Land Use/Cover Change and Its Effects on Hydrologic Processes in Nuomin River Basin

SHI Xiao-liang; LI Ying; ZHAO Kai; ZHANG Guang-xin; ZHANG Dan; ZHU Hong-lei

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Land Use/Cover Change and Its Effects on Hydrologic Processes in Nuomin River Basin

- Land Use/Cover Change and Its Effects on Hydrologic Processes in Nuomin River Basin
- Bulletin of Soiland Water Conservation Vol. 32, Issue 1, Pages: 23-28(2013)
- 作者机构：
  
  1. 中国科学院东北地理与农业生态研究所,吉林,长春,130012
  2. 中国科学院大学,北京,100049
  3. 黑龙江省齐齐哈尔水文局,黑龙江,齐齐哈尔,161005
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
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SHI Xiao-liang, LI Ying, ZHAO Kai, et al. Land Use/Cover Change and Its Effects on Hydrologic Processes in Nuomin River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 23-28.
DOI：

SHI Xiao-liang, LI Ying, ZHAO Kai, et al. Land Use/Cover Change and Its Effects on Hydrologic Processes in Nuomin River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 23-28. DOI：

摘要

流域土地利用/覆被变化及其水文效应是当前全球变化研究的重要内容。为正确认识大兴安岭森林采伐对水文过程的影响

以诺敏河流域为例

在遥感和地理信息系统技术支持下

结合地形图和卫星遥感影像数据

获取1954—2005年诺敏河流域5期土地利用/覆被数据

在GIS空间分析模块下分析诺敏河流域土地利用/覆被变化过程

并探讨土地利用/覆被变化对水文过程的影响。结果表明

近50a诺敏河流域土地利用方式发生了明显变化

林地和草地分别减少1 940.1km

和748.99km

与林草地的大面积减少相对应

耕地面积增加2 741.7km

。自1998年实施大兴安岭天然林保护工程以后

林地采伐和耕地开垦速率明显降低;土地利用/覆被变化影响年径流量

林地大规模减少、耕地明显增加的后期土地利用较前期径流量有所增加

且随着降雨的增多

土地利用变化对径流的影响效应随之增强。同一降雨条件下土地利用/覆被变化对径流的影响在生长季具有明显差异。

Abstract

Land use/cover change and its effects on hydrologic processes are becoming an important aspect of global change research.In order to understand the effects of deforestation on hydrologic processes in theDaxing'anling area

a five-stage land use/cover date base in the Nuomin River basin since 1954was established based on remote sensing imagery data and topographic map.With GIS spatial analysis tools

the paperanalyzed the land use/cover change characteristics and its effects on hydrologic process.Results indicatedthat land use changed prominently in the Nuomin River basin during the past five decades.Forest and grassland decreased by 1 940.10and 748.99km2

respectively

and in contrast

cropland increased by 2 741.7km2.Since the nature forest protection project came into force in the Daxing'anling area in 1998

woodlandreduction and farmland reclamation have showed a declined trend.Land use/cover change had effects on annual runoff and runoff increased during the late land use period with decreased forest and more cropland

andthe impact of land use/cover change on runoff was strengthened in response to increased rainfall.Besides

the effects of land use/cover change on runoff production were characterized by seasonal fluctuation.

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