| 基于GIS的慈溪市土壤侵蚀敏感性评价 |
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| 引用本文： | 杨新华,王侃,李加林,贾琼琼,李天昊,杨雪玲.基于GIS的慈溪市土壤侵蚀敏感性评价[J].水土保持通报,2016,36(4):210-215. |
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| 作者姓名： | 杨新华 王侃 李加林 贾琼琼 李天昊 杨雪玲 |
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| 作者单位： | 1. 宁波大学城市科学系,浙江宁波315211;宁波大学生态环境研究所,浙江宁波315211;2. 宁波大学生态环境研究所,浙江宁波,315211;3. 宁波大学城市科学系,浙江宁波,315211 |
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| 基金项目： | 国家自然科学基金项目“围垦对杭州湾南岸潮滩湿地沉积地貌过程的影响”（40701006），“围垦影响下的象山港潮汐汊道潮盆系统沉积动力学研究”（41171073） |
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| 摘 要： | 目的]对影响浙江省慈溪市土壤侵蚀敏感性的各因素进行评价,为该市进行环境功能区划和各项水土保持措施工程的布局调整提供参考。方法]借鉴土壤侵蚀流失USLE模型,选取降雨侵蚀力、土壤质地、植被覆盖和地形起伏度4因子构建土壤侵蚀敏感性评价体系,并运用GIS进行土壤侵蚀敏感性分析。结果]慈溪市土壤侵蚀敏感性在空间格局上呈半圆环状结构分布,并且轻度敏感区面积为733.05km2,占比高达75.70%,广泛分布于平原乡镇地区;不敏感区主要分布于近海滩涂区域,极敏感、高度敏感及中度敏感区则位于南部的丘陵、山地地区。结论]慈溪市土壤侵蚀敏感性评价结果与水土流失现状空间分布走势大致相符,为此应重视和预防水土保持工作。
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| 关 键 词： | 土壤侵蚀 敏感性评价 地理信息系统 慈溪市 |
| 收稿时间： | 2016/2/27 0:00:00 |
| 修稿时间： | 4/4/2016 12:00:00 AM |
A GIS-based Assessment on Soil Erosion Sensitivity in Cixi City |
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| YANG Xinhu,WANG Kan,LI Jialin,JIA Qiongqiong,LI Tianhao and YANG Xueling.A GIS-based Assessment on Soil Erosion Sensitivity in Cixi City[J].Bulletin of Soil and Water Conservation,2016,36(4):210-215. |
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| Authors: | YANG Xinhu WANG Kan LI Jialin JIA Qiongqiong LI Tianhao and YANG Xueling |
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| Institution: | Urban Science Department, Ningbo University, Ningbo, Zhejiang 315211, China;Institute of Eco-environmental Science, Ningbo University, Ningbo, Zhejiang 315211, China,Institute of Eco-environmental Science, Ningbo University, Ningbo, Zhejiang 315211, China,Urban Science Department, Ningbo University, Ningbo, Zhejiang 315211, China,Urban Science Department, Ningbo University, Ningbo, Zhejiang 315211, China;Institute of Eco-environmental Science, Ningbo University, Ningbo, Zhejiang 315211, China,Urban Science Department, Ningbo University, Ningbo, Zhejiang 315211, China;Institute of Eco-environmental Science, Ningbo University, Ningbo, Zhejiang 315211, China and Institute of Eco-environmental Science, Ningbo University, Ningbo, Zhejiang 315211, China |
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| Abstract: | Objective] Through evaluating the impact factors of soil erosion sensitivity for the Cixi City of Zhejiang City, references for conducting the environmental functional zoning and the layout of water conservation measure were expected to be provided. Methods] According to the USLE model, rainfall erosion force, soil texture, vegetation cover and terrain fluctuation were selected to construct sensitivity evaluation system of soil erosion. Moreover, GIS was employed to analyze soil erosion sensitivity. Results] Results showed a semicircle structure in the spatial distribution pattern of soil erosion sensitivity in Cixi City. The area of slight sensitivity was 733.05 km2, accounting for a high percentage of 75.7%, which was widely distributed in the villages and towns of plain area. The insensitive part located in the offshore area of tidal flat. The areas of extreme sensitive, high sensitive and moderate sensitive were mainly distributed in the hill and mountain regions of the southern part of Cixi City. Conclusion] The results of sensitivity evaluation were in accord with the spatial distribution of soil water loss, indicating that more attentions should be paid to the conservation of soil and water. |
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| Keywords: | soil erosion sensitivity evaluation GIS Cixi City of Zhejiang City |
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