[口头报告]Mapping the ratoon rice suitability region in China using random forest and recursive feature elimination modeling

Mapping the ratoon rice suitability region in China using random forest and recursive feature elimination modeling
编号:233 稿件编号:1634 访问权限:私有 更新:2023-04-07 21:15:34 浏览:208次 口头报告

报告开始:2023年05月06日 16:10 (Asia/Shanghai)

报告时间:10min

所在会议:[7B] 7B、遥感与地理信息科学 » [7B-1] 7B-1 遥感与地理信息科学

演示文件

提示:该报告下的文件权限为私有,您尚未登录,暂时无法查看。

摘要
Ratoon rice (RR), a planting mode that allows paddy rice to be harvested twice in the same stubble, offers greater benefits and lower input costs compared with those of double-season rice (DR) and single-season rice. Yet, it is uncertain where RR is suitable for distribution in China. Hence, the objectives were to map the regions suitable for RR at the national level, clarify the optimal factor combinations and dominant controlling factors, and estimate potential paddy rice planting regions/areas that are more suitable for RR compared to DR. This study proposed a combination of recursive feature elimination (RFE) method and random forest (RF) model. The RFE, an effective feature selection method, was employed to filter optimal factor combinations for RR and DR, respectively. Then, with the assistance of parameter optimization and 10-fold cross-validation, the optimal RF model was utilized to determine which regions of China are suitable for RR and DR, and which regions have a suitability of RR greater than that of DR, hence are more suitable for planting RR. The results showed that the RFE-RF model was able to map accurate suitability regions with confusion matrix and AUC value of RR and DR over 0.9. Accumulated temperature greater than 0°C, mean temperature of warmest, fraction of photosynthetically active radiation and accumulated temperature greater than 10°C were the key variables affecting the suitability distribution of RR. The total area of high and very high suitable for RR and DR were 49.01 million hectares (Mha) and 37.08 Mha, respectively. Regions more suitable for RR than DR were mainly located in the Sichuan Basin, southeastern Hubei and central Anhui, with high and very high suitable area of 23.21 Mha. These results indicate that RR has a large potential planting area in China. Making full use of climate resources and expanding the planting area of RR will be beneficial to increase annual yield and reduce environmental pollution.
关键字
Suitability region,Ratoon rice,China,Random Forest,Recursive feature elimination
报告人
王月
西南大学

稿件作者
王月 西南大学
李月臣 西南大学
陈晋 北京师范大学
赵荣坤 中国农业科学院
发表评论
验证码 看不清楚,更换一张
全部评论

联系我们

会务总协调、疫情防控:

沈焕锋(13163235536;shenhf@whu.edu.cn)

管小彬(18007973663;guanxb@whu.edu.cn)

魏秀琴(15871750333;weixiuqin@whu.edu.cn)

会场安排:

沈焕锋(13163235536;shenhf@whu.edu.cn)

李长冬(15327198910;lichangdong2008@126.com)

张 亮(15827200707;lzhang@whigg.ac.cn)

徐 鹏(13554674258;xupengwhu@whu.edu.cn)

学术安排:

王伦澈(13349889828;wang@cug.edu.cn)

庄艳华(13349889826;zhuang@apm.ac.cn)

李星华(15527964369;lixinghua5540@whu.edu.cn)

会议注册:

管小彬(18007973663;guanxb@whu.edu.cn)

赵 林(18071070948;linzhao@whu.edu.cn)

会议财务:

张传喜(13627137374;zhangchuanxi@whu.edu.cn)

石玉婷(13476286537;yutingshi@vip.qq.com)

商业赞助:

阮志敏(15871826028;ruanzm@whu.edu.cn)

黄文丽(13693626212;wenli.huang@whu.edu.cn)

会议服务,酒店预定,网站、注册系统服务:

曹雪峰(18971567453;carol@chytey.com)

金钰壹(18271358859;jinyuyi@whu.edu.cn)

会务总协调、疫情防控:
沈焕锋(13163235536;shenhf@whu.edu.cn)
管小彬(18007973663;guanxb@whu.edu.cn)
魏秀琴(15871750333;weixiuqin@whu.edu.cn)
会场安排:
沈焕锋(13163235536;shenhf@whu.edu.cn)
李长冬(15327198910;lichangdong2008@126.com)
张 亮(15827200707;lzhang@whigg.ac.cn)
徐 鹏(13554674258;xupengwhu@whu.edu.cn)
学术安排:
王伦澈(13349889828;wang@cug.edu.cn)
庄艳华(13349889826;zhuang@apm.ac.cn)
李星华(15527964369;lixinghua5540@whu.edu.cn)
会议注册:
管小彬(18007973663;guanxb@whu.edu.cn)
赵 林(18071070948;linzhao@whu.edu.cn)
会议财务:
张传喜(13627137374;zhangchuanxi@whu.edu.cn)
石玉婷(13476286537;yutingshi@vip.qq.com)
商业赞助:
阮志敏(15871826028;ruanzm@whu.edu.cn)
黄文丽(13693626212;wenli.huang@whu.edu.cn)
会议服务,酒店预定,网站、注册系统服务:
曹雪峰(18971567453;carol@chytey.com)
金钰壹(18271358859;jinyuyi@whu.edu.cn)
注册缴费 提交稿件