{"id":270507,"date":"2023-07-30T21:10:47","date_gmt":"2023-07-30T19:10:47","guid":{"rendered":"https:\/\/climatescience.press\/?p=270507"},"modified":"2023-07-30T21:11:02","modified_gmt":"2023-07-30T19:11:02","slug":"climate-change-found-to-have-fostered-the-rise-and-fall-of-the-tibetan-empire-from-600-to-800-ad","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=270507","title":{"rendered":"Climate change found to have fostered the rise and fall of the Tibetan Empire from 600 to 800 AD"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

From Phys.org<\/a><\/em><\/p>\n\n\n\n

by\u00a0Science China Press<\/a><\/p>\n\n\n\n

\"\"
The varves of JiangCo are annual varves, each layer divided into coarse-grained and fine-grained sub-layers. Credit: Science China Press<\/figcaption><\/figure>\n\n\n\n

Results are in from a study led by Dr. Juzhi Hou, Dr. Fahu Chen, and Dr. Kejia Ji (Group of Alpine Paleoecology and Human Adaptation (ALPHA), State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences).<\/p>\n\n\n\n

The research team obtained a high-resolution climate record of the past 2,000 years using the varved sediments of Lake JiangCo on the central Tibetan Plateau. The warm and humid climate during the 7th-9th centuries AD and the subsequent cold and aridification are consistent with the rise and fall of the Tibetan Empire. Climate change is one of the possible reasons for the rise and fall of the Tibetan Empire.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

During the preliminary field investigation, the researchers found that the varved sediment in JiangCo, a lake on the central Tibetan Plateau, was well-preserved. Through earlier varve counting and other radiometric dating methods, the time range of a gravity core of up to 1 meter covering the past 2,000 years was determined.<\/p>\n\n\n\n

Subsequently, high-resolution XRF elements scanning and carbonate carbon\/oxygen isotope analysis were performed on the sediment, and the temperature and precipitation records for the past 2000 years were reconstructed using biomarkers such as alkenones. The results showed that the 7th-9th centuries AD was an unusually warm and humid period.<\/p>\n\n\n\n

\"\"
The element titanium is an allothigenic element that reflects changes in precipitation. The dry and wet periods reflected by titanium are highly consistent with the timing of historical events such as the treaties and wars of the Tibetan Empire. Credit: Science China Press<\/figcaption><\/figure>\n\n\n\n

The researchers compared this period with historical literature and found that it coincided with the only unified local regime, the Tibetan Empire, which existed on the Tibetan Plateau at that time. The changes in warm and humid climate and cold and dry climate were highly correlated with the foreign policy changes of the Tibetan Empire.<\/p>\n\n\n\n

Combined with the ecological niche model, the researchers simulated the area of highland barley cultivation during the warm and humid period of the 7th-9th centuries AD and the subsequent cold and dry period, which differed by about 10.88 million hectares.<\/p>\n\n\n\n

On the ecologically fragile environment of the Tibetan Plateau,\u00a0climate<\/a>\u00a0change is one of the factors that constrains human activities. This latest research results show that warm and humid climates promote the development of agriculture and animal husbandry on the\u00a0plateau<\/a>, while cold and\u00a0arid conditions<\/a>\u00a0have negative effects on agriculture and\u00a0animal husbandry<\/a>.<\/p>\n\n\n\n

Climate change played a important role in the rise and fall of the Tibetan Empire. Today, with the warming and humidification of the Tibetan Plateau, studying the human-environment interactions in the past has important implications for modern responses to\u00a0climate change<\/a>.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The findings are published in the journal\u00a0Science Bulletin<\/em>.<\/p>\n\n\n\n

More information:<\/strong>\u00a0Juzhi Hou et al, Climate change fostered rise and fall of the Tibetan Empire during 600\u2013800 AD,\u00a0Science Bulletin<\/em>\u00a0(2023).\u00a0DOI: 10.1016\/j.scib.2023.04.040<\/a><\/p>\n\n\n\n

Provided by\u00a0Science China Press<\/a><\/p>\n\n\n\n

<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

The research team obtained a high-resolution climate record of the past 2,000 years using the varved sediments of Lake JiangCo on the central Tibetan Plateau. The warm and humid climate during the 7th-9th centuries AD and the subsequent cold and aridification are consistent with the rise and fall of the Tibetan Empire. Climate change is one of the possible reasons for the rise and fall of the Tibetan Empire.<\/p>\n","protected":false},"author":121246920,"featured_media":270514,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691818056,691821477,691821472,691821475,691821476],"class_list":{"0":"post-270507","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-climate-change","9":"tag-humidification","10":"tag-research","11":"tag-tibetan-empire","12":"tag-warming","14":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2023\/07\/00plateaumap_lg-copy-2.jpg?fit=1372%2C792&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-18n1","jetpack-related-posts":[{"id":202331,"url":"https:\/\/climatescience.press\/?p=202331","url_meta":{"origin":270507,"position":0},"title":"3 New Studies Show Atlantic Tipping Point Unrealistic\u2026\u201d Muted Response\u201d \u2026\u201d Changes to Be Viewed with Caution\u201d","author":"uwe.roland.gross","date":"31\/05\/2022","format":false,"excerpt":"Yet another 3 recent journal publications show there\u2019s no Atlantic tipping point taking place.\u00a0 Two days ago\u00a0we reported\u00a0on the most recent video by the German\u00a0Klimaschau\u00a0here, which reported there are a number of new published papers showing that the AMOC is\u00a0not weakening, thus contradicting what some climate alarmists claim. 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