Analysis of Land Uses and Characteristics of River Bank Slope in the Plain Area of Jiangsu Province

DAI Mengmeng; LIANG Yin; TIAN Zhiyuan; GUO Hongli; YANG Yihui; LI Meng; GUO Wei; HE Yanzi

doi:10.13870/j.cnki.stbcxb.2022.02.018

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Analysis of Land Uses and Characteristics of River Bank Slope in the Plain Area of Jiangsu Province

更新时间：2024-11-07

- Analysis of Land Uses and Characteristics of River Bank Slope in the Plain Area of Jiangsu Province
- Vol. 36, Issue 2, Pages: 138-145(2022)
- 作者机构：
  
  1. 土壤与农业可持续发展国家重点实验室, 中国科学院南京土壤研究所,南京,210008
  2. 中国科学院大学现代农业科学学院,北京,100049
  3. 江苏省水文水资源勘测局,南京,210029
  4. 江苏省水利厅农水处,南京,210029
  5. 江苏省水文水资源勘测局宿迁分局,江苏,宿迁,223800
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.02.018
  CLC： TV85;X171.4
- Published：2022
- 稿件说明：
移动端阅览
DAI Mengmeng, LIANG Yin, TIAN Zhiyuan, et al. Analysis of Land Uses and Characteristics of River Bank Slope in the Plain Area of Jiangsu Province[J]. 2022, 36(2): 138-145.
DOI：

DAI Mengmeng, LIANG Yin, TIAN Zhiyuan, et al. Analysis of Land Uses and Characteristics of River Bank Slope in the Plain Area of Jiangsu Province[J]. 2022, 36(2): 138-145. DOI： 10.13870/j.cnki.stbcxb.2022.02.018.

摘要

河岸边坡是平原区水土流失的主要策源地

土地利用方式是影响边坡水土流失的重要外在因素

对河岸边坡利用类型的调查研究可为区域范围内边坡水土流失治理提供基础数据。基于42条河段的无人机航拍影像和野外实地调查数据

统计了江苏省4类河道不同利用方式下的河岸边坡面积

并分析了沙土区、非沙土区

以及不同水土保持区划的边坡利用特征。结果表明:(1)研究区内河岸边坡利用类型主要包括草地、林地、耕地、裸地、护坡工程用地和其他用地6类

面积占比分别为38.15%

34.45%

19.66%

6.10%

0.93%和0.70%

耕地和裸地面积占比合计达25.76%

表明河岸边坡受人为干扰强烈

存在严重的水土流失风险;(2)沙土区河岸边坡的林地、耕地和裸地面积占比分别比非沙土区高出11.77%

5.62%和4.43%

草地和护坡工程用地面积占比则分别低于非沙土区21.00%和0.63%

表明沙土区河岸边坡发生水土流失的潜在风险更大;(3)在相同河流长度范围内

北方土石山区的河岸边坡面积大于南方红壤区

其中草地和裸地面积占比分别比南方红壤区高出16.64%和8.00%

林地和耕地面积占比分别低于南方红壤区15.17%和10.08%。河岸边坡水土流失治理应根据各区环境特点

采取适宜的治理方式。研究结果可为区域河岸边坡治理方案的设计提供理论依据。

Abstract

River bank slope is the main source of soil and water loss in plain area. Land use is an important external factor affecting soil and water loss of slope. The study on land use of river bank slope can provide basic data for soil and water loss control in the region. Based on unmanned aerial vehicle (UAV) aerial images and field survey data

this study counted the areas under four land use types of rivers bank slope in Jiangsu Province

and analyzed the slope use characteristics of sandy soil area

non-sandy soil area and different soil and water conservation regionalizations. The results showed as follows:(1) The land uses of river slope in the study area mainly include grassland

woodland

cultivated land

bare land

slope protection land and others

and the corresponding proportions of each type were 38.15%

34.45%

19.66%

6.10%

0.93% and 0.70%

respectively. Farmland and bare land accounted for 25.76% of the total. It indicated that the river bank slope was strongly interfered by human beings

and there was a serious risk of soil erosion. (2) The proportions of woodland

farmland and bare land in sandy soil area were 11.77%

5.62% and 4.43% higher than those in non-sandy soil area

respectively. The proportions of grassland and slope protection land were 21.00% and 0.63% lower than those in non-sandy soil area

respectively

indicating that the potential risk of soil and water loss in sandy soil area was greater. (3) In the same river length range

the area of river slope in the northern rocky mountain area was larger than that in the southern red soil area. The proportions of grassland and bare land in the rocky mountain area were 16.64% and 8.00% larger than those of the red soil area. The proportions of woodland

farmland and slope protection land in the rocky mountain area were 15.17% and 10.08% lower than those of the red soil area. The appropriate measures should be adopted for soil erosion control according to the environmental characteristics of each region. This research can provide a theoretical basis for the design of regional river slope treatment.

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