“…In contrast, paleofire research in Asia (Huang et al, 2006; Liu et al, 2010; Werf et al, 2008) and Africa (Ivory & Russell, 2016; Roberts & Wooster, 2008; Seydack et al, 2007) is relatively limited, particularly in tropical and subtropical regions. What is encouraging is that in recent years, fire events in the East Asian monsoon region have attracted more and more attention (Ma et al, 2018; Xue et al, 2018).…”
We identified four climatic stages between 6.2 and 1.3 cal kyr before present (BP) based on pollen and charcoal concentrations by high-resolution Accelerated mass spectrometer (AMS) 14 C-dated sediment profile from Taiwan's Toushe Basin. From 6.2 to 4.6 cal kyr BP, the region was warm-wet with infrequent wildfires and dominant subtropical evergreen broad-leaved forests. The climate was cooler-drier from 4.6 to 3.0 cal kyr BP, with a decline in forest and increased fire frequency. From 3.0 to 2.1 cal kyr BP, climate further cooled and dried, with the development of alpine meadows and higher fire frequency. The region became warmer and wetter from 2.1 to 1.3 cal kyr BP, accompanied by forest recovery. Climatic changes were linked to changes in East Asia Summer Monsoon intensity, which is mainly controlled by solar radiation. Wildfires were likely controlled by precipitation variability that is influenced by East Asia Summer Monsoon and El Niño-Southern Oscillation. Toushe Basin experienced drought conditions and frequent wildfires during the El Niño years. Plain Language Summary The purpose of our study is to reveal the relationship between paleoclimate, vegetation, and wildfire. The study area is located in the Toushe Basin, central Taiwan. Through palynological and charcoal analysis, the vegetation, climate, and wildfire history of the past 6,000 to 1,000 years in the study area were reconstructed. The study found that after 4,600 years, the East Asian summer monsoon continued to weaken until approximately 2,000 years ago, during which time the climate was dry and cool, and wildfires were frequent. In addition, it is found that the climate in this region is mainly controlled by the changes in solar radiation. The cycle of climate change coincides with that of solar activity. In El Niño years, the Toushe Basin was dry and frequent wildfires occurred.
“…In contrast, paleofire research in Asia (Huang et al, 2006; Liu et al, 2010; Werf et al, 2008) and Africa (Ivory & Russell, 2016; Roberts & Wooster, 2008; Seydack et al, 2007) is relatively limited, particularly in tropical and subtropical regions. What is encouraging is that in recent years, fire events in the East Asian monsoon region have attracted more and more attention (Ma et al, 2018; Xue et al, 2018).…”
We identified four climatic stages between 6.2 and 1.3 cal kyr before present (BP) based on pollen and charcoal concentrations by high-resolution Accelerated mass spectrometer (AMS) 14 C-dated sediment profile from Taiwan's Toushe Basin. From 6.2 to 4.6 cal kyr BP, the region was warm-wet with infrequent wildfires and dominant subtropical evergreen broad-leaved forests. The climate was cooler-drier from 4.6 to 3.0 cal kyr BP, with a decline in forest and increased fire frequency. From 3.0 to 2.1 cal kyr BP, climate further cooled and dried, with the development of alpine meadows and higher fire frequency. The region became warmer and wetter from 2.1 to 1.3 cal kyr BP, accompanied by forest recovery. Climatic changes were linked to changes in East Asia Summer Monsoon intensity, which is mainly controlled by solar radiation. Wildfires were likely controlled by precipitation variability that is influenced by East Asia Summer Monsoon and El Niño-Southern Oscillation. Toushe Basin experienced drought conditions and frequent wildfires during the El Niño years. Plain Language Summary The purpose of our study is to reveal the relationship between paleoclimate, vegetation, and wildfire. The study area is located in the Toushe Basin, central Taiwan. Through palynological and charcoal analysis, the vegetation, climate, and wildfire history of the past 6,000 to 1,000 years in the study area were reconstructed. The study found that after 4,600 years, the East Asian summer monsoon continued to weaken until approximately 2,000 years ago, during which time the climate was dry and cool, and wildfires were frequent. In addition, it is found that the climate in this region is mainly controlled by the changes in solar radiation. The cycle of climate change coincides with that of solar activity. In El Niño years, the Toushe Basin was dry and frequent wildfires occurred.
