南京林业大学学报(自然科学版) ›› 2017, Vol. 41 ›› Issue (05): 85-91.doi: 10.3969/j.issn.1000-2006.201609005
汪亮亮,叶茂,高生峰,苟晓霞,徐俏,张同刚
出版日期:
2017-10-18
发布日期:
2017-10-18
基金资助:
WANG Liangliang, YE Mao*, GAO Shengfeng, GOU Xiaoxia, XU Qiao, ZHANG Tonggang
Online:
2017-10-18
Published:
2017-10-18
摘要: 【目的】探索塔里木河流域树木年轮与植被遥感间的关系。【方法】借助树木年轮学的方法和技术手段,利用塔里木河下游10个采样点的胡杨样芯数据和长时间序列中国植被指数(GIMMS NDVI)数据及水热因子数据,在分析该区胡杨年轮指数和植被指数变化特征基础上,重点探讨水热因子、胡杨年轮指数及归一化植被指数(NDVI)三者间的相关性。【结果】胡杨年轮指数和年际NDVI变化在1980—2001年间均呈下降趋势,区内植被在该时间段内退化较为严重。年内NDVI变化呈单峰状,5—8月为植被生长季,1—4月和9—12月为植被非生长季。【结论】该区胡杨年轮生长受5月(P<0.01, 显著负相关)地下水埋深和6月(P<0.01,显著负相关)温度影响显著,而NDVI主要与5—7月(P<0.01, 显著负相关)和10月(P<0.01, 显著负相关)的地下水埋深及7月(P<0.01, 显著负相关)温度有关,且影响NDVI和胡杨年轮指数的主要因子是水热因子中的地下水埋深因子。胡杨年轮指数与NDVI间的相关性差,未能通过0.05水平检验。
中图分类号:
汪亮亮,叶茂,高生峰,等. 水热因子对塔里木河下游胡杨年轮指数和植被指数的影响[J]. 南京林业大学学报(自然科学版), 2017, 41(05): 85-91.
WANG Liangliang, YE Mao, GAO Shengfeng, GOU Xiaoxia, XU Qiao, ZHANG Tonggang. Effects of hydrothermal factors on vegetation index and tree-ring index of Populus euphratica in the lower reaches of the Tarim River [J].Journal of Nanjing Forestry University (Natural Science Edition), 2017, 41(05): 85-91.DOI: 10.3969/j.issn.1000-2006.201609005.
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