干旱区生态环境知识资源中心(Arid): Assessment of wetland fragmentation in the middle reaches of the Heihe River by the type change tracker model

Arid

	Assessment of wetland fragmentation in the middle reaches of the Heihe River by the type change tracker model
	Zhao Ruifeng; Xie Zuolun; Zhang Lihua; Zhu Wen; Li Jie; Liang Dan
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2015
卷号	7 期号:2 页码:177-188
英文摘要	The quantitative research of wetland landscape fragmentation in the middle reaches of the Heihe River is important for the wetland and oasis sustainable development in the Hexi Corridor. Based on the data of remote sensing and GIS, we constructed the type change tracker model with sliding window technique and spatially morphological rule. The suitable scale and optimum scale of the fragmentation model of wetland landscape in the middle reaches of the Heihe River were determined by the area frequency statistics method, Chi-square distribution normalized scale variance, fractal dimension and diversity index. By integrating type change tracker model and the optimum scale with GIS spatial analysis, the spatial distribution characteristics of wetland landscape fragmentation in different periods and the related spatial-temporal change process were clarified. The results showed that (1) the type change tracker model, which analyzes the spatial pattern of wetland fragmentation on the pixel level, is better than the traditional wetland fragmentation analysis on the landscape and patch levels; (2) The suitable scale for the wetland fragmentation ranged from 150 m150 m to 450 m450 m and the optimum scale was 250 m*250 m in the middle reaches of the Heihe River; and (3) In the past 35 years, the total wetland area decreased by 23.2% and the fragmentation of wetland markedly increased in the middle reaches of the Heihe River. The areas of core wetlands reduced by 12.8% and the areas of perforated, edge and patch wetlands increased by 0.8%, 3.1% and 8.9%, respectively. The process of wetland fragmentation in the research region showed the order of core wetland, perforated or edge wetland, patch wetland or non-wetland. The results of this study would provide a reference for the protection, utilization and restoration of limited wetland resources and for the sustainable development of the regional eco-environment in the Heihe River Basin.
英文关键词	wetland landscape pattern fragmentation the type change tracker model Heihe River
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	History
CSCD记录号	CSCD:5347504
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335442
作者单位	Zhao Ruifeng, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China.; Xie Zuolun, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China.; Zhu Wen, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China.; Li Jie, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China.; Liang Dan, College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China.; Zhang Lihua, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Zhao Ruifeng,Xie Zuolun,Zhang Lihua,et al. Assessment of wetland fragmentation in the middle reaches of the Heihe River by the type change tracker model[J],2015,7(2):177-188.
APA	Zhao Ruifeng,Xie Zuolun,Zhang Lihua,Zhu Wen,Li Jie,&Liang Dan.(2015).Assessment of wetland fragmentation in the middle reaches of the Heihe River by the type change tracker model.Journal of Arid Land,7(2),177-188.
MLA	Zhao Ruifeng,et al."Assessment of wetland fragmentation in the middle reaches of the Heihe River by the type change tracker model".Journal of Arid Land 7.2(2015):177-188.