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塔里木河流域生态脆弱性评价研究
引用本文:王让会,樊自立.塔里木河流域生态脆弱性评价研究[J].干旱环境监测,1998,12(4):218-223.
作者姓名:王让会  樊自立
作者单位:中国科学院新疆分院生态与地理研究所!乌鲁木齐,830011,中国科学院新疆分院生态与地理研究所!乌鲁木齐,830011
摘    要:塔里木河流域受自然及人为因素的影响,局部地区生态退化问题突出,从景观生态学的干扰性质理论和恢复生态学的观点出发,选择水资源系统、土地资源系统及植被资源系统及其10个综合性敏感因子对流域生态的敏感性及恢复力进行分析,并确定敏感因子的定量指标,定性代码及其权重和阈值,通过算术对数插值对敏感因子实际值进行规范化处理,并构建生态胁迫度。结果表明,塔里木河三源流阿克苏河流域、叶尔羌河流域、和田河流域及于流区的上、中、下游区生态胁迫度分别为0.13、0.25、0.30、0.31、0.57及0.84,在评价分级标准的限定下,其对应的生态脆弱性程度依次为轻微脆弱、一般脆弱、一般脆弱、一般脆弱、中等脆弱及严重脆弱。

关 键 词:塔里木河流域  生态脆弱性  敏感因子  评价体系  胁迫度

STUDY ON ECOLOGICAL VULNERABILITY ASSESSMENT IN TARIM RIVER BASIN
Wang Raghui,Fan Zili.STUDY ON ECOLOGICAL VULNERABILITY ASSESSMENT IN TARIM RIVER BASIN[J].Arid Environmental Monitoring,1998,12(4):218-223.
Authors:Wang Raghui  Fan Zili
Abstract:Affected by natural and artificial factors, ecological environment degradation is very serious in some areas of Tarim RoverBasin Based on the interference features and the theory of landscape ecology and the priciples of restoration ecology, waterresource system, land resource system and vegetation resource system as well as their ten complex susceptible factors arechosen to analyze the susceptibility and renewable potentialies. Meanwhile, quantitative indexes, qualitative codes, weight(Ci) and threshold values (Ti) are decided. The actual values of the ten susceptible factors (ai) are standardized. Furthermore, ecological stree degree model (DS) is built. As a result, the stress degrees of the three source-stream, the AksuRiver Basin, Yarkant River Basin and Hotan River Basin are 0. 13, O. 25 and O. 3O respechvely, meanwhile, the stress de-grees of the three sections of the main-stream, up-stream, nid-stream and down-strem are 0. 31, O. 57 and O. 84 re-spectively. Under the Stardard of the ecological vulherability classification, the ecological vulnerability degrees of the six ar-eas belong to slight vulnerability, general vulnerability, general vulnerabliity, general vulnerability, mid-vulinerability andsevere vulnerability respectively in turn.
Keywords:Tarim River Basin  Ecological vulnerability  Susceptible factor  Assessment system  Stress degree
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