GPS Track Data to Detect and Evaluate Village Footpaths to Fragmented Farm Lands and Route Selections by Farmers  [in Japanese]

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Author(s)

    • 佐藤 赳 SATO Takeshi
    • 東京大学大学院農学生命科学研究科 Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • 高橋 太郎 TAKAHASHI Taro
    • 東京大学大学院農学生命科学研究科 Graduate School of Agricultural and Life Sciences, The University of Tokyo
    • 山田 七絵 YAMADA Nanae
    • (独)日本貿易振興機構アジア経済研究所 Institute of Developing Economies, Japan External Trade Organization

Abstract

<p>圃場分散は,多くの地域において農業の生産性を低下させると考えられているが,その十分な解決の方策は講じられていない.圃場分散の影響を正確に評価し,社会経済的な改善施策を検討するためには,圃場の位置や道路地図といった集落全体での地理情報と,各農家の実際の通作経路を把握することが望ましい.本研究では,GPSトラックデータを用いて圃場と農道および各農家の移動経路を判別し,農家の経路選択を評価する一連の新手法を開発した.その手法を重度の圃場分散に直面する中華人民共和国の農村に適用したところ,圃場分散が通作時間を増大させ,一部の農家は勾配の大きな経路を避け遠回りとなる経路を選択していたことが明らかになった.</p>

<p>Farmland fragmentation is considered to have negative impacts on agricultural productivity in many parts of the world, yet innovative solutions to the problem are few and far between. A prerequisite to quantify the magnitude of these negative effects and draw socially and economically optimal policy strategies is to acquire accurate geographic information such as the location of farming farm lands, the connection of roads and footpaths, and the time required for farmers to reach their multiple farm lands. In this study, we developed a new methodology to spatially detect individual farm lands, village footpaths and farmers' commuting routes to farm lands, and then applied the proposed algorithm to an original set of GPS track data from Yunnan, China, where very little geographical information was available despite a high degree of land fragmentation faced by local farmers. Our analysis of farmers' route selections revealed that, under the condition that farmland fragmentation increases the commuting time, some villagers make long detours to avoid steep slopes on their way to farm lands.</p>

Journal

  • Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering

    Transactions of The Japanese Society of Irrigation, Drainage and Rural Engineering 86(1), I_35-I_45, 2018

    The Japanese Society of Irrigation, Drainage and Rural Engineering

Codes

  • NII Article ID (NAID)
    130006391752
  • NII NACSIS-CAT ID (NCID)
    AA12240517
  • Text Lang
    JPN
  • ISSN
    1882-2789
  • NDL Article ID
    029165692
  • NDL Call No.
    Z18-365
  • Data Source
    NDL  J-STAGE 
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