NDLI: Aeolian input of phosphorus to a remote lake induced increase of primary production at the Tibetan Plateau

Content Provider	Royal Society of Chemistry (RSC)
Author	Lei, Pei Zhang, Hong Ao, Liang Shan, Baoqing Tang, Wenzhong
Copyright Year	2016
Abstract	A complete record derived from a core dated by both 210Pb and 137Cs chronologies from Lake Ngoring at the key headwater areas of the Yellow River provides new insight into the increase of primary production induced by aeolian input of phosphorus. This study showed that there was an inflection in the early 1960s, before which total phosphorus (TP), calcium-bound P (Ca-P), and exchangeable P (Ex-P) remained relatively steady or slowly increased (averages 403, 90, and 38 mg kg−1, respectively). However, continued increases of TP, Ca-P, and Ex-P were found thereafter, reaching 460, 110, and 45 mg kg−1, respectively. This distribution pattern was attributed to the increasing anthropogenic input of aeolian phosphorus, probably due to land cover changes, and to sustained urbanization/industrialization and agricultural intensification in neighboring areas. Accordingly, with the increase of limiting nutrient (P), sedimentary organic carbon increased from 7.1 g kg−1 (1960) to 12.0 g kg−1 (2000), nearly a factor of 2, which revealed explicitly that the primary production of Lake Ngoring was enhanced greatly by aeolian P input increase and resulted in the accelerated evolvement process of this remote alpine lake.
Starting Page	96853
Ending Page	96860
Page Count	8
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	99
Journal	RSC Advances
DOI	10.1039/c6ra19516d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Carbon cycle Alpine lake Lake Ngoring River source Phosphorus Increment borer Caesium-137 Yellow River
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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