干旱区生态环境知识资源中心(Arid): 榆林沙区景观格局特征与动态分析

Arid

	榆林沙区景观格局特征与动态分析
其他题名	Analysis on the Characteristics of Landscape Structure and Dynamics Changes in Yulin Sand Land
	高国雄 1; 高欣 2; 张彩霞 3
来源期刊	西北林学院学报
ISSN	1001-7461
出版年	2012
卷号	27 期号:1 页码:54-57
中文摘要	在对榆林沙区土地利用结构调查和遥感影像解译资料分析基础上,研究了榆林沙区景观构成和特征,分析了景观格局动态,结果表明:1)景观类型中林草地面积最大,占65.4%,在整体景观中优势突出(0.688),为主要景观类型;农耕地、居民建设用地占24.91%,表明人类活动在区域景观格局发展过程中参与的力度己十分强烈,成为自然景观格局变化最大的外来影响因素。2)榆林沙区景观破碎度很低(0.157),景观类型较单调,分配不均匀,景观多样性较低(1.501),稳定性差。3)近20a间,林地、草地、园地面积在整个景观格局中的比例增加了10.24%,而流沙地、盐碱地等难利用地景观比例下降了14.43%,反映了近年来榆林沙地治理力度和显著成效。但是,当地的城镇、工矿、交通、电力等各类建设用地面积增长了13.56%,在整个景观中的比例增加了0.57%,对区域人工植被乃至全区生态环境的影响也是不容忽视的。
英文摘要	Based on the investigation of land utilization structure and remote sensing image interpretation,the landscape constitution and characteristics of Yulin sandy land were studied,landscape pattern tendency was analyzed.The results indicated: 1) forests and grasslands were the main landscape types,accounting for 65.4%,and landscape dominance was 0.688.The agriculture and resident construction land accounted for 24.91%;it indicateding that the intensity of human activities was very intense in the region of landscape pattern developing process,while becoming the main external factors of the natural landscape pattern changes.2) In Yulin desert region,the landscape fragmentation degree was very low(0.157),the landscape type was monotonous and uniform,the landscape diversity was low(1.501),landscape pattern was unstable.3) In the past 20 years,the areas of woodland,grassland and garden was increased by 10.24% in the entire landscape patterns proportion,while the area of wind-drift sand,saline and unused land dropped by 14.43%,reflecteding governance efforts and significant achievements in the recent years in Yulin sand land.However,the construction land area,such as resident land,industrial,mining,traffic and urban etc.,increased by 13.56%,while increased by 0.57% in the entire landscapes proportion,which was indispensable in the regional artificial vegetation and the entire district ecological environment.
中文关键词	景观格局 ; 景观多样性 ; 景观破碎度 ; 优势度 ; 榆林沙区
英文关键词	landscape structure landscape diversity landscape fragmentation dominance Yulin sandy land
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY ; REMOTE SENSING
WOS研究方向	Forestry ; Remote Sensing
CSCD记录号	CSCD:4433536
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228702
作者单位	1.西北农林科技大学, 农业部黄土高原农业资源与环境修复重点开放实验室, 杨凌, 陕西 712100, 中国; 2.西安科技大学, 西安, 陕西 710000, 中国; 3.中科遥感信息技术有限公司, 天津 300384, 中国
推荐引用方式 GB/T 7714	高国雄,高欣,张彩霞. 榆林沙区景观格局特征与动态分析[J]. 西北农林科技大学,2012,27(1):54-57.
APA	高国雄,高欣,&张彩霞.(2012).榆林沙区景观格局特征与动态分析.西北林学院学报,27(1),54-57.
MLA	高国雄,et al."榆林沙区景观格局特征与动态分析".西北林学院学报 27.1(2012):54-57.