干旱区生态环境知识资源中心(Arid): 1990-2011年沙坡头自然保护区景观变化

Arid

	1990-2011年沙坡头自然保护区景观变化
其他题名	Landscape change in the Shapotou Nature Reserve from 1990 to 2011
	来婷婷; 王乃昂; 高翔; 杨亦宁
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2014
卷号	37 期号:1 页码:115-124
中文摘要	以1990、1996、2002、2007和2011年5期遥感数据为主要数据源,对沙坡头自然保护区景观变化进行分析。结果表明:1990-2011年沙坡头自然保护区景观发生了显著变化,耕地、用材林、水域及建设用地面积增加,草地和沙地面积减小,防护林和荒漠草原面积呈现波动变化。研究区景观类型主要转化特征是沙地和草地转为耕地、用材林和水域,防护林、沙地与荒漠草原间存在相互转化。景观动态度逐年增大,表明人类干扰强度逐年增加。景观格局分析表明,区域主导景观由以沙地为主的自然景观向以用材林为主的经营景观过渡,区域主导景观格局变化对区域总体景观动态产生影响。1990-2007年,区域景观多样性程度逐渐增加,斑块形状不规则化程度增加,分布趋向分散和破碎化的混合排列。2007-2011年,区域景观多样性程度降低,斑块形状规则程度增加,分布趋向集中连片态势。
英文摘要	The landscape change is one of the main driving forces that affect the ecological environment change. And different landscape process depends on the different landscape pattern. The quantitative research of landscape change using the landscape indexes helps in revealing the landscape patches heterogeneity and ecological process. The quantitative research of landscape pattern on the basis of dynamic monitoring on the landscape structure can reveal the characteristics of landscape change and driving force in order to guide the work of landscape planning and environmental protection. With the development of geographical information system and remote sensing technique,more and more new methods based on these new technique are produced,which opens up new avenues for researchers to carry out in-depth study on the field of landscape change. The arid area is a strangely influenced region by human activities and the ecology is sensitive and vulnerable there. The fragility of its nature environment is affected synthetically by physical factor and artificial factor. With the interaction of all the factors,the fragility environment may be changing towards an unfavourable direction for resource utilization by human. Shapotou is located in arid region of northwest China,which has a fragile ecological environment. Since its establishment,the Shapotou Nature Reserve has been developing the ecological construction with the integration between developing production and maintaining ecological balance. While production activities in the Shapotou Nature Reserve positively imapct on ecological environment. Therefore further study on the ecotope topic of this reserve with fragile ecological environment and intense interfere of human beings will be scientifically and practically meaningful. Above all, based on the TM images in 1990,1996,2007 and 2011 and the ETM+ image in 2002, the changes of landscape structure and landscape patterns were analyzed in the Shapotou Natute Reserve. The research on the changing characteristics of landscape structure mainly depends on dynamic degree model and transition matrix. And the study on the landscape pat- tern character changes of the Shapotou Natute Reserve relied on landscape index,which is supported by GIS and landscape analysis software FRAGSTATES. Based on the reference landscape classification results at home and abroad,combined with landscape characteristic of the research area,the landscapes were classified. The results show that landscape changed significantly from 1990 to 2011. The area of farmland, timber forest, waters and construction land increased and that of grassland and desert decreased. Meanwhile the area of shelter forest and desert grassland fluctuated. The major patterns of landscape change were the conversions from desert and grassland to farmland, timber forest and water body. And there is three reciprocal transformation among shelter forest,desert and desert grassland. The dynamic degree of landscape increasing year by year indicates that the intensity of human disturbance increased. The analysis of landscape index showed that landscape diversity index, patch irregular degree and patch dispersion increased from 1990 to 2007. While, after 2007,there is a transformation of regional dominant landscape from desert to timber tree. And landscape diversity index, patch irregular degree and patch dispersion decreased.
中文关键词	景观结构 ; 景观格局 ; 沙坡头自然保护区
英文关键词	landscape structure landscape pattern the Shapotou Nature Reserve
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:5067507
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231096
作者单位	兰州大学资源环境学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	来婷婷,王乃昂,高翔,等. 1990-2011年沙坡头自然保护区景观变化[J]. 兰州大学,2014,37(1):115-124.
APA	来婷婷,王乃昂,高翔,&杨亦宁.(2014).1990-2011年沙坡头自然保护区景观变化.干旱区地理,37(1),115-124.
MLA	来婷婷,et al."1990-2011年沙坡头自然保护区景观变化".干旱区地理 37.1(2014):115-124.