气候变化领域集成服务门户(CCPortal): Retreating Glacier and Advancing Forest Over the Past 200 Years in the Central Himalayas

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DOI	10.1029/2020JG005751
	Retreating Glacier and Advancing Forest Over the Past 200 Years in the Central Himalayas
	Sigdel, Shalik Ram; Zhang, Hui; Zhu, Haifeng; Muhammad, Sher; Liang, Eryuan
通讯作者	Zhu, HF (通讯作者)
发表日期	2020
ISSN	2169-8953
EISSN	2169-8961
卷号	125 期号:9
英文摘要	The Himalayan glaciers, as unique reservoirs of freshwater for densely populated Asian countries, have been receiving considerable attention in public and scientific research. However, little is known about their long-term fluctuations as related to climate variability. Herein, we reconstructed glacier fluctuation events by tree ring-based moraine dating and repeated photographs. We assessed these fluctuations over the past 200 years in the Gangapurna and Annapurna III glaciers, located in the central Himalayas. We detected five major glacier fluctuation events in the 1790s, 1920s, 1930s, 1960s, and 1970s. A higher rate of glacier recession was observed from the 1980s onward, coinciding with climate warming. As shown by repeated photographs, the retreating rate of the Gangapurna glacier from 1979 to 2016 (up to 24.4 m yr(-1)) is much higher than the Annapurna III glacier (7.54 m yr(-1)) from 1950 to 2016. Their different frontal retreat rates were likely related to microtopography and glacier sizes. Older moraines developed during and after the Little Ice Age (LIA) were already covered by dense forest, presenting the evidence for retreating glaciers and advancing forests in the central Himalayas. Ongoing warming tends to speed up such ecological processes by resetting biophysical environment of the deglaciated forefields. In general, glaciers have shown retreating trends over the last 200 years, presenting a risk for preserving water resources in the Himalayas and nearby regions. Alternatively, advancing forest tends to amplify warming rate by reducing albedo, which is a new issue for investigating ecohydrological feedbacks between mountain forests, climate, and water resources.
关键词	DEBRIS-COVERED GLACIERS TREE-RING EVIDENCE ICE-AGE SUPRAGLACIAL LAKES LATEST PLEISTOCENE WESTERN HIMALAYA 20-1ST CENTURY NEPAL HIMALAYA CLIMATE-CHANGE MASS-LOSS
英文关键词	tree ring; moraine; glacier fluctuation; Little Ice Age; forest expansion; Himalayas
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS记录号	WOS:000576409700009
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259825
推荐引用方式 GB/T 7714	Sigdel, Shalik Ram,Zhang, Hui,Zhu, Haifeng,et al. Retreating Glacier and Advancing Forest Over the Past 200 Years in the Central Himalayas[J]. 中国科学院青藏高原研究所,2020,125(9).
APA	Sigdel, Shalik Ram,Zhang, Hui,Zhu, Haifeng,Muhammad, Sher,&Liang, Eryuan.(2020).Retreating Glacier and Advancing Forest Over the Past 200 Years in the Central Himalayas.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,125(9).
MLA	Sigdel, Shalik Ram,et al."Retreating Glacier and Advancing Forest Over the Past 200 Years in the Central Himalayas".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 125.9(2020).