干旱区生态环境知识资源中心(Arid): 1974~2007年若尔盖县湿地变化研究

Arid

	1974~2007年若尔盖县湿地变化研究
其他题名	Change of Wetlands in Zoige County from 1974 to 2007
	蒋锦刚 1; 李爱农 2; 边金虎 2; 于之锋 3; 雷光斌 2
来源期刊	湿地科学
ISSN	1672-5948
出版年	2012
卷号	10 期号:3 页码:318-326
中文摘要	选取1974~2007年期间的5期多源遥感影像数据作为数据源,在解决多源遥感影像(MSS/TM/ETM+和CBERS影像)和多时相(1月、6~9月)影像数据的遥感分类问题上,以模糊物元理论来解释多数据源和多时相数据之间的关系,设计关联函数概率转化的多源遥感数据分类物元模型,利用该模型得到了若尔盖县湿地区1974~2007年期间的地物类型分布,并进行了变化检测和概率修正算法处理,揭示了1974~2007年若尔盖县湿地变化特征。2007年,若尔盖县各类型湿地的面积占湿地总面积的比例分别为河流和湖泊1.37%、泥炭沼泽4.23%、沼泽化草甸9.91%和湿草甸6.04%.1974~2007年期间,若尔盖县的河流和湖泊、泥炭沼泽、沼泽化草甸和湿草甸的面积在减少,以旱生植物为主的中、低覆盖度草地、居民点、建筑用地和沙地面积在增加。泥炭沼泽主要向沼泽化草甸、湿草甸演替。人为因素则是在较短时间尺度上影响湿地变化的主要驱动力。不确定性问题仍是遥感分类与变化检测存在的主要问题。
英文摘要	The Zoige wetlands is located in eastern edge of Tibet Plateau, which is an important headwater conservation district in the upper reaches of the Yellow River, crossing the conjunction area of Sichuan and Gansu provinces. In recent years, the ecological environment deterioration is increasing, mainly marked by swamp drought, grassland desertification and rat troubles, due to global climate change, long-term over-grazing, canalizing and water discharging and human activities. In this paper, remote sensing images from 4 sensors (MSS, TM, ETM+, and CBERS), and ASTER-GDEM and MODIS-NDVI data were used as data sources to study distribution of the surface objects and change characteristics of Zoige wetlands during 5 periods from 1974 to 2007. In order to solve the problem on classification of multi-source and multi-temporal remote sensed data, the relationship between the multi-sources and multi-temporal data was explains by the fuzzy matter-element theory, and a classification matter-element model based on multi-sources data by correlation function was developed in the paper. Using this method, the surface types of Zoige wetlands were extracted in 1974, 1986, 1994, 2000 and 2007, and the ratio of area of various types of wetlands in total area of Zoige county in the five periods were rivers and lakes 1.37%, peat swamp 4.23%, swampy meadow 9.91%, and wet meadow 6.04% in 2007. After the designed change detection and probability revisal, the results showed that the areas of rivers and lakes, peat swamp, swampy meadow, and wet meadow were gradually shrinking, while the areas of grasslands with low and middle degree of coverage, residential area, building sites and sandy lands were gradually enlarging in Zoige wetlands during 1974-2007. Peat swamp mainly experienced the succession process towards to swampy meadow and wet meadow. Natural factors and human activities were the main influence factors resulting in the constantly degradation of Zoige wetlands. Natural factors controlled the change of the wetlands under the environment background, while human activities were the mainly driving forces resulting in wetland change in the short time scale. The uncertainty is still the main problem in the process of remote sensing image classification and change detection.
中文关键词	泥炭沼泽 ; 若尔盖县 ; 多源遥感数据 ; 分类 ; 物元模型 ; 变化检测
英文关键词	peat swamp Zoige county multi-sources remote sensed data classification matter-element model change detection
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:4690344
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228526
作者单位	1.中国科学院水利部成都山地灾害与环境研究所, 浙江省城市湿地与区域变化研究重点实验室, 成都, 四川 610041, 中国; 2.中国科学院水利部成都山地灾害与环境研究所, 成都, 四川 610041, 中国; 3.杭州师范大学遥感与地球科学研究院, 浙江省城市湿地与区域变化研究重点实验室, 杭州, 浙江 311121, 中国
推荐引用方式 GB/T 7714	蒋锦刚,李爱农,边金虎,等. 1974~2007年若尔盖县湿地变化研究[J],2012,10(3):318-326.
APA	蒋锦刚,李爱农,边金虎,于之锋,&雷光斌.(2012).1974~2007年若尔盖县湿地变化研究.湿地科学,10(3),318-326.
MLA	蒋锦刚,et al."1974~2007年若尔盖县湿地变化研究".湿地科学 10.3(2012):318-326.