|Table of Contents|

Comprehensive Assessment for Change of Ecological Environment in Qinghai-Tibet Plateau Based on RS/GIS and AHP-GPCA Model(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2011年第04期
Page:
434-440
Research Field:
地球信息科学
Publishing date:

Info

Title:
Comprehensive Assessment for Change of Ecological Environment in Qinghai-Tibet Plateau Based on RS/GIS and AHP-GPCA Model
Author(s):
ZHANG Ji-cheng; PAN Xin-chun
National Oceanic Consultation Center, State Oceanic Administration, Beijing 100860, China
Keywords:
AHP-GPCA model;  RS;  GIS;  change of ecological environment;  comprehensive assessment;  Qinghai-Tibet Plateau
PACS:
X87;P66
DOI:
-
Abstract:
Based on the comprehensive statistical assessment model with analytical hierarchy process and global principal component analysis(AHP-GPCA model)and RS/GIS, the changes of ecological environment in Qinghai-Tibet Plateau from late 1970s to 2000 were comprehensively assessed, and then the change of ecological environment and its spatial distribution were discussed. The assessment units were county and river basin, the assessment indicators were temperature, precipitation, normalized difference vegetation index(NDVI), glacier density, marsh density, lake ratio, population density and desertification ratio. The results showed that the change of ecological environment in Qinghai-Tibet Plateau was strong from late 1970s to 2000, and the environment of most counties deteriorated; the area of environmental deterioration in serious and middle levels were 31.8% of the total area of Qinghai-Tibet Plateau, and the area in light level were 14.5%, and the area of environment improved was 14.5%; the three principals were desertification ratio, glacier density and NDVI by global principal component analysis, and the accumulative contribution rate of them was more than 70%, so they could stand for the above eight assessment indicators; the river basin with serious environmental deterioration was mainly heartland of Qinghai-Tibet Plateau, Tsaidam Basin and the zone around Qinghai Lake, the most serious was Golmud and the most improved was southeast areas of Tibet; the change of ecological environment showed the multi-level structure from the edge to heartland and the extreme development trend to different directions; the counties with the ecological environment improved mostly distributed in the regions with glacier concentrated, and the local climate, ecological environment, change of water resource in part counties were very complicated under the influence of glacier change from late 1970s to 2000. Finally, the advantages of comprehensive assessment with AHP-GPCA model and RS/GIS were discussed. The method could give consideration on both subjective and objective weights, decrease the duplicate information, and visualize the results.

References:

[1] 黄玲花,韦国燕.PCA与AHP结合法在城市可持续发展评价中的应用[J].统计与决策,2007(8):149-150.
[2] 王农跃,李燕飞.基于主成分分析的上海市综合竞争力实证研究[J].大众科学,2007(22):98-99.
[3] 韩延玲,高志刚.基于组合评价的中国区域可持续发展研究[J].生态经济,2007(7):28-32.
[4] 张淑娜.基于AHP-PCA 模型的于桥水库富营养化分析[J].环境与可持续发展,2007(6):8-10.
[5] 王晓鹏,曾永年,曹广超,等.基于多元统计和AHP的青藏高原牧区可持续发展评价模型与应用[J].系统工程理论与实践,2005,25(6):139-144.
[6] 毛文永.生态环境影响评价[M].北京:中国环境科学出版社,1998.
[7] 廖顺宝,李泽辉.积温数据栅格化方法的实验[J].地理研究,2004,23(5):633-640.
[8] 廖顺宝,李泽辉.气温数据栅格化中的几个具体问题[J].气象科技,2004,32(5):352-356.
[9] 张继承.基于RS/GIS的青藏高原生态环境综合评价研究[D].长春:吉林大学,2008.
[10] 张继承,姜琦刚,李远华,等.基于RS/GIS的西藏地区湖泊变化动态监测及气候背景[J].地球科学与环境学报,2008,30(1):87-93
[11] 申晋利,张军龙.基于面向对象分类方法的查干湖地区生态环境变化遥感分析[J].地球科学与环境学报,2009,31(2):212-215.
[12] 于 欢,张树清,赵 军,等.基于ALOS遥感影像的湿地地表覆被信息提取研究[J].地球科学与环境学报,2010,32(3):324-330.
[13] 卢纹岱.SPSS for Windows统计分析[M].北京:电子工业出版社,2000.
[14] 徐 浪,马 丹.实际应用中主成分的选择及其经济意义[J].科技与管理,2002,4(2): 8-9.
[15] 杨建平,丁永建,陈仁升,等.长江黄河源区生态环境变化综合研究[M].北京:气象出版社,2006.
[16] 李 森,董玉祥,董光荣,等.青藏高原沙漠化问题与可持续发展[M].北京:中国藏学出版社,2001.
[17] 中华人民共和国科学技术部.《气候变化国家评估报告》解读[J].环境保护,2007(11):20-26.
[18] 丁一汇.中国西部环境演变评估第二卷:中国西部环境变化的预测[M].北京:科学出版社,2002.
[19] 吴绍洪,尹云鹤,郑 度,等.青藏高原近30年气候变化趋势[J].地理学报,2005,60(1):3-11.
[20] 王建兵,杨文杰.青藏高原东北部边坡地带气候变化及对牧草生长的影响[J].安徽农业科学,2010,38(26):14535-14537.
[21] 沈华东,于 革.青藏高原兹格塘错流域50年来湖泊水量对气候变化响应的模拟研究[J].地球科学与环境学报,2011,33(3):282-287.

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Last Update: 2011-12-20