生态环境学报
生態環境學報
생태배경학보
ECOLOGY AND ENVIRONMENT
2010年
3期
637-645
,共9页
塔里木河下游%胡杨%树木年轮%区域水环境变化
塔裏木河下遊%鬍楊%樹木年輪%區域水環境變化
탑리목하하유%호양%수목년륜%구역수배경변화
the lower reaches of Tarim River%Populus euphratica Oliv%tree ring%change of regionnl water environment
通过胡杨(Populus euphratica Oliv.)树木年轮宽度的分析,建立了塔里木河下游大西海子(A)、阿克墩(B)、亚合甫马汗(C)、英苏(D)、阿布达勒(E)、喀尔达依(F)、吐格买莱(G)、阿拉干(H)、依干不及麻(I)和考干(J)10个采样区过去54 a来的STD、RES和ARS年表,并借助RES年表,采用年代际变化分析和突变检验,反演了塔罩木河下游54 a年来区域水环境状况变迁时空格局.结果表明:①下游10个样区54 a来区域水环境状况具有多样性和复杂性,并不完全表现为距离下游上段(大西海子水库)越近其水环境状况就越好,区域水环境状况总体变异程度南低到高排序为A、G、C、H、E、D、I、B、F、J,也反映了下游10个样区生态退化程度的差异;②下游54 a来区域水环境状况最好时期出现在20世纪60年代和21世纪初,大部分区域最差时期主要集中在20世纪90年代,是下游地区长达30 a断流水环境变干累积效应的体现;③下游10个样区区域水环境变化具有明显的突变时间,突变出现时间相对水文事件年代具有滞后性.胡杨年轮记录的塔里木河下游54 a来区域水环境时空变迁格局对下游生态退化的历史认识具有重要意义.
通過鬍楊(Populus euphratica Oliv.)樹木年輪寬度的分析,建立瞭塔裏木河下遊大西海子(A)、阿剋墩(B)、亞閤甫馬汗(C)、英囌(D)、阿佈達勒(E)、喀爾達依(F)、吐格買萊(G)、阿拉榦(H)、依榦不及痳(I)和攷榦(J)10箇採樣區過去54 a來的STD、RES和ARS年錶,併藉助RES年錶,採用年代際變化分析和突變檢驗,反縯瞭塔罩木河下遊54 a年來區域水環境狀況變遷時空格跼.結果錶明:①下遊10箇樣區54 a來區域水環境狀況具有多樣性和複雜性,併不完全錶現為距離下遊上段(大西海子水庫)越近其水環境狀況就越好,區域水環境狀況總體變異程度南低到高排序為A、G、C、H、E、D、I、B、F、J,也反映瞭下遊10箇樣區生態退化程度的差異;②下遊54 a來區域水環境狀況最好時期齣現在20世紀60年代和21世紀初,大部分區域最差時期主要集中在20世紀90年代,是下遊地區長達30 a斷流水環境變榦纍積效應的體現;③下遊10箇樣區區域水環境變化具有明顯的突變時間,突變齣現時間相對水文事件年代具有滯後性.鬍楊年輪記錄的塔裏木河下遊54 a來區域水環境時空變遷格跼對下遊生態退化的歷史認識具有重要意義.
통과호양(Populus euphratica Oliv.)수목년륜관도적분석,건립료탑리목하하유대서해자(A)、아극돈(B)、아합보마한(C)、영소(D)、아포체륵(E)、객이체의(F)、토격매래(G)、아랍간(H)、의간불급마(I)화고간(J)10개채양구과거54 a래적STD、RES화ARS년표,병차조RES년표,채용년대제변화분석화돌변검험,반연료탑조목하하유54 a년래구역수배경상황변천시공격국.결과표명:①하유10개양구54 a래구역수배경상황구유다양성화복잡성,병불완전표현위거리하유상단(대서해자수고)월근기수배경상황취월호,구역수배경상황총체변이정도남저도고배서위A、G、C、H、E、D、I、B、F、J,야반영료하유10개양구생태퇴화정도적차이;②하유54 a래구역수배경상황최호시기출현재20세기60년대화21세기초,대부분구역최차시기주요집중재20세기90년대,시하유지구장체30 a단류수배경변간루적효응적체현;③하유10개양구구역수배경변화구유명현적돌변시간,돌변출현시간상대수문사건년대구유체후성.호양년륜기록적탑리목하하유54 a래구역수배경시공변천격국대하유생태퇴화적역사인식구유중요의의.
The characteristics of tree-ring width index sequence (RES chronologies) of Populus euphratica in the lower reaches of Tarim River were studied through the interannnal change analysis and the abrupt change examination. The ten sampling sites in-eluded Daxihaizi(A), Akedun(B), Yahepumahan(C), Yengisu(D), Abdale(E), Kardayi(F), Tugemailai(G), Argan(H), Yiganbujima(I) and Kaogan(J). The research reappeared the change pattern of regional water environment of the lower reaches of Tarim River in the past 54 years. The results indicated: ①The regional water environmental change of the ten sampling sites was various and compli-cated in the river downstream. The water environmental condition did not display completely that the nearer to the upper reaches (Daxihaizi reservoir) the site was, the better its water environmental condition was. The ascending series of the water environmental variation was A, G, C, H, E, D, I, B, F, J and reflected degree of ecology degeneration of the downstream ten sampling areas were different;② the best periods of water environmental conditions appeared in the 1960s and at the beginning of this century, and that the worst periods occurred mainly in the 1990s. This phenomenon was attributed to the breaking flow of river downstream for more than 30 years;③the abrupt change examination indicated that the water environmental change of the downstream ten sampling areas had the obvious sudden change effect. The emergence time of every abrupt change point was later than corresponding hydrology event. Recognizing the tree-ring width index change is important to understand the history of ecology degeneration in the lower reaches of Tarim River.
