[1]刘珊珊,刀剑,张连刚,等.基于随机森林的水稻信息提取与空间格局分析[J].江苏农业科学,2024,52(20):104-112.
 Liu Shanshan,et al.Rice information extraction and spatial pattern analysis based on random forest[J].Jiangsu Agricultural Sciences,2024,52(20):104-112.
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基于随机森林的水稻信息提取与空间格局分析()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第52卷
期数:
2024年第20期
页码:
104-112
栏目:
作物遥感监测
出版日期:
2024-10-20

文章信息/Info

Title:
Rice information extraction and spatial pattern analysis based on random forest
作者:
刘珊珊1 刀剑23 张连刚1 付伟1
1.西南林业大学经济管理学院,云南昆明 650224; 2.云南农业大学植保学院,云南昆明 650500;3.云南省植物病理重点实验室,云南昆明 650500
Author(s):
Liu Shanshanet al
关键词:
水稻种植信息哨兵2号影像随机森林空间格局地形分布指数
Keywords:
-
分类号:
S127
DOI:
-
文献标志码:
A
摘要:
为准确了解岭南丘陵平原区水稻种植空间格局,以Sentinel-2A影像数据及耕地类型矢量数据为基础,采用随机森林(random forest,RF)对研究区水田范围内覆被地物进行分类,进而提取研究区水稻种植信息,以乡镇为空间单元尺度,分别从区域分布特征、空间破碎度、地形分布指数(P)3个方面统计分析其种植空间格局。结果表明:(1)基于RF结合Sentinel-2A数据获得的组合植被指数(NDVI和NDRE705)能够较好地对研究区水田掩膜后的影像进行覆被地物分类识别,分类的总体精度、Kappa系数分别为95.238%、0.926,其中水稻的用户精度最高,为98703%;根据提取结果得到水稻种植面积为12 529.797 hm2,占比为64.281%。(2)水稻种植区主要分布在石滩镇和中新镇,占比分别为21.149%、16.982%;增江街道水稻种植面积最少,仅占5.451%。(3)研究区水稻田块的破碎度在空间上的差异较为明显,破碎度高的水稻种植区域主要集中在研究区西部,而东部地区整体较低,在北部派潭镇、中部朱村街道、正果镇、荔城街道和增江街道以及南部的石滩镇,水稻种植地块破碎度相对较低,而中新镇、小楼镇和新塘镇反之。(4)水稻种植区分别在坡度0°~8°、高程0~32 m、半阳坡和阳坡(112.6°~247.5°)范围内处于优势水平,P值远大于1。研究成果可为制定区域国土管理制度和农业科学决策提供参考,对调整和优化水稻结构布局具有积极作用。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-11-03
基金项目:云南省科技计划基础研究专项(编号:202401CF070082);校级科研启动专项(编号:110223010);校级人文社科科研专项(编号:WKQN2309)。
作者简介:刘珊珊(1992—),女,山西大同人,博士,讲师,研究方向为农业遥感。E-mail:274881086@qq.com。
更新日期/Last Update: 2024-10-20