张天媛, 沈石, 程昌秀, 叶思菁. 2000—2015年雅鲁藏布江流域耕地格局动态变化影响因素分析[J]. 北京师范大学学报(自然科学版), 2023, 59(1): 136-146. DOI: 10.12202/j.0476-0301.2022126
引用本文: 张天媛, 沈石, 程昌秀, 叶思菁. 2000—2015年雅鲁藏布江流域耕地格局动态变化影响因素分析[J]. 北京师范大学学报(自然科学版), 2023, 59(1): 136-146. DOI: 10.12202/j.0476-0301.2022126
ZHANG Tianyuan, SHEN Shi, CHENG Changxiu, YE Sijing. Dynamic changes and influencing factors of farmland pattern in Yarlung Zangbo River basin from 2000 to 2015[J]. Journal of Beijing Normal University(Natural Science), 2023, 59(1): 136-146. DOI: 10.12202/j.0476-0301.2022126
Citation: ZHANG Tianyuan, SHEN Shi, CHENG Changxiu, YE Sijing. Dynamic changes and influencing factors of farmland pattern in Yarlung Zangbo River basin from 2000 to 2015[J]. Journal of Beijing Normal University(Natural Science), 2023, 59(1): 136-146. DOI: 10.12202/j.0476-0301.2022126

2000—2015年雅鲁藏布江流域耕地格局动态变化影响因素分析

Dynamic changes and influencing factors of farmland pattern in Yarlung Zangbo River basin from 2000 to 2015

  • 摘要: 基于30 m分辨率的卫星遥感土地利用数据,利用地理探测器和地理加权逻辑回归方法,探究了2000—2015年雅鲁藏布江流域的耕地格局动态变化及其影响因素.结果表明:1) 雅鲁藏布江流域被占用的耕地主要分布在拉萨市(60.42%)、林芝市(16.21%)和山南市(13.01%)的城市周边区域,多变为水体和建设用地;补充的耕地主要分布在日喀则市(55.81%)、林芝市(23.26%)和拉萨市(19.61%),多由林地和草地转入.2)经济发展、交通基础设施和行政辐射主要影响耕地占用;国家投资变化、行政辐射和海拔主要影响耕地补充.3)耕地变化的影响因素存在明显的空间异质性.其中农业劳动力流失、旅游业发展和粗放式耕作等因素是耕地变化面临的主要问题.建议在拉萨和林芝的市郊地带强化保护后备耕地,在日喀则给予资金与技术培训等农业政策倾向,以实现雅鲁藏布江流域区域差异化的耕地保护管理.

     

    Abstract: The Yarlung Zangbo River basin (YZRB) is a major agricultural area on the Tibetan Plateau.Analysis of dynamic changes of YZRB farmland pattern and influencing factors is of great significance to ensure self-sufficiency of grain and stable development of social environment in Tibet.The 30 m land use data were used in geodetector and geographically weighted logistic regression to analyze farmland requisition-compensation dynamic and influencing factors in YZRB from 2000 to 2015.Farmland requisition was found to have mainly occurred in peri-urban area of Lhasa (60.42%), Nyingchi (16.21%), and Lhoka (13.01%), mostly have transformed into waters and urban areas.Farmland compensation mainly distributed in Xigaze (55.81%), Nyingchi (23.26%), and Lhasa (19.61%), mostly from forest and grassland.Economic development, transportation infrastructure, and administrative factors mainly influenced farmland requisition.Investment, administrative and elevation factors mainly influenced farmland compensation.Spatial stratified heterogeneity was apparent in driving factors of farmland dynamics.Labor force transfer, tourism development, and backward farming concepts were main farmland development problems faced by Xigaze, Lhasa, and Nyingchi, respectively.This study elucidates farmland requisition-compensation dynamic and could guide high-quality coordinated development of agriculture in the Tibetan Plateau.The reserve farmland in the suburbs of Lhasa and Nyingchi should be protected, while agricultural policy tendencies such as capital and technical training should be given in Xigaze, to realize differential protection and management of farmland in the YZRB.

     

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