摘要
以塔里木河干流荒漠河岸胡杨(Populus euphratica)为研究对象,在塔里木河干流河道上游和中游选择帕满水库和坎白尔吾斯坦2个断面,分析胡杨径向生长的特点。根据不同断面的河道径流数据,采用小波分析和相关性分析方法研究塔里木河胡杨径向生长随径流动态变化的响应。结果表明,帕满水库一新其满断面,胡杨基部断面生长增量(BAI)与径流在15—24年时间尺度上都发生震荡,且径流震荡年份要早于基部断面生长增量震荡年份。坎白尔吾斯坦一英巴扎断面,胡杨BAI与径流在10-20年时间尺度上都发生震荡,BAI震荡周期出现时间较晚。在塔里木河干流沿岸,径流是胡杨径向生长的主要限制因素之一。上游帕满水库断面,胡杨BAI与前一年11月至当年3月的径流量呈显著相关:中游坎白尔吾斯坦断面,胡杨BAI与前一年12月至当年3月的径流量呈显著相关。塔里木河不同河段胡杨BAI对径流变化响应的敏感度存在差异。研究表明,塔里木河上游采样区胡杨生长良好,所对应的最佳径流达1.3340×10^8m^3;塔里木河中游采样区胡杨径向生长的最合理径流量的范围为0.3803×10^8-1.2056×10^8m^3。
Taking the Populus euphratica forest in the main stream of the Tarim River as the research object, the two sections of the Puman reservoir and Kanbaierwusitan were selected to analyze the characteristics of the radial growth of P. euphratica in the middle reaches of the upper reaches of the Tarim River. The runoff data from cross sections were selected and the response of the radial growth of P. euphratica to the dynamic change of runoff was studied by wavelet analysis and correlation analysis. In the Puman reservoir-Xinqiman section, the basal area increment(BAI) for P. euphratica and the runoff scale all oscillated in a 15–24 year time, and the year of the runoff concussion was earlier than the BAI oscillation year. In the Kanbaierwusitan-Yingbazha section, the BAI for P. euphratica and the runoff scale all oscillated in a 10–20 year time, and the year of the runoff concussion was earlier than the BAI oscillation year. In the main stream of the Tarim River, runoff was one of the main factors limiting the radial growth of P. euphratica. The BAI for P. euphratica was significantly correlated with runoff from November of the previous year to March of this year. In the midstream of the Tarim River, The BAI for P. euphratica was significantly correlated with the runoff from December of the previous year to March of this year. The sensitivity of P. euphratica BAI to runoff variation in different sections of Tarim River differed. In the upstream sampling area of the Tarim River, a reasonable runoff reached 1.334 0×10~8 m^3, and P. euphratica grew well. The range of optimal radial flow of P. euphratica growth in the sampling area was 0.380 3×10~8 –1.205 6×10~8 m^3 in the middle reaches of the Tarim River.
作者
苟晓霞
叶茂
汪亮亮
苟晓红
Xiaoxia Gou;Mao Ye;Liangliang Wang;Xiaohong Gou(College of Geography Science and Tourism,Xinjiang Normal University,Urumqi 830054,China;Xinjiang Laboratory of Lake Environment and Resources in Arid Zone,Xinjiang Normal University,Urumqi 830054,China;Xinjiang Agricultural University,Urumqi 830000,China)
出处
《植物学报》
CAS
CSCD
北大核心
2018年第6期801-811,共11页
Chinese Bulletin of Botany
基金
新疆维吾尔自治区研究生科研创新项目(No.XJGRI2017096)
国家自然科学基金(No.41461045)
新疆维吾尔自治区青年科技创新人才培养工程-优秀青年科技创新人才培养项目(No.2013721032)
关键词
最佳径流量
灵敏度
基部断面生长增量
塔里木河上
中游
reasonable runoff
sensitivity
basal area increment
upper and middle reaches of the
Tarim River
