| 2000—2020年三峡库区腹地人地耦合土地系统演变机制 |
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| 引用本文： | 汪荣,李阳兵,邵景安,郑骆珊,陈艳,王清荣,赵雯欣.2000—2020年三峡库区腹地人地耦合土地系统演变机制[J].农业工程学报,2024,40(10):255-264. |
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| 作者姓名： | 汪荣 李阳兵 邵景安 郑骆珊 陈艳 王清荣 赵雯欣 |
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| 作者单位： | 重庆师范大学地理与旅游学院,重庆 401331;重庆师范大学地理与旅游学院,重庆 401331;三峡库区地表过程与环境遥感重庆市重点实验室,重庆 401331 |
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| 基金项目： | 国家社科基金重大项目（20&ZD096） |
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| 摘 要： | 基于人地耦合土地系统转型研究框架,采用耦合协调度模型、景观指数与二元Logistic回归模型等方法,探究人地耦合视角下三峡库区腹地土地系统演变规律,揭示其影响机制,从而归纳人地耦合土地系统数量—景观格局—功能转型模式。研究结果表明：1）2000—2020年,三峡库区腹地人类活动强度由逐渐增强转变为逐渐减弱,人地耦合关系总体表现为向协调型平缓发展。在空间上,呈现出中部与东北部趋于协调型、北部趋于拮抗型、南部变化不明显的分异特征;2）人地耦合土地系统数量—景观格局—功能形态发生了明显的变化。拮抗区和失调区耕地总体减少,减少量分别为21 263、40 029 hm2。其中,拮抗区林地恢复性增长,增长量为89 648 hm2。失调区林地呈先增加后减少的波动变化,总体增长16 054 hm2。协调区果园明显扩张,增长量为13 856 hm2;斑块破碎化程度改善,趋于规则;土地系统由单功能主导向多功能转变;3）研究区人地耦合土地系统转型模式呈现多元化,可归纳为：拮抗区：林地恢复-斑块聚集不规则-生态;失调区：林地缩减-斑块聚集规则-生态主导;协调区：果园扩张-斑块聚集、整体规则-生态经济;4）距离与地形是影响土地系统演变的决定性因素,主导因子之间交互产生叠加效应,共同促进土地系统的变化。研究揭示了三峡库区人地耦合关系发展规律与土地系统转型模式,对促进山区土地资源合理利用与人地协调发展具有现实意义。
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| 关 键 词： | 土地利用 景观格局 演变 相关性 三峡库区 |
| 收稿时间： | 2023/8/20 0:00:00 |
| 修稿时间： | 2024/3/15 0:00:00 |
Evolution mechanism for human-land coupling land system in the hinterland of the Three Gorges Reservoir Area from 2000 to 2020 |
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| WANG Rong,LI Yangbing,SHAO Jing''an,ZHENG Luoshan,CHEN Yan,WANG Qingrong,ZHAO Wenxin.Evolution mechanism for human-land coupling land system in the hinterland of the Three Gorges Reservoir Area from 2000 to 2020[J].Transactions of the Chinese Society of Agricultural Engineering,2024,40(10):255-264. |
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| Authors: | WANG Rong LI Yangbing SHAO Jing'an ZHENG Luoshan CHEN Yan WANG Qingrong ZHAO Wenxin |
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| Institution: | School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China;School of Geography and Tourism, Chongqing Normal University, Chongqing 401331, China;Chongqing Key Laboratory of Surface Process and Environmental Remote Sensing in Three Gorges Reservoir Area, Chongqing 401331, China |
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| Abstract: | Land use transformation can be clarified under the human-land coupling system, in order to promote the high-quality development and sustainable land use. In this study, the coupling coordination degree model, landscape index and binary logistic regression were adopted to explore the land system evolution and influence mechanism in the hinterland of the Three Gorges Reservoir Area from 2000 to 2020. The transformation of human-land coupling land system was also summarized in the context of human-land coupling, in terms of quantity, landscape pattern, and functional form. The results show that: 1) The intensity of human activities were a gradual increase to decrease with a consequent evolution in the human-land coupling relationship. In general terms, the human-land relationship showed a gentle trend towards a coordinated type of change. There was the differential evolution of spatial distribution, which was tended to be coordinated in the central and northeastern, the northern was tended to be antagonistic, and there was no outstanding change in the southern. 2) The human-land coupling land system shared the outstanding change in the quantity, landscape pattern and function after the construction of the Three Gorges Project, particularly on the returning cultivated land to forest and grassland. The cultivated land decreased in the antagonistic and the imbalanced area, part of which was the abandoned land. The woodland increased restoratively in the antagonistic area. But there was the fluctuating evolution in the imbalanced area, where the first increased and then decreased. whereas, the orchard was expanded significantly in the coordinated area. The degree of patch fragmentation was improved to be regular landscape pattern. Land systems were evolved from the mono-functional dominance to multi-functional. 3) There was the diversified transformation of the human-land coupling land system in the study area. Patterns were also summarized as follows. The antagonistic area with woodland increased in the quantity form, while the patches were aggregated with the ecological function and irregular form of landscape pattern; The imbalanced area with the woodland decreased, whereas, the patches were aggregated to regularly and ecologically orient; The coordinated area with orchard expanded, while the patches were overall aggregated regularly, ecologically and economically. 4) Distance and topography were the influencing factors on the evolution of land system. The cultivated and abandoned land decreased, whereas, the woodland increased, as the distance from the settlement and the topographic relief increased. The orchard decreased with the increase of elevation. In addition, the interaction among the dominant factors was superimposed on the land system. The development mode of human-land coupling relationship and land system transformation in the Three Gorges Reservoir Area can be of practical significance to promote the rational use of land resources and the coordinated development of human-land in mountainous areas. |
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| Keywords: | land use landscape pattern evoution correlation Three Gorges reservoir area |
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