福建长汀河田盆地林下水土流失区的遥感判别
发布时间：2018-07-24 12:00
【摘要】：国内外对林下水土流失区域判别技术的研究很少,利用计算机进行林下水土流失的自动识别更是一个尚待解决的难题。该文利用遥感技术,选取典型的土壤侵蚀区福建省长汀县河田盆地为研究区,综合考虑植被覆盖度、植被健康度和坡度3个因素,建立林下水土流失判别模型,提取了河田盆地林下水土流失区,实现了林下水土流失面积的定量估算和动态监测。结果表明,河田盆地林下水土流失区主要分布于缓坡地带;2011—2014年间,林下水土流失总面积占林地总面积比例由22.13%减少至21.94%,同比下降0.19个百分点,但是在缓坡地带,该比例回升了3.19个百分点。总体来说,河田盆地的林下水土流失状况有一定改善。
[Abstract]:At home and abroad, there are few researches on regional discrimination of soil and water loss under forest, and it is a difficult problem to use computer to identify soil and water loss automatically under forest. Based on remote sensing technology, a typical soil erosion area of Changting County, Fujian Province, in which the Hetian Basin of Changting County, Fujian Province was selected as the study area, was used to establish a discriminant model of soil and water loss under the forest, taking into account three factors, vegetation coverage, vegetation health and slope. The soil and water loss area under the forest in the river basin was extracted, and the quantitative estimation and dynamic monitoring of soil and water loss area under the forest were realized. The results show that the soil and water loss area under the forest in Hetian basin is mainly distributed in the gentle slope zone from 2011 to 2014. The proportion of the total area of soil erosion under the forest to the total area of forest land is reduced from 22.13% to 21.94%, which is 0.19% lower than that of the previous year, but in the gentle slope area, The ratio rose by 3.19 percentage points. Generally speaking, the soil and water loss under the forest in the river basin has been improved to some extent.
【作者单位】： 福州大学环境与资源学院;福州大学遥感信息工程研究所;福建省水土流失遥感监测评估与灾害防治重点实验室;
【基金】：国家科技支撑项目(2013BAC08B01-05) 福建省教育厅重点项目(JA13030)
【分类号】：S157;TP79
本文编号：2141313
[Abstract]:At home and abroad, there are few researches on regional discrimination of soil and water loss under forest, and it is a difficult problem to use computer to identify soil and water loss automatically under forest. Based on remote sensing technology, a typical soil erosion area of Changting County, Fujian Province, in which the Hetian Basin of Changting County, Fujian Province was selected as the study area, was used to establish a discriminant model of soil and water loss under the forest, taking into account three factors, vegetation coverage, vegetation health and slope. The soil and water loss area under the forest in the river basin was extracted, and the quantitative estimation and dynamic monitoring of soil and water loss area under the forest were realized. The results show that the soil and water loss area under the forest in Hetian basin is mainly distributed in the gentle slope zone from 2011 to 2014. The proportion of the total area of soil erosion under the forest to the total area of forest land is reduced from 22.13% to 21.94%, which is 0.19% lower than that of the previous year, but in the gentle slope area, The ratio rose by 3.19 percentage points. Generally speaking, the soil and water loss under the forest in the river basin has been improved to some extent.
【作者单位】： 福州大学环境与资源学院;福州大学遥感信息工程研究所;福建省水土流失遥感监测评估与灾害防治重点实验室;
【基金】：国家科技支撑项目(2013BAC08B01-05) 福建省教育厅重点项目(JA13030)
【分类号】：S157;TP79
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1 乔玉良;水土流失区土地利用动态的遥感监测——以晋西三川河流域为例[J];环境遥感;1992年03期
，本文编号：2141313
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