摘要
为了厘清不同地形与地貌的土地利用变化及其变化轨迹的分异特征,以贵州省为研究区,基于1995、2000、2005、2010、2015和2018年土地利用数据以及地貌和数字高程模型数据,运用地形位指数、地形分布指数、土地利用程度综合指数以及土地利用图谱法,对研究区土地利用在不同的地形、地貌梯度时的分异特征开展研究。结果表明:贵州省土地利用结构以林地、耕地和草地为主;在地形梯度上,耕地、水域和建设用地多集中于低梯度区,草地和林地则分布于较高梯度区域,未利用地多位于中梯度区,随着时间的推移,低、中梯度区草地面积增加,林地逐渐向中、高梯度区转移,水域、耕地和建设用地由高梯度区向中低梯度区转移;不同地貌条件下,建设用地、林地、草地和未利用地的优势分布区未发生明显变化,耕地和水域则呈现增加态势;在土地利用程度的地形分异特征上,地貌类别和高程对土地利用程度无明显影响;土地利用变化图谱以稳定型和后期变化型为主,不同土地类型的时空分布和变化受地形、地貌因子和人类活动的影响显著,呈现选择性分布。
To clarify differentiation characteristics of land use change and its change track on different terrains and landforms,taking Guizhou province as the research area and based on land use data of 1995,2000,2005,2010,2015,and 2018 as well as landform and digital elevation model data,terrain potential index,terrain distribution index,comprehensive index of land use degree,and land use map method were used to research the differentiation characteristics of land use with different terrain and landform gradients in the research area.The results show that the main land use structure in Guizhou province is woodland,cultivated land,and grassland.On the terrain gradient,the cultivated land,water area,and construction land are mostly concentrated in low gradient area,while the grassland and woodland are distributed in higher gradient area.The unused land mainly concentrates in medium gradient area.As time changes,the grassland area increases in low and medium gradient areas.The woodland gradually transfers to medium and high gradient areas.The water area,cultivated land,and construction land move from high gradient area to medium and low gradient area.Under different landform conditions,the dominant distribution area of construction land,woodland,grassland,and unused land does not change significantly in the whole stage,while the cultivated land and water area show an increasing trend.On the terrain differentiation characteristics of land use degree,landform type and elevation have no obvious influence on land use degree.On the land use change map,stable and late change type are main types.The spatial and temporal distribution and change of different land types are affected by terrain and landform factors as well as human activities to some extent,which shows a selective distribution.
作者
廖艳梅
兰安军
尹林江
钟九生
LIAO Yanmei;LAN Anjun;YIN Linjiang;ZHONG Jiusheng(School of Geography and Environmental Science,Guizhou Normal University,Guiyang 550025,Guizhou,China;State Engineering Technology Institute for Karst Desertification Control,Guizhou Normal University,Guiyang 550001,Guizhou,China;School of Karst Science,Guizhou Normal University,Guiyang 550001,Guizhou,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2021年第6期552-565,共14页
Journal of University of Jinan(Science and Technology)
基金
国家自然科学基金项目(41661081)
贵州省科技支撑计划项目([2016]2595-2)。
关键词
地形
地貌
土地利用变化
分异特征
贵州省
terrain
landform
land use change
differentiation characteristic
Guizhou province
