Climate change and human impact on the Song Hong (Red River) Delta, Vietnam, during the Holocene

Li, Zhen; Saito, Yoshiki; Matsumoto, Eiji; Wang, Yongji; Tanabe, Susumu; Vu, Quang Lan

doi:10.1016/j.quaint.2005.05.008

Cited by 87 publications

(55 citation statements)

References 55 publications

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“…However, our data do not show a clear correlation between the amount of charcoal present and the abundance of Gramineae pollen larger than 40 m, which is considered to be an indicator of human cultivation ( Fig. 2) (24). According to historic records, in stable societies rulers generally strongly encouraged people to farm and exploit the land for agriculture by decreasing (or abolishing) taxes, and soldiers returned home for agriculture in the seasons when warfare did not normally occur.…”

Section: (See Materials and Methods)contrasting

confidence: 59%

“…1). In previous studies, we reconstructed the palaeoclimate and depositional environments from these 2 cores (24,25). Depositional environments in core sections we analyzed were submarine delta from delta front platform to prodelta on the basis of results from sediment facies analysis including molluscan fossils (25) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…All of the charcoals in the submarine delta were transported by river from the Song Hong (Red River) drainage area and surroundings together with sediment materials, not in situ. Our age model was based on 14 AMS (accelerator mass spectrometry) 14 C dates from core VN, and 13 14 C dates from core GA, and was calibrated using CALIB5.01 (24)(25)(26) …”

Section: Resultsmentioning

confidence: 99%

“…The occurrence of high content of Gramineae pollen of Ͼ40 m provides additional evidence for the intensified rice agriculture in the Song Hong delta area after Ϸ1050 BC ( Fig. 2) (24).…”

Section: (See Materials and Methods)mentioning

confidence: 91%

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Warfare rather than agriculture as a critical influence on fires in the late Holocene, inferred from northern Vietnam

Saito

Dang

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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Fire has played an essential role in the development of human civilization. Most previous research suggests that frequent-fire regimes in the late Holocene were associated with intensification of human activities, especially agriculture development. Here, we analyze fire regimes recorded in the Song Hong delta area of Vietnam over the past 5,000 years. In the prehistoric period, 2 long-term, low-charcoal abundance periods have been linked to periods of low humidity and cool climate, and 5 short-term fire regimes of 100 -150 years in duration occurred at regular intervals of Ϸ700 years. However, over the last 1,500 years, the number, frequency, and intensity of fire regimes clearly increased. Six intensified-fire regime periods in northern Vietnam during this time coincided with changes of Vietnamese dynasties and associated warfare and unrest. In contrast, agricultural development supported by rulers of stable societies at this time does not show a positive correlation with intensified-fire regime periods. Thus, warfare rather than agriculture appears to have been a critical factor contributing to fire regimes in northern Vietnam during the late Holocene.fire regime ͉ Song Hong (Red River) ͉ charcoal ͉ human activities

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Section: (See Materials and Methods)contrasting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…The occurrence of high content of Gramineae pollen of Ͼ40 m provides additional evidence for the intensified rice agriculture in the Song Hong delta area after Ϸ1050 BC ( Fig. 2) (24).…”

Section: (See Materials and Methods)mentioning

confidence: 91%

See 2 more Smart Citations

Warfare rather than agriculture as a critical influence on fires in the late Holocene, inferred from northern Vietnam

Saito

Dang

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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“…Soils are generally thin, poor in most minerals and nutrients, and derived directly from the underlying limestone. Modern precipitation levels in the northern sub-tropics, close to the Song Hong River delta of Vietnam, are concentrated (c. 80%) during the southwest monsoon between May and October, where receipt of rainfall ranges from 1300-1800 mm (Li et al 2006b). The colder and drier northeast monsoon between November and April brings much lower levels of annual rainfall: 200-250 mm (Do Cong Thung 2014).…”

mentioning

confidence: 99%

Tropical limestone forest resilience and late Pleistocene foraging during MIS-2 in the Tràng An massif, Vietnam

Rabett

Ludgate

Stimpson

et al. 2017

Quaternary International

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Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

Zong

Huang

et al. 2010

Earth Surf Processes Landf

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This study examines the sedimentary evidence of human activities during the last 4000 years in the Pearl River deltaic area. The analyses are focused on indentifying agricultural signatures present in the sedimentary record and establishing the timing of a change from a simple, rice-based agriculture to a more advanced, diverse agriculture. The examination is based on modern sediment and plant samples and a sediment core collected from the deltaic area. The analyses include particle size and diatom analysis to determine the environmental conditions that were associated with the period of human activities. Organic carbon isotope ratios and major metal elements reveal an expansion in commercial crop production and metal smelting in the Pearl River delta area about 2000 years ago. The input of organic matter from introduced sugarcane, a C4 plant, elevates the bulk organic carbon isotope values in the estuarine sediments above that represented by other common agricultural crops in the study area, including rice, banana and lotus, which are all C3 plants. The increase in bulk organic isotopic value coincides with the rise in the concentration of copper, iron and lead in the sedimentary sequence, suggesting a wider use of metal tools. These results indicate that advanced agriculture started about 2000 years ago as an expansion in human population took place in the area. This record also provides sedimentary evidence that help ascertain the timing and type of human activities that are linked to subsequent land reclamation on the deltaic plain, resulting in rapid shoreline advancement in the last 2000 years.

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Climate change and human impact on the Song Hong (Red River) Delta, Vietnam, during the Holocene

Cited by 87 publications

References 55 publications

Warfare rather than agriculture as a critical influence on fires in the late Holocene, inferred from northern Vietnam

Warfare rather than agriculture as a critical influence on fires in the late Holocene, inferred from northern Vietnam

Tropical limestone forest resilience and late Pleistocene foraging during MIS-2 in the Tràng An massif, Vietnam

Sedimentary evidence of Late Holocene human activity in the Pearl River delta, China

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