Records of natural fire and climate history during the last three glacial-interglacial cycles around the South China Sea

Luo, Yunli; Chen, Huaicheng; Wu, Guoxuan; Sun, Xiaomin

doi:10.1007/bf02907081

Cited by 31 publications

(19 citation statements)

References 19 publications

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“…Levels of biomass burning were very high during the late Holocene, when the climate became drier and historical land use became more intensive (Huang et al, 2006). The charcoal and pollen records from the two deep sea cores 17 940 (taken by Sino-German joint cruise "SONNE-95" in 1994) (Sun et al, 2000) and 1144 (taken by ODP Leg 184 in 1999) (Luo et al, 2001) in the northern part of the South China Sea disclose that the high strength and frequency of natural fire corresponded to the drier climate during glacials or stadials. This relationship between climate and fire in the monsoon region of China is different from that at a global scale (Power et al, 2008;Daniau et al, 2010;Mooney et al, 2011), which may reveal that regional differences in climatic conditions determine vegetation type, fuel biomass, and fire weather.…”

Section: Climate Forcing On Fire Occurrencesmentioning

confidence: 96%

“…Most studies on fire history are concentrated in northern China (Li et al, 2005;Huang et al, 2006;Jiang et al, 2008;Han et al, 2012;Li et al, 2013;Wang et al, 2013;Z. Q. Zhang et al, 2015), while studies in southern China are relatively few (Sun et al, 2000;Luo et al, 2001;Gu et al, 2008;Xiao et al, 2013;. In southwestern China, to the best of our knowledge, only Gu et al (2008) reconstructed fire history for the past 2.0 kyr using microcharcoal and E. L. reconstructed fire history for the past 18.5 kyr using black carbon.…”

Section: Introductionmentioning

confidence: 99%

“…In southwestern China, to the best of our knowledge, only Gu et al (2008) reconstructed fire history for the past 2.0 kyr using microcharcoal and E. L. reconstructed fire history for the past 18.5 kyr using black carbon. These studies on fire history in China have mostly concentrated on the relationship between fire activity and climatic change on orbital to suborbital timescales (Sun et al, 2000;Luo et al, 2001;Li et al, 2005;Huang et al, 2006;Jiang et al, 2008;Z. Q. Zhang et al, 2015; E. L. .…”

Section: Introductionmentioning

confidence: 99%

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Postglacial fire history and interactions with vegetation and climate in southwestern Yunnan Province of China

et al. 2017

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Abstract.A high-resolution, continuous 18.5 kyr (1 kyr = 1000 cal yr BP) macroscopic charcoal record from Qinghai Lake in southwestern Yunnan Province, China, reveals postglacial fire frequency and variability history. The results show that three periods with high-frequency and high-severity fires occurred during the periods 18.5-15.0, 13.0-11.5, and 4.3-0.8 ka, respectively. This record was compared with major pollen taxa and pollen diversity indices from the same core, and tentatively related to the regional climate proxy records with the aim to separate climate-from human-induced fire activity, and discuss vegetation-fire-climate interactions. The results suggest that fire was mainly controlled by climate before 4.3 ka and by the combined actions of climate and humans after 4.3 ka. Before 4.3 ka, high fire activity corresponded to cold and dry climatic conditions, while warm and humid climatic conditions brought infrequent and weak fires. Fire was an important disturbance factor and played an important role in forest dynamics around the study area. Vegetation responses to fire after 4.3 ka are not consistent with those before 4.3 ka, suggesting that human influence on vegetation and fire regimes may have become more prevalent after 4.3 ka. The comparisons between fire activity and vegetation reveal that evergreen oaks are flammable plants and fire-tolerant taxa. Alnus is a fire-adapted taxon and a nonflammable plant, but density of Alnus forest is a key factor to decide its fire resistance. The forests dominated by Lithocarpus/Castanopsis and/or tropical trees and shrubs are not easy to ignite, but Lithocarpus/Castanopsis and tropical trees and shrubs are fire-sensitive taxa. Fire appears to be unfavourable to plant diversity in the study area.

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Section: Climate Forcing On Fire Occurrencesmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Postglacial fire history and interactions with vegetation and climate in southwestern Yunnan Province of China

et al. 2017

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“…For example, the variation of herb/ Pinus was small before MIS 5 in ODP 1144 [6] , but the alkane index of herb/tree in our work varied greatly. And there are timing differences in alkane index and pollen record (including charcoal), so much as no corresponding [6,18,[23][24][25][26][27] . There are two possibilities for such discrepancies.…”

Section: N-alkane Indexes and Source Region Vegetation And Climatementioning

confidence: 99%

Sea surface temperature and terrestrial biomarker records of the last 260 ka of core MD05-2904 from the northern South China Sea

Zhao

et al. 2008

Sci. Bull.

