不同管理方式荔枝遥感监测与空间变化研究

刘 序1; 雷百战 1; 陈鹏飞 2; 周灿芳 1

文章摘要

刘序1 ，雷百战 1 ，陈鹏飞 2 ，周灿芳 1.不同管理方式荔枝遥感监测与空间变化研究[J].广东农业科学,2022,49(8):145-154

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Study on Remote Sensing Monitoring and Spatial Variationof Litchi Under Different Management Modes

DOI：10.16768/j.issn.1004-874X.2022.08.018

中文关键词: 荔枝遥感监测不同管理方式空间迁移破碎度

英文关键词: litchi remote sensing monitoring different management modes spatial migration fragmentation

基金项目:广东省农业科学院协同创新中心项目（XTXM202201）；广东省乡村振兴战略专项资金（提升市县农业科技能力促进优势产业发展）荔枝产业攻关示范项目（403-2018-XMZC-0002-90）；广东省农业科学院“十四五”新兴学科团队项目（202124TD）；广东省农业科学院中青年学科带头人培养计划项目（R2020PY-JG014）

作者	单位
刘序1 ，雷百战 1 ，陈鹏飞 2 ，周灿芳 1	1. 广东省农业科学院农业经济与信息研究所 / 农业农村部华南都市农业重点实验室，广东广州 510640；2. 中国科学院地理科学与资源研究所，北京 100101

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中文摘要:

【目的】荔枝作为常绿果树，存在缺乏管理而沦为绿化树现象。准确了解和掌握荔枝种植区域的空间分布及空间变迁趋势，对荔枝产业空间布局优化、标准化管理等具有重要意义。【方法】以广州市增城区荔枝种植区域为例，利用遥感技术，对 2015、2019 年两期遥感影像进行目视解译，判断有人管理与无人管理荔枝种植区域的空间变化特征，借助重心迁移模型和破碎度指数定量分析荔枝时空变化程度。【结果】遥感解译总体精度较高，达到 86.54%。增城区荔枝种植面积减少 67.69 hm2 ，其中，有人管理荔枝种植面积减少 127.28 hm2 ，无人管理荔枝种植面积增加 59.59 hm2 。荔枝种植区域重心逐渐远离城镇，整体向东迁移 45.14 m、向北迁移 107.01 m，其中有人管理荔枝种植区域向西北迁移，无人管理荔枝种植区域向西南迁移。荔枝种植区域的破碎度指数从 2015 年的 0.0407 增加至 2019 年的 0.0413，空间分布呈现逐渐分散格局；但有人管理荔枝种植区域的破碎度指数从 0.0244 降低至 0.0238，空间上呈现聚集状态。【结论】利用遥感技术可以精准快速识别不同管理方式下荔枝种植区域的空间分布及变迁特征，为低效果园改造和标准化果园建设提供准确数据支撑，促进乡村产业兴旺。

英文摘要:

【Objective】Litchi, as an evergreen fruit tree, has become a landscaping tree due to lack of management. It is of great significance to the spatial layout optimization and standardized management of litchi industry by accurately understanding and mastering the spatial distribution and spatial variation trend of litchi planting areas.【Method】Taking the litchi planting areas in Zengcheng District of Guangzhou City as an example, the remote sensing technology was used to visually interpret the remote sensing images of 2015 and 2019, and the spatial variation characteristics of managed and unmanaged litchi planting areas were judged.The gravity center migration model and fragmentation index were used to quantitatively analyze the temporal and spatial variations of litchi planting areas.【Result】The overall accuracy of remote sensing interpretation is high, reaching 86.54 %. The planting areas of litchi in Zengcheng District are decreased by 67.69 hm2 , in which the planting areas of litchi with management are decreased by 127.28 hm2 and the planting areas of litchi without management are increased by 59.59 hm2 . Totally, the center of gravity of litchi planting areas gradually moves away from the town center, moving 45.14 m eastward and 107.01 m northward. Among them, the litchi planting areas with management move northwestward, and the litchi planting areas without management move southwestward. The fragmentation index of litchi planting areas increases from 0.0407 in 2015 to 0.0413 in 2019, and the spatial distribution shows a gradually dispersed pattern. However, the fragmentation index of litchi planting areas with management decreases from 0.0244 to 0.0238, showing a state of aggregation in space.【Conclusion】By using remote sensing technology, it can accurately and quickly identify the spatial distribution and variation characteristics of litchi planting areas under different management modes, provide accurate data support for inefficient orchard transformation and standardized orchard construction, and promote the prosperity of rural industries.

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