Monitoring Soil Erosion in Linear Production and Construction Project Areas Based on RUSLE-A Case Study of North Ring Expressway in Ningbo City, Zhejiang Province

ZHANG Tao; JIN Degang; TONG Guangchen; LIN Jie; TANG Peng; LI Luping

doi:10.13961/j.cnki.stbctb.2016.05.029

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Monitoring Soil Erosion in Linear Production and Construction Project Areas Based on RUSLE-A Case Study of North Ring Expressway in Ningbo City, Zhejiang Province

- Monitoring Soil Erosion in Linear Production and Construction Project Areas Based on RUSLE-A Case Study of North Ring Expressway in Ningbo City, Zhejiang Province
- Bulletin of Soiland Water Conservation Vol. 36, Issue 5, Pages: 131-135(2016)
- 作者机构：
  
  1. 宁波市水利水电规划设计研究院,浙江,宁波,315192
  2. 南京林业大学林学院,江苏,南京,210037
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.05.029
  CLC：
- Published：2016
- 稿件说明：
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ZHANG Tao, JIN Degang, TONG Guangchen, et al. Monitoring Soil Erosion in Linear Production and Construction Project Areas Based on RUSLE-A Case Study of North Ring Expressway in Ningbo City, Zhejiang Province[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 131-135.
DOI：

ZHANG Tao, JIN Degang, TONG Guangchen, et al. Monitoring Soil Erosion in Linear Production and Construction Project Areas Based on RUSLE-A Case Study of North Ring Expressway in Ningbo City, Zhejiang Province[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 131-135. DOI： 10.13961/j.cnki.stbctb.2016.05.029.

摘要

[目的

]

全面调查浙江省宁波市北环快速路施工前后及施工过程中土壤侵蚀时空变化状况，为今后线状生产建设项目水土保持遥感监测提供参考。[方法

]

分别利用2010年宁波市土地利用/覆盖类型图、道路图及调查数据，结合项目区地形图和实测高程点生成的数字高程模型（DEM）、实测土壤属性数据、水文站降雨数据等资料分别获取RUSLE模型中各因子值的空间分布，然后通过RUSLE模型计算项目区3个不同阶段的土壤侵蚀量，最后进行分类统计。[结果

]

项目施工前期和自然恢复期的土壤侵蚀均以微度侵蚀为主，所占项目面积比例分别为98.53%和99.73%；而施工期的土壤侵蚀等级以轻度和微度侵蚀为主，两者分别占项目区面积的52.5%和35.4%；项目施工期的平均土壤侵蚀模数为1 380.9 t/（km

·a），远高于施工前及施工期后的251.3，155.4 t/（km

·a）。[结论

]

项目施工期土壤侵蚀区域主要分布在临时堆土区，进一步分析发现坡度因素对土壤侵蚀空间分布具有重要影响。

Abstract

[Objective] In order to provide references for the future remote sensing monitoring of soil and water conservation of the linear production and construction project in Ningbo City of Zhejiang Province

it is crucial to investigate the spatio-temporal distribution of soil erosion in ring expressway before and after construction and construction process.[Methods] Land use/cover map of Ningbo City in 2010

topographic map

map of North Ring expressway and field survey data was collected to derive digital elevation model (DEM). Rainfall data was collected from local hydrological station. Based on the collected data

the spatial distribution of the factors in RUSLE model was calculated

and soil erosion maps of the north ring expressway were estimated. Then

the soil erosion amount was calculated at three different stages by using RUSLE model.[Results] Slight erosion was dominant during preconstruction period and natural recovery period

which accounted for 98.53% and 99.73%

respectively. During construction period

mild erosion and slight erosion was the largest

which accounted for 52.5% and 35.4%

respectively. The average soil erosion modulus of construction period was 1 380.9 t/(km2·a)

which was 251.3 and 155.4 t/(km2·a) higher than that of preconstruction period and nature recovery period

respectively.[Conclusion] Soil erosion during the construction period is mainly distributed in the temporary soil ground. Furthermore

the terrain factor has an important influence on the spatial distribution of soil erosion.

关键词

Keywords

references

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