“…Over the past several decades, an increasing number of studies concerning climatic effects on biomass burning have been carried out in the East Asian Summer Monsoon (EASM) region. These studies are based on the records from lakes (Wu et al, 2008; Han et al, 2012), loess (Wang et al, 2012; Tan et al, 2015), and peaty sediments (Zhao et al, 2017; Ma et al, 2018). However, remarkably few fire history reconstructions have been developed in the Indian Summer Monsoon (ISM) areas of China (Xiao et al, 2015; Zhang et al, 2015).…”
Section: Introductionmentioning
confidence: 99%
“…There is an outlet on the eastern side of the lake flowing into the Mengsuo River. Figure 1.(color online) (A) Location of Yunnan Province and the study sites mentioned in this study, including Paru Co(Morrill et al, 2006), Lake Muge (Sun et al, 2016), Liangjiacun Loess profile (Tan et al, 2015), Lake Daihai (Han et al, 2012), and Dongge Cave (Dykoski et al, 2005) as well as Lantianyan Bog and Shuizhuyang Bog (Zhao et al, 2017; Ma et al, 2018). (B) Location of Lake Ximenglongtan (XMLT) and the other paleoclimate reconstruction sites (Erhai Lake, Shen et al, 2006; Tiancai Lake, Zhang et al, 2017; Xingyun Lake, Wu et al, 2018) and fire history records (Tengchongqinghai Lake, Xiao et al, 2017a) in the region of the study site.…”
Wildfires are sensitive to climate change, but their response to changes in temperature and precipitation on long timescales is still disputed. In this study, we present a ~9.4 ka black carbon mass sedimentation rate (BCMSR) record from Lake Ximenglongtan (XMLT), southwestern China, to elucidate the Holocene fire regime and its linkages to climatic conditions. The results indicate that the regional fire activity was low during the early Holocene (before 7.6 cal ka BP), increased notably at 7.6 cal ka BP, and continued to increase gradually during the mid- to late Holocene until 2.2 ka. The episodes of higher fire occurrence reflected by higher BCMSR over the last 2.2 ka might be more likely related to the intensified human activities. The cool and humid climate during the early Holocene limited the spread of fire, while warming and drying at ~7.6 cal ka BP triggered higher fire occurrence. Instead of temperature, changes in precipitation dominated fire regime variation during the mid- to late Holocene. On millennial timescales, we suggest that Holocene fire variability has been predominantly controlled by the combined effects of Northern Hemisphere (NH) summer and winter insolation that influenced monsoonal precipitation and fire season temperature, respectively. Indian Ocean Dipole (IOD) events may also have affected fire incidence through influencing monsoon intensity.
“…M. Li et al (2018) focused on the case study in the Upper Minjiang River basin to demonstrate the influence of future climate change on debris flow hazard. Besides, Ma et al (2018) investigated the fire history in subtropical China and its relation with climate change and human activity.…”
Section: Introductionmentioning
confidence: 99%
“…As the world’s most populous country, China is also the main emitter of greenhouse gases (Streets et al., 2001). Therefore, numerous researchers analyzed China’s impact on climate change.…”
Never before have we had so many different ways to investigate China subtropical climate change as it is gradually becoming significant to know the details about the relationship between climate change and China, specifically in subtropical areas. To learn the current situation and emerging trends of China subtropical climate change research, this article utilizes CiteSpace to provide a general picture about the research field by analyzing 926 publications between 1990 and 2017, which are retrieved from Web of Science. According to the results, some interesting findings are illustrated in this study: (a) The papers that investigate interdecadal change and data-model comparison made great theoretical contributions to China subtropical climate change research; (b) China, the United States, Australia, and Germany are the biggest contributors to China subtropical climate change research, and most of the productive institutions are from China; (c) the emerging trends of China subtropical climate change research are "soil moisture," "net ecosystem exchange," and "autotrophic respiration"; and (d) most of China subtropical climate change studies are related to atmospheric model intercomparison project model, CO 2 fertilization, and pollen record. This article provides an overall analysis about China subtropical climate change research for researchers who are interested in this field to do further investigations.
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