| 红壤丘陵区典型小流域侵蚀景观时空变化分析——以福建长汀县朱溪河小流域为例 |
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| 引用本文： | 邹爱平,陈志彪,陈丽慧.红壤丘陵区典型小流域侵蚀景观时空变化分析——以福建长汀县朱溪河小流域为例[J].中国水土保持科学,2009,7(2):93-99. |
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| 作者姓名： | 邹爱平 陈志彪 陈丽慧 |
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| 作者单位： | 福建师范大学地理科学学院,350007,福州 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 基于1999年和2007年2期数字化侵蚀景观类型图，在ArcGIS 9．0的支持下，提取朱溪河小流域侵蚀景观类型转移矩阵，并结合重心模型，从时间和空间上对侵蚀景观动态变化进行定量分析，结果表明：1）1999年、2007年朱溪河小流域侵蚀景观基质均为微度侵蚀，轻度、中度、强度、极强度和剧烈侵蚀作为斑块单元镶嵌其中；2）1999—2007年，微度和轻度侵蚀的面积均有显著增加，其中微度侵蚀面积增加量最大，主要由轻度转化而来，且主要分布于小流域东部；中度、强度、极强度和剧烈侵蚀面积均有减少，其中剧烈侵蚀面积减少率最大，主要向轻度转化，且高度聚集于小流域上游的游屋圳和高陂坡次一级小流域；3）1999-2007年期间，剧烈侵蚀重心迁移距离最大，轻度、中度和极强度的重心向西南偏移，微度重心向东北偏移，强度重心向东南偏移。人类活动是该流域侵蚀景观时空变化的主要驱动因素。
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| 关 键 词： | 侵蚀景观 转移矩阵 重心模型 驱动力 朱溪河小流域 |
Spatio-temporal variation of eroded landscape in typical small watershed in the hilly region of red soil: A case study of Zhuxihe Small Watershed in Changting County, Fujian Province |
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| Zou Aiping,Chen Zhibiao,Chen Lihui.Spatio-temporal variation of eroded landscape in typical small watershed in the hilly region of red soil: A case study of Zhuxihe Small Watershed in Changting County, Fujian Province[J].Science of Soil and Water Conservation,2009,7(2):93-99. |
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| Authors: | Zou Aiping Chen Zhibiao Chen Lihui |
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| Institution: | School of Geographical Science,Fujian Normal University,350007,Fuzhou,China |
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| Abstract: | Zhuxihe Small Watershed in the hilly region of red soil was chosen as the typical study area.Based on the soil erosion data of 1999 and 2007,the transfer matrix of eroded landscape types were extracted by using ArcGIS 9.0 software,and the spatio-temporal variation of eroded landscape was analyzed by using barycenter transfer model.The analyse on watershed landscape variation will provide important bases for ecological construction in future.The statistics on areas and percentages of landscape types show that slight erosion has been dominating landscape pattern inlaid by some small pieces of light,moderate,strong,very strong and severe erosion in 1999 and 2007.The analysis on transfer matrix of landscape pattern shows that the areas of slight and light erosion increased,among which the slight erosion in the eastern part of watershed increased most greatly with most stemming from light erosion.It is found that the areas of moderate,strong,very strong and severe erosion decreased,among which the area of severe erosion decreased most rapidly,and it has resulted in the converting of severe erosion into moderate erosion.This phenomenon mainly appears in the sub-watershed of upper reaches of Zhuxihe Small Watershed,including Youwuzhen and Gaopiduan. The study on barycenter transfer model indicates that the barycenter transfer distance of severe erosion was the furthest from 1999 to 2007,the barycenter transfer direction of light,moderate and very strong erosion was southwest,and the barycenter transfer direction of strong erosion was southeast,only the barycenter transfer stern vally direction of slight erosion was northeast.Human activity is the main driving factor for the dynamic variation of spatial pattern of landscape in this area. |
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| Keywords: | eroded landscape transfer matrix barycenter transfer model driving forces Zhuxihe Small Watershed |
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