文章摘要信息

[an error occurred while processing this directive]

世界地质 2022, 41(4) 873-881 DOI: ISSN: 1004-5589 CN: 22-1111/P

本期目录 | 下期目录 | 过刊浏览 | 高级检索 [打印本页] [关闭]

基础地质

	扩展功能

	本文信息
	Supporting info
	PDF(780KB)
	[HTML全文]
	参考文献[PDF]
	参考文献
	服务与反馈
	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	引用本文
	Email Alert
	文章反馈
	浏览反馈信息
	本文关键词相关文章

	免耕
	秸秆覆盖率
	Sentinel--2
	保护性耕作
	遥感分类
	吉林省中部
	本文作者相关文章
	沈峰
	石璞
	井逢瑞
	PubMed
	Article by Shen F
	Article by Shi P
	Article by Jing F

基于 Sentinel--2 影像的吉林省中部黑土区保护性耕作范围的遥感识别

沈峰，石璞，井逢瑞

吉林大学地球科学学院，长春 130061

摘要：针对黑土区保护性耕作范围识别和监测方法的缺失问题，笔者选择位于吉林省中部的公主岭市和梨树县为研究区，通过耕地地表图像采集，构建了一种基于纠缠随机森林模型的秸秆覆盖率图像识别方法，获取研究区秸秆覆盖率数据集，并据此建立基于 Sentinel--2 遥感光谱指数的保护性耕作范围识别模型 ( 支持向量机和逻辑回归) ，实现了黑土区保护性耕作范围的遥感反演与空间表征。结果表明: ①由于 “梨树模式”的高成效推广，该县免耕地块占比高达 72. 86% ，而公主岭市免耕地块仅占 36. 03% ; ②免耕方式的推行带来了地表秸秆覆盖率的提升，免耕地块的秸秆覆盖率均值较非免耕地块高 2 倍以上，但仍然有 40% 左右的免耕地块存在秸秆覆盖率＜ 4% 的情况; ③利用逻辑回归模型获得了耕作方式的高精度分类，其预测生成的保护性耕作范围空间分布图显示梨树县保护性耕作的绝对面积 ( 1. 95 × 105 hm2 ) 和保护性耕作占耕地总面积的比例 ( 77. 79% ) 均高于公主岭市 ( 1. 02 × 105 hm2 ，30. 01% ) 。

关键词：免耕秸秆覆盖率 Sentinel--2 保护性耕作遥感分类吉林省中部

Ｒemote sensing identification of conservation tillage extent in black soil region in central Jilin Province based on Sentinel--2 image

SHEN Feng，SHI Pu，JING Fengrui

College of Earth Sciences，Jilin University，Changchun 130061，China

Abstract: To address the lack of methods for identifying and monitoring the extent of conservation tillage in black soil region，the authors selected the Gongzhuling City and Lishu County in central Jilin Province as the study area． Based on the entangled random forest model through surface image collections of cropland a straw cover rate image identification method is constructed and the straw cover rate dataset is obtained in the study area． A conservation tillage extent identification model ( Support Vector Machine and Logistic Ｒegression) is established on the basis of the Sentinel--2 remote sensing spectral index accordingly． Finally，the remote sensing inversion and spatial representation of the conservation tillage extent in black soil region are realized． The results show that ① the proportion of no-tillage plots in the county is as high as 72. 86% due to the highly effective promotion of “Lishu model”，while that in Gongzhuling City accounts for only 36. 03% ; ② the implementation of the no-tillage method has brought about an increase in straw cover rate on the surface of cropland，with the average value of straw cover rate on no-tillage plots being more than twice as high as on non-no-tillage plots，but there are still about 40% of notillage plots with straw cover rate ＜ 4% ; ③ the logistic regression model was used to obtain a high-precision classification of tillage practices，and the spatial distribution map of conservation tillage extent generated by its prediction shows that the absolute area of conservation tillage and the proportion of conservation tillage to total cropland area in Lishu County ( 1. 95 × 105 hm2 and 77. 79% ) were larger and higher than those in Gongzhuling City ( 1. 02 × 105 hm2 and 30. 01% ) ．

Keywords: no-tillage straw cover rate Sentinel--2 conservation tillage remote sensing classification central Jilin Province

收稿日期 修回日期 网络版发布日期

DOI:

基金项目:

通讯作者:

作者简介:

作者Email:

参考文献：

本刊中的类似文章

1．王晓亮，陈军典,程识,吴文彬,李超,刘永俊,李海洋,王玉平,吕行. 辽东半岛金家岭花岗岩体 LA--ICP--MS 锆石 U--Pb 年代学、地球化学特征及地质意义[J]. 世界地质, 2023,42(1): 11-25

2．方旭庆,曲希玉,刘英男，苗长盛. 东营北带盐家—永安地区沙四上亚段物源区构造背景及其储层差异性[J]. 世界地质, 2023,42(1): 80-91

3．贾培蒙,林鹤鸣,刘培,邱欣卫,沈梦蓉，郝国丽,徐川. 珠江口盆地恩平 13--14 洼文昌期构造转换及其对沉积充填的控制作用[J]. 世界地质, 2023,42(1): 92-103