KMS XINJIANG INSTITUTE OF ECOLOGY AND GEOGRAPHY，CAS
| 基于树木年轮的天山东部中国巴里坤地区与西部塔吉克斯坦山区树木生长状况对气候变化响应对比分析 | |
| Alternative Title | COMPARATIVE ANALYSIS OF TREE GROWTH RESPONSE TO CLIMATE CHANGE BASED ON TREE RINGS IN THE BALIKUN AREA OF THE EASTERN TIANSHAN AND THE WESTERN TIANSHAN MOUNTAINS IN THE TAJIKISTAN |
| SALTANAT SABITOVA | |
| Subtype | 硕士 |
| Thesis Advisor | 于瑞德 |
| 2019-06-30 | |
| Degree Grantor | 中国科学院大学 |
| Place of Conferral | 北京 |
| Degree Discipline | 理学硕士 |
| Keyword | 树木年轮气候学 空间相关 重建 雪岭云杉 土耳其斯坦圆柏 Dendroclimatology spatial correlation reconstruction Picea schrenkiana Juniperus turkestanica |
| Abstract | 森林树木在环境具有重要的生态意义，因此，树木年轮宽度可以在其生长期内对气候因子的响应有清晰的认识。在本研究中，采用树木年代学的方法，我们重建了中国西部（天山东部）和塔吉克斯坦北部（天山西部）的过去气候，并根据西伯利亚冷杉（Abiessibirica Ledeb）、雪岭云杉（Picea shrenkiana） 、 土耳其斯坦圆柏（Juniperus turkestanica）等 3 个不同树种的树木年轮宽度与气候要素的响应情况进行相互比较，找出相似之处和不同之处。来自不同地区的树木生长趋势的比较有助于我们了解气候变化和气候影响。来自西伯利亚冷杉和土耳其斯坦圆柏（Juniperus turkestanica）的树轮宽度对气候变化很敏感。巴里坤地区（DL）树木年轮树芯是在海拔 2,100-2,300 米采集的。平均温度是影响树木生长的最大因素之一，选取 6-9 月的气温，来重建 1840 年至 2017 年期间西伯利亚冷杉（Abiessibirica Ledeb）年表的温度。 塔吉克斯坦天山山地树木（TPA）生长明显受降水的影响，尤其是夏季降水对该地树木生长的影响更加明显，然后我利用海拔为 2900-3000 米的土耳其斯坦圆柏（Juniperus turkestanica）树轮宽度年表来重建了过去 227 年以来的 6-8 月的降水。 利用中国境内的 DL 树轮宽度与温度的相关性达到了-0.82（p <0.01），这可能树木生长的气候影响比较类似，而塔吉克斯坦的树年表（TPA）与 6 月份降水的相关性为 0.404（p<0.01），与 10 月降水的相关性为 -0.272（p <0.01）。对比三个树轮宽度年表发现：中国西部的树木生长对温度的响应可分为高低两个不同时期，其中较高时期为：1860,1910-1920,1960-1980 和 2010 年，而较低生长时期为： 1850-1880， 1930-1950 和1990 年。在重建塔吉克斯坦的降水过程中也可分为高低两个不同时期，其中较高时期为：1860 年， 1960-1980 年和 2000 年，而较低生长时期为： 1870 年、 1910-1940 年。空间相关性显示我们的温度重建与在中亚其他地区（包括哈萨克斯坦，吉尔吉斯斯坦，乌兹别克斯坦，土库曼斯坦，塔吉克斯坦）伊朗，蒙古，沙特阿拉伯和中国这一大区域的温度重建的具有较好一致性。我们的降水重建也与中亚，蒙古，新疆天山山脉和塔吉克斯坦等地区的研究结果有较好的一致性。研究内容使我们能够在全球气候变化报告中更好地了解我们研究领域中持续增加/减少的温度和降水量。这些以及随后在这些地区开展的工作仍在继续，我希望这些领域的研究能够帮助我们更好地了解亚洲全球变暖和过去气候变化的条件变化。 |
| Other Abstract | Forest trees have ecological significance in the environment, therefore trees can give aclear idea effect of the climate parameters in all their period of growth. In our study was useddendrochronological techniques to reconstruct the climate of past from Western China(Eastern Tian Shan Mountains) and Northern Tajikistan (Western Tian Shan Mountains) andcompare each other, to find similarities and differences, based on tree-ring chronologies ofSiberian fir, Picea shrenkiana, and Juniperus turkestanica tree species.Comparison of tree growth trend from different regions helps us to understand climatevariabilities and climatic influences. Rings width from Siberian fir and Juniperus turkestanicawere sensitive to climatic variations. Balikun region (DL) tree ring-width chronologies weredeveloped for the site an elevation of 2,100-2,300 m. above sea level, the mean temperatureis one of the highest influencing factors, June-September period was selected to reconstructthe temperature from Siberian fir (Abies sibirica Ledeb) chronologies for the period from1840 to 2017 years. Tajikistan Tian Shan Mountains tree growth (TPA) implied the greatinfluence of precipitation, optimal growth depends on summer months, I presented areconstruction of June-August precipitation based on tree-ring Juniperus turkestanicachronology width for 227-year, which collected at an altitude of 2900-3000 m above sealevel. China’s ring width of DL place show negative significance correlation at -0.82 (p<0.01)with temperature, which could provide similar climatic influence to trees, while Tajikistan’stree chronology (TPA) have positive significance correlations 0.404 (p<0.01) in Juneprecipitation and negative correlation -0.272 (p<0.01) with precipitation in October.Comparison of the three tree-ring width chronologies， even have negative correlationcoefficients shows high & low growth periods, here are some decades of high growth 1860,1910-1920, 1960-1980 & 2010 years and low growth 1850-1880, 1930-1950 & 1990 years inWestern China. During reconstruction, we considered the decade’s high/low growth 1860,1960-1980 & 2000/1870 & 1910-1940 years in Tajikistan, respectively.Spatial correlations emphasize the consistency of the geographical significance of ourtemperature reconstructions in the big area, Central Asia (Kazakhstan, Kyrgyzstan,Uzbekistan, Turkmenistan, Tajikistan) Iran, Mongolia, Saudi Arabia, and China. Ourprecipitation reconstructions also have similar proxy records and confirm other investigationsin Central Asia, Mongolia, Xinjiang Tian Shan Mountains, and Tajikistan.The research content enables us to better understand the consistentincreasing/decreasing temperature and precipitation in our research areas at the GlobalClimate Change reports. This and subsequent work on these territories continues, and I hopethat research in these areas should help us better understand the change of conditions ofglobal warming and past climate variability in Asia. |
| Subject Area | 自然地理学 |
| Language | 英语 |
| Document Type | 学位论文 |
| Identifier | http://ir.xjlas.org/handle/365004/15302 |
| Collection | 中国科学院新疆生态与地理研究所 研究系统 |
| Affiliation | 中国科学院新疆生态与地理研究所 |
| First Author Affilication | 中国科学院新疆生态与地理研究所 |
| Recommended Citation GB/T 7714 | SALTANAT SABITOVA. 基于树木年轮的天山东部中国巴里坤地区与西部塔吉克斯坦山区树木生长状况对气候变化响应对比分析[D]. 北京. 中国科学院大学,2019. |
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