Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2160831606', 'doi': 'https://doi.org/10.1111/j.1469-8137.2006.01775.x', 'title': 'Light rings in Chinese pine (<i>Pinus tabulaeformis</i>) in semiarid areas of north China and their palaeo‐climatological potential', 'display_name': 'Light rings in Chinese pine (<i>Pinus tabulaeformis</i>) in semiarid areas of north China and their palaeo‐climatological potential', 'publication_year': 2006, 'publication_date': '2006-06-16', 'ids': {'openalex': 'https://openalex.org/W2160831606', 'doi': 'https://doi.org/10.1111/j.1469-8137.2006.01775.x', 'mag': '2160831606', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/16918549'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1111/j.1469-8137.2006.01775.x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S58631098', 'display_name': 'New Phytologist', 'issn_l': '0028-646X', 'issn': ['0028-646X', '1469-8137'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5074753005', 'display_name': 'Eryuan Liang', 'orcid': 'https://orcid.org/0000-0002-8003-4264'}, 'institutions': [{'id': 'https://openalex.org/I4210141476', 'display_name': 'Institute of Tibetan Plateau Research', 'ror': 'https://ror.org/03zn6c508', 'country_code': 'CN', 'type': 'facility', 'lineage': ['https://openalex.org/I19820366', 'https://openalex.org/I4210141476']}, {'id': 'https://openalex.org/I19820366', 'display_name': 'Chinese Academy of Sciences', 'ror': 'https://ror.org/034t30j35', 'country_code': 'CN', 'type': 'government', 'lineage': ['https://openalex.org/I19820366']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Eryuan Liang', 'raw_affiliation_strings': ['Institute of Tibetan Plateau Research, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China'], 'affiliations': [{'raw_affiliation_string': 'Institute of Tibetan Plateau Research, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China', 'institution_ids': ['https://openalex.org/I4210141476', 'https://openalex.org/I19820366']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5049472503', 'display_name': 'Dieter Eckstein', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I159176309', 'display_name': 'Universität Hamburg', 'ror': 'https://ror.org/00g30e956', 'country_code': 'DE', 'type': 'education', 'lineage': ['https://openalex.org/I159176309']}], 'countries': ['DE'], 'is_corresponding': False, 'raw_author_name': 'Dieter Eckstein', 'raw_affiliation_strings': ['Department of Wood Science, University of Hamburg, Leuschnerstr. 91, D-21031 Hamburg, Germany'], 'affiliations': [{'raw_affiliation_string': 'Department of Wood Science, University of Hamburg, Leuschnerstr. 91, D-21031 Hamburg, Germany', 'institution_ids': ['https://openalex.org/I159176309']}]}], 'institution_assertions': [], 'countries_distinct_count': 2, 'institutions_distinct_count': 3, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': {'value': 5510, 'currency': 'USD', 'value_usd': 5510, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 1.572, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 46, 'citation_normalized_percentile': {'value': 0.946375, 'is_in_top_1_percent': False, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 92, 'max': 93}, 'biblio': {'volume': '171', 'issue': '4', 'first_page': '783', 'last_page': '791'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11594', 'display_name': 'Tree-ring climate responses', 'score': 0.9998, 'subfield': {'id': 'https://openalex.org/subfields/1902', 'display_name': 'Atmospheric Science'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11594', 'display_name': 'Tree-ring climate responses', 'score': 0.9998, 'subfield': {'id': 'https://openalex.org/subfields/1902', 'display_name': 'Atmospheric Science'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10266', 'display_name': 'Plant Water Relations and Carbon Dynamics', 'score': 0.9975, 'subfield': {'id': 'https://openalex.org/subfields/2306', 'display_name': 'Global and Planetary Change'}, 'field': {'id': 'https://openalex.org/fields/23', 'display_name': 'Environmental Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10017', 'display_name': 'Geology and Paleoclimatology Research', 'score': 0.9627, 'subfield': {'id': 'https://openalex.org/subfields/1902', 'display_name': 'Atmospheric Science'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/tracheid', 'display_name': 'Tracheid', 'score': 0.6597668}, {'id': 'https://openalex.org/keywords/pinus-tabulaeformis', 'display_name': 'Pinus tabulaeformis', 'score': 0.63196146}, {'id': 'https://openalex.org/keywords/subarctic-climate', 'display_name': 'Subarctic climate', 'score': 0.5655535}, {'id': 'https://openalex.org/keywords/dendroclimatology', 'display_name': 'Dendroclimatology', 'score': 0.43164852}], 'concepts': [{'id': 'https://openalex.org/C162838533', 'wikidata': 'https://www.wikidata.org/wiki/Q1425870', 'display_name': 'Tracheid', 'level': 3, 'score': 0.6597668}, {'id': 'https://openalex.org/C2908576394', 'wikidata': 'https://www.wikidata.org/wiki/Q1073968', 'display_name': 'Pinus tabulaeformis', 'level': 2, 'score': 0.63196146}, {'id': 'https://openalex.org/C18678713', 'wikidata': 'https://www.wikidata.org/wiki/Q80205', 'display_name': 'Dendrochronology', 'level': 2, 'score': 0.59537196}, {'id': 'https://openalex.org/C81447805', 'wikidata': 'https://www.wikidata.org/wiki/Q5967371', 'display_name': 'Subarctic climate', 'level': 2, 'score': 0.5655535}, {'id': 'https://openalex.org/C2910048773', 'wikidata': 'https://www.wikidata.org/wiki/Q1924659', 'display_name': 'Pinus <genus>', 'level': 2, 'score': 0.5324337}, {'id': 'https://openalex.org/C191935318', 'wikidata': 'https://www.wikidata.org/wiki/Q148', 'display_name': 'China', 'level': 2, 'score': 0.4322305}, {'id': 'https://openalex.org/C68753075', 'wikidata': 'https://www.wikidata.org/wiki/Q2294113', 'display_name': 'Dendroclimatology', 'level': 3, 'score': 0.43164852}, {'id': 'https://openalex.org/C59822182', 'wikidata': 'https://www.wikidata.org/wiki/Q441', 'display_name': 'Botany', 'level': 1, 'score': 0.35884637}, {'id': 'https://openalex.org/C39432304', 'wikidata': 'https://www.wikidata.org/wiki/Q188847', 'display_name': 'Environmental science', 'level': 0, 'score': 0.33262366}, {'id': 'https://openalex.org/C127313418', 'wikidata': 'https://www.wikidata.org/wiki/Q1069', 'display_name': 'Geology', 'level': 0, 'score': 0.29446456}, {'id': 'https://openalex.org/C86803240', 'wikidata': 'https://www.wikidata.org/wiki/Q420', 'display_name': 'Biology', 'level': 0, 'score': 0.27908647}, {'id': 'https://openalex.org/C49799701', 'wikidata': 'https://www.wikidata.org/wiki/Q122811', 'display_name': 'Xylem', 'level': 2, 'score': 0.2379202}, {'id': 'https://openalex.org/C18903297', 'wikidata': 'https://www.wikidata.org/wiki/Q7150', 'display_name': 'Ecology', 'level': 1, 'score': 0.23529932}, {'id': 'https://openalex.org/C151730666', 'wikidata': 'https://www.wikidata.org/wiki/Q7205', 'display_name': 'Paleontology', