[1]黄 淇,牟凤云,张用川,等.基于ANN-CA模型的重庆市多级流域耕地景观格局演化及预测[J].水土保持研究,2023,30(01):379-387.[doi:10.13869/j.cnki.rswc.2023.01.035]
　HUANG Qi,MOU Fengyun,ZHANG Yongchuan,et al.Evolution and Prediction of Cultivated Land Landscape Pattern in Multi-level Watershed of Chongqing Based on ANN-CA model[J].Research of Soil and Water Conservation,2023,30(01):379-387.[doi:10.13869/j.cnki.rswc.2023.01.035]
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基于ANN-CA模型的重庆市多级流域耕地景观格局演化及预测

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 30 期数: 2023年01期 页码: 379-387 栏目: 出版日期: 2023-01-10
Title:
Evolution and Prediction of Cultivated Land Landscape Pattern in Multi-level Watershed of Chongqing Based on ANN-CA model
文章编号:
1005-3409(2023)01-0379-09
作者:
黄 淇1, 牟凤云1, 张用川1, 杨 猛2, 陈 林3, 王俊秀1, 田 甜1, 何清芸1
(1.重庆交通大学 智慧城市学院, 重庆 400074; 2.重庆市勘测院, 重庆 400020; 3.重庆市地理信息和遥感应用中心, 重庆 401147)
Author(s):
HUANG Qi1, MOU Fengyun1, ZHANG Yongchuan1, YANG Meng2, CHEN Lin3, WANG Junxiu1, TIAN Tian1, HE Qingyun1
(1.School of Smart City, Chongqing Jiaotong University, Chongqing 400074, China; 2.Chongqing Survey Institute, Chongqing 400020, China; 3.Chongqing Geographic Information and Remote Sensing Application Center, Chongqing 401147, China)
关键词:
多级流域尺度;  景观格局;  人工神经网络;  元胞自动机;  耕地
Keywords:
multilevel watershed scale;  landscape pattern;  artificial neural network;  cellular automata;  cultivated land
分类号:
S284
DOI:
10.13869/j.cnki.rswc.2023.01.035
文献标志码:
A
摘要:
为解决耕地演化的尺度效应问题,研究弥补现有不足,创新性地从多级流域尺度出发,基于ANN-CA模型对重庆市2000—2030年耕地景观格局演化进行模拟及预测,不仅为山区耕地的研究尺度提供新视角,且有助于解读重庆市耕地利用现状与趋势,为其耕地保护和规划提供参考。结果表明:(1)ANN-CA模型的模拟结果精度达89.33%,适用于模拟山区耕地演化研究;(2)在城市扩张、退耕还林和耕地撂荒多重影响下,2000—2020年重庆市耕地数量以先慢后快的速度由40 640.87 km2下降至38 590.33 km2,大部分转为城市建设用地,其次是林地、草地;(3)一级流域下,2000—2020年耕地规模均值由0.519缩减至0.491,耕地破碎度均值由0.217上升至0.233,耕地不规则度均值由0.311上升至0.336,耕地聚集度均值由0.657下降至0.620;(4)二级流域下,2000—2020年耕地规模均值由0.492下降至0.470; 耕地破碎度均值由0.157上升至0.164; 耕地不规则度均值由0.302上升至0.311; 耕地聚集度均值由0.646下降至0.630。重庆市耕地景观格局大致与一级流域相契合,但呈现更精细的空间两极分化特征,“一区”与“两群”内耕地景观格局时空演化的历史规律与未来趋势差异显著。研究结果有助于对耕地进行多级流域尺度分析,破解耕地演化的尺度效应问题,对其演化规律进行跨尺度推绎。
Abstract:
To solve the problem of scale effect of cultivated land evolution, this study made up for the existing shortcomings and innovatively starts from the multi-level watershed scale. The evolution of cultivated land landscape pattern in Chongqing from 2000 to 2030 was simulated and predicted based on Ann-ca model, which could not only provide a new perspective for the research scale of cultivated land in mountainous areas, but also help to interpret the current situation and trend of cultivated land utilization in Chongqing, and provide a reference for its cultivated land protection and planning. The results show that:(1)the accuracy of Ann-ca model is 89.33%, which is suitable for simulating the evolution of cultivated land in mountainous areas;(2)under the multiple impacts of urban expansion, conversion of farmland to forests, and farmland abandonment, from 2000 to 2020, the amount of cultivated land in Chongqing dropped from 40 640.87 km2 to 38 590.33 km2 at a first slow and then fast speed; most of the cultivated land was converted to urban construction land, followed by woodland, grassland;(3)in the first-class watershed, the scale of cultivated land decreased from 0.519 to 0.491, the fragmentation of cultivated land increased from 0.217 to 0.233, the irregularity of cultivated land increased from 0.311 to 0.336, and the aggregation of cultivated land decreased from 0.657 to 0.620;(4)in the secondary watershed, the average scale of cultivated land decreased from 0.492 to 0.470; the mean value of cultivated land fragmentation increased from 0.157 to 0.164; the mean value of cultivated land irregularity increased from 0.302 to 0.311; the mean value of cultivated land aggregation decreased from 0.646 to 0.630; the cultivated land landscape pattern in the secondary watershed was roughly consistent with that in the primary watershed, but presented more refined characteristics of spatial polarization; moreover, the historical law and future trend of temporal and spatial evolution of cultivated land landscape pattern in ‘one area' and ‘two groups' were significantly different. To sum up, the multi-level watershed scale analysis of cultivated land is helpful to solve the scale effect of cultivated land evolution and deduce its evolution law across scales.

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备注/Memo

收稿日期:2021-09-08 修回日期:2021-12-12
资助项目:重庆市自然科学基金面上项目(cstc2019jcyj-msxmX0626); 国家重点研计划项目(2019YFB2102502,2019YFB2102503); 重庆交通大学研究生科研创新项目(2022S0088)
第一作者:黄淇(1998—),女,重庆奉节人,硕士研究生,主要从事交通经济、国土资源遥感、3S技术集成与应用。E-maill:422879032@qq.com
通信作者:牟凤云(1979—),女,山东高密人,博士,教授,主要从事交通经济、国土资源遥感、3S技术集成与应用。E-mail:mfysd@cqjtu.edu.cn

更新日期/Last Update: 2023-01-10