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This paper reports high-resolution biomarker records of the last 260 ka for core MD05-2904 from the northern South China Sea (SCS). The sea surface temperature (SST) record using the U k' 37 index reveals a minimum of 21.5℃ (MIS 2) and a maximum of 28.3℃ (MIS 5.5), for a temperature difference of almost 7℃, and provides the longest high-resolution U k' 37 SST record in northern SCS. The content of odd-number long chain n-alkanes and several n-alkanes indexes such as the CPI, ACL and the C 31 /C 27 ratio, all reveal generally higher values during the glacials and lower values during the interglacials. Terrestrial input as indicated by n-alkane content was mostly controlled by sea-level changes: During the glacials, lower sea-level exposed the continental shelf to enable rivers to transport more terrestrial materials to the slope; and the situation reverses during the interglacials. The n-alkane indexes changes reveal more n-alkanes from contemporary vegetation during glacials as a result of the proximity of the core site to the source region, while the increases in ACL and C 31 /C 27 ratio during glacials indicate a change to more grassy vegetation. However, the highest values for CPI, ACL and the C 31 /C 27 ratio all occurred during late MIS 3, and it was suggested that this period was characterized by a strong summer monsoon-dominated humid climate which resulted in a denser vegetation for the exposed continental shelf region.

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“…According to the studies of pollen [44] and charcoal [45] records from the northern South China Sea, the climate was relatively cold and dry, and the emerging continental shelf was mainly covered by grass vegetation in glacial stages. Grain-size distribution of carbonate-free fraction of sediments form Core ODP1144 exhibits significant variation between glacial and interglacial changes, suggesting a higher proportion of coarse particles in glacial stages [28] .…”

Section: Source Of Terrigenous Materials and Dynamic Controlmentioning

confidence: 99%

Dynamic control on grain-size distribution of terrigenous sediments in the western South China Sea: Implication for East Asian monsoon evolution

Guo-cheng

Zheng

et al. 2008

Sci. Bull.

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High-resolution oxygen isotope stratigraphy of Core MD05-2901, which is located off eastern Vietnam in the western South China Sea (SCS), was established and indicated that the core spans a time period of the past 450 ka. Based on the bulk density, fractional porosity and lithogenic content of the sediments, terrigenous mass accumulation rate (TMAR) was obtained, which is 4.9 6.0 g cm 2 ka 1 on average during interglacial stages, higher than that during glacial stages, i.e. 1.9 5.0 g cm 2 ka 1 , which is different from northern and southern SCS which show higher TMAR in glacial stages. By principle component analysis of grain size distribution of all the samples, two main control factors (F1 and F2) were obtained, which are responsible for about 80% variance of granularity. The contents of grain size population 1.26 2.66 Pm% and 10.8 14.3 Pm% which are sensible to F1 show high-frequency fluctuation, and correlate well with the summer insolation at 15 N. They exhibit a distinct cyclicity with frequencies near 23 ka and 13 ka, in contrast to a strong frequency peak near 100 ka obtained in proxies 4.24 7.42 Pm% and 30.1 43.7 Pm% controlled mainly by F2. The sedimentary character of this part of the SCS was controlled by variations of input flux from two main source areas, namely the southwest and north SCS, which were transported by different circulations of surface current forced by East Asian summer monsoon and winter monsoon respectively. We believe that the East Asian summer monsoon has fluctuated with high frequency and been forced by changes in solar insolation in low latitude associated with precession and half precession, while ice-volume forcing is probably a primary factor in determining the strength and timing of the East Asian winter monsoon but with less important insolation forcing.South China Sea, late Quaternary, terrigenous sediments, grain size, East Asian monsoon As the significant component of the global climate, the finer details of East Asian monsoon are now coming to light through investigation of records from land and sea. The South China Sea, the largest marginal sea in the western Pacific, gives us the ideal materials to trace East Asian monsoon evolution, because it received abundant terrigenous products of chemical weathering and physical erosion in adjacent continents [1] . Through the research on the deep sea sediments, especially the sediment cores collected in ODP 184 cruise, abundant information about the tectonic history of the South China Sea and East Asian monsoon evolution during the Cenozoic has become known [1 4] . More and more paleo-oceanographic information such as changes of thermocline depth, sea water temperature and paleoproductivity, has been discovered mainly by studies on biogenic materials [5 9] .The South China Sea, a semi-closed basin with the

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Records of natural fire and climate history during the last three glacial-interglacial cycles around the South China Sea

Cited by 31 publications

References 19 publications

Postglacial fire history and interactions with vegetation and climate in southwestern Yunnan Province of China

Postglacial fire history and interactions with vegetation and climate in southwestern Yunnan Province of China

Sea surface temperature and terrestrial biomarker records of the last 260 ka of core MD05-2904 from the northern South China Sea

Dynamic control on grain-size distribution of terrigenous sediments in the western South China Sea: Implication for East Asian monsoon evolution

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