研究团队通过植物考古和碳-14测年研究方法，发现并测算出了距今9000年前的小高遗址炭化小豆遗 存，这是目前黄河流域已知最早的小豆遗存，使黄河流域小豆利用的时间提前至与日本绳文早期的证据 相当。在小高遗址，小豆与大豆、粟（谷子）、黍（糜子）等作物在日常生活遗迹中共出。 记者10月12日从山东大学获悉，该校与山东省文物考古研究院、美国圣路易斯华盛顿大学等单位联合组 成的国际团队在山东省淄博市小高遗址发现距今9000年的炭化小豆遗存，比此前在中国境内发现的炭化 小豆提早了4000年。相关成果近日刊发于《美国科学院院刊》。 小高遗址地处黄河下游地区，从地貌上看，该遗址位于一处由河流沉积与堆积形成的高洪泛平原 上。"从2017年，我们就对小高遗址进行了考古工作。小高遗址属于后李文化时期，该文化是一个距今 约9000至7000年的、逐渐走向定居的文化群体。"上述成果第一作者、山东大学考古学院教授陈雪香 说，在小高遗址共识别出45粒小豆，但是大多数遗存已经失去种皮，子叶分离。 据报道，日本此前发现了一万年前的小豆遗存。近期，日本一项研究提出了一种"日本驯化—回传中 国"的模型，即小豆首先在日本完成驯化，之后扩散到中国，并 ...

现代科技破解9000年前"古种"的身世之谜 中新网济南10月11日电 题：现代科技破解9000年前"古种"的身世之谜 小高遗址出土的炭化植物种子(A)黍 (B)粟 (C)狗尾草 (D)藜(E)胡枝子 (F)小豆 (G)大豆 (H)水稻。受访者供图 记者 赵晓 "一粒沉睡千年的种子从破土而出，到在实验室'验明正身'，大致要经过采土样、浮选、分选、显微镜 下鉴定、炭化实验等10多道程序。"山东大学考古学院教授陈雪香11日对记者表示，她所在的植物考古 实验室借助植物考古和碳-14测年法，已为9000年前的小豆、8000多年前的粟黍、4000多年前的小麦等 判定身份。 近期，由山东大学与山东省文物考古研究院、美国圣路易斯华盛顿大学等单位联合组成的国际团队，在 《美国科学院院刊》发表最新研究成果：山东淄博后李文化小高遗址发现距今约9000年的炭化小豆遗 存，比此前中国境内发现的炭化小豆提早了4000年。 小高遗址出土的炭化小豆(左)与现代小豆样品。受访者供图 "我们在小高遗址发现谷子、黍子、水稻、小豆、大豆等作物，其中小豆45颗，数量不多，但意义非 凡。"陈雪香解释说，"豆类+粟类"是中国北方黄河流域引入小麦前的旱作组 ...

Core Viewpoint - The discovery of carbonized adzuki beans dating back 9,000 years in Shandong challenges the previously held belief in Japan's central role in the origin of adzuki beans, suggesting that China is also a significant origin point for this crop [4]. Group 1: Archaeological Findings - An international team, including Shandong University and Washington University in St. Louis, published findings in the Proceedings of the National Academy of Sciences, revealing the earliest known adzuki bean remains in the Yellow River basin, predating previous discoveries in China by 4,000 years [2]. - The Xiaogao site, located in the lower Yellow River region, is associated with the Late Li culture, which dates back approximately 9,000 to 7,000 years [2]. - A total of 45 adzuki beans were identified at the site, although most had lost their seed coats and cotyledons [2]. Group 2: Methodology and Analysis - The age of the carbonized seeds was determined using carbon-14 dating, which measures the remaining carbon-14 content to estimate the time since the organism ceased living [2]. - The research team compared adzuki bean remains from over 140 archaeological sites across East Asia, noting significant evolutionary differences between beans from the Yellow River basin, Japan, and Korea [3]. Group 3: Agricultural Implications - The findings indicate that 9,000 years ago, the lower Yellow River region had already developed an early "millet + bean" cropping system, which significantly influenced the development of settled societies and civilization in the area [3]. - Adzuki beans played two crucial roles: improving soil through crop rotation with millet and providing essential protein and fats in the diet [3]. - The average size of the adzuki beans found at Xiaogao was 5.8 cubic millimeters, the smallest recorded among archaeological sites, with significant size increases in Chinese adzuki beans occurring between 4,000 to 2,000 years ago [3].

新华社北京7月31日电 日本气温多日来"高烧不退"，全国多地30日出现40摄氏度及以上高温，并创 下高温新纪录。 共同社等日本媒体援引日本气象厅数据报道，30日这天，西部兵库县丹波市最高气温达到41.2摄氏 度，创日本高温新纪录。另有至少三地气温达到或超过40摄氏度，多地达到或超过39摄氏度。 日本气象厅数据显示，30日当天，全国914处观测点中，271处气温超过35摄氏度；39处刷新高温纪 录。 极端天气给农业生产带来不利影响。由于高温少雨，福井县、新潟县和长野县等水稻产地严重缺 水，水稻长势受影响。丹波市农业协会的工作人员说，目前正值当地特产小豆的播种季节，已经有农户 报告高温缺水导致小豆不出芽。如果高温持续，可能严重影响收成。（惠晓霜） 7月10日，游客在日本大阪世博会园区内游览参观。新华社记者贾浩成摄 先前高温纪录出现于2020年8月的静冈县浜松市和2018年7月的埼玉县熊谷市，均为41.1摄氏度。 ...

Core Viewpoint - Douban, founded in 2005, has evolved into a platform that helps users discover quality content across various categories, including books, music, movies, and more, marking its 20th anniversary in 2025 [1] User Experiences - Users have shared their personal stories and connections with Douban, highlighting its role in their social and cultural lives [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] - Douban is perceived as a significant platform for networking and cultural exchange, with some users attributing personal relationships and professional opportunities to their engagement on the site [3][4][10][11] - The platform is described as a "cultural library" and a "stable anchor" for aesthetic and taste preferences, reflecting its impact on users' identities [10][12][14] Features and Functions - Users reminisced about favorite features and the impact of certain functionalities being removed, indicating the platform's evolving nature [3][4][5][6][7] - Douban's introduction of innovative features, such as the "小豆" (Little Douban), showcases its commitment to creativity and adaptation in the digital landscape [5][19] Cultural Significance - Douban is recognized as a vital part of the Chinese internet landscape, often compared to a "gene mutation" for its unique contributions to online culture [8] - The platform serves as a space for discussions and exchanges on various topics, including literature and entertainment, maintaining relevance in a rapidly changing digital environment [17][18]