干旱区生态环境知识资源中心(Arid): 基于GIS的石羊河流域森林生态效益估算与空间分布特征研究

Arid

	基于GIS的石羊河流域森林生态效益估算与空间分布特征研究
其他题名	Valuation of forest ecological benefit and distributing pattern in Shiyang River Basin Based on GIS
	赵军; 陈姗
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2011
卷号	34 期号:1 页码:12-19
中文摘要	利用GIS技术和数据空间化方法,通过Kriging插值获得石羊河流域平均降水量栅格图层,并以石羊河流域森林类型栅格数据为基础,结合相关统计资料,运用ArcGIS栅格计算功能及聚类方法生成石羊河流域森林涵养水源,保持水土,固碳制氧等生态效益分布图,在此基础上综合各个栅格图层,得到全流域森林生态效益量分布图,直观地反映研究区森林生态效益的空间分布状况.研究表明:石羊河流域单位面积林地生态系统服务价值约0.73*104元.hm-2.a-1,相对较低;在空间分布上,流域森林生态系统服务价值量具有两区三中心的格局特征,高值区主要分布于上游的祁连山地区,低值区分布在从山麓地带向北到北部荒漠区的广大地区,表现出与植被景观分布格局类似的垂向地带性;服务价值的3个高值中心分布在西大河,西营河和金塔河上游河谷及附近海拔2 000~3 000 m的区域,与该地带水热分布随海拔变化的规律有密切关系,就森林生态系统服务而言,祁连山地区在整个石羊河流域中具有非常重要的作用
英文摘要	The Shiyang River basin is one of important river basins in arid region of Northwest China. But because of the over-utilization of water resources and irrational water allocation, vegetation degradation and desertification issue in the lower reaches are very serious. So the river regulation and the protection of ecological environment are extremely urgent. In view of the serious ecological environment problem, this paper takes advantage of the technique of GIS and the method of data spatialization, obtains the mean precipitation raster layers of Shiyang River basin by Kriging interpolation. And based on Shiyang River basin forest types raster data, and in combination with relevant statistical information, then by using ArcGIS Grid computing and clustering approach, generates ecological benefit distribution maps which is about the conservation of water resources, about the value of soil conservation, the value of CO2 fixation and O2 production and so on. Based on these data and synthesizing every raster layer,we get the forest ecological benefit volume distribution map in Shiyang River basin,to give a visual interpretation of spatial distribution condition of research district forest ecological benefit. The result shows that: the service valuation of forest ecosystem in unit area of Shiyang River basin is about 7.30 thousand Yuan·hm-2·a-1, which is relatively low. Spatially, the service valuation of forest ecosystem in Shiyang River basin has the pattern character of two areas and three centers. The high-value districts are mainly distributed in the Qilian Mountains, which is in the upstream of the Shiyang River basin. The low-value districts are mainly from the piedmont to the north of the desert areas. This distributing pattern of forest ecosystem has vertical zonality, which is akin to the pattern of vegetation landscape. The three high value centers of service valuation are around the upstream valley of Xida River, Xiying River and Jinta River, and they also contain the region around these rivers at an elevation of 2 000 to 3 000 meters. The distribution feature is related closely to the law that water-heat distribution varies according to elevation above sea level. Considering the service of forest ecosystem, the Qilian Mountains region plays a very important role in Shiyang River basin. This quantification and visualization result is very important to further study of ecological process and ecological effect. Also, this result is of great theoretical value and big realistic significance to direct ecological restoration and ecological rebuilding
中文关键词	森林生态效益 ; 分布格局 ; 石羊河流域
英文关键词	GIS forest ecological benefit distributing pattern GIS Shiyang River basin
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:4145104
来源机构	西北师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226438
作者单位	西北师范大学地理与环境科学学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	赵军,陈姗. 基于GIS的石羊河流域森林生态效益估算与空间分布特征研究[J]. 西北师范大学,2011,34(1):12-19.
APA	赵军,&陈姗.(2011).基于GIS的石羊河流域森林生态效益估算与空间分布特征研究.干旱区地理,34(1),12-19.
MLA	赵军,et al."基于GIS的石羊河流域森林生态效益估算与空间分布特征研究".干旱区地理 34.1(2011):12-19.