Spatial Dynamic Changes of Soil Erosion and Its Countermeasures in Xi'an City

FENG Xiao-gang; LI Rui

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Spatial Dynamic Changes of Soil Erosion and Its Countermeasures in Xi'an City

- Spatial Dynamic Changes of Soil Erosion and Its Countermeasures in Xi'an City
- Bulletin of Soiland Water Conservation Vol. 29, Issue 6, Pages: 107-111(2010)
- 作者机构：
  
  1. 陕西师范大学旅游与环境学院,陕西,西安,710062
  2. 中国科学院水利部水土保持研究所,陕西,西安,710055
  3. 西安建筑科技大学, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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FENG Xiao-gang, LI Rui. Spatial Dynamic Changes of Soil Erosion and Its Countermeasures in Xi'an City[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 107-111.
DOI：

FENG Xiao-gang, LI Rui. Spatial Dynamic Changes of Soil Erosion and Its Countermeasures in Xi'an City[J]. Bulletin of Soiland Water Conservation, 2010, 29(6): 107-111. DOI：

摘要

以RS和GIS技术为支撑

以TM/ETM+为遥感数据源

结合DEM及土壤类型数据

并以西安市水土流失动态变化为研究对象

采用多源数据相结合的研究方法

提取了西安市1988

1997和2002年3个时相研究区的坡度、植被盖度、土地利用类型等因子

在确定土壤侵蚀解译标志的基础上

制作了土壤侵蚀空间分布图

并对土壤侵蚀数量特征、空间变化特征及其趋势进行了分析。结果表明:(1)1988—2002年14a间西安市微度侵蚀面积持续减少

中度以上侵蚀面积由1988年的26.83%上升为2002年的37.03%

呈明显的上升趋势。(2)1988—2002年14a间西安市空间侵蚀分布大格局变化较小

1997年相比1988年最明显的变化是城镇周围土壤侵蚀由微度向轻度发展;2002年轻中度范围较1988和1997年均有扩大

主要分布在白鹿原、少陵原及城市周边地带;(3)结合西安市水土流失空间变化特征

提出了坚持以生态环境恢复为目标的科学规划和综合治理等5项治理措施

为水土流失治理提供参考。

Abstract

This study was conducted based on the data of TM/ETM+

combined with the DEM and soil type of Xi'an City

and supported by RS and GIS technology.By taking soil erosion dynamics and its countermeasures as study object

factors of slope

vegetation cover

and land use

as well as other factors in 1988

1997

and 2002 were extracted.According to soil erosion interpretation

a soil erosion map was drawn by the ARCGIS and spatial characteristics of soil erosion and its trend in future were analyzed.Results are shown as follows.(1)The area for light erosion presented a decreasing trend from 1988 to 2002 and the area for moderate erosion increased from 26.83% in 1988 to 37.03% in 2002

showing a significant upward trend.(2)Spatial distribution pattern of soil erosion in Xi'an City changed little in the past 14 years.Compared to 1988

the most obvious change in 1997 was the soil erosion around the city.The expanded area of light and moderate soil erosion in 2002 was greater compared with 1988 and 1997

mainly in Bailu Plateau

Shaoling Plateau

and the periphery of the city.(3)Combined with spatial variations of soil characteristics in Xi'an City

five measures restoring ecological environment

such as scientific planning and comprehensive management

were proposed to provide a reference to soil erosion control.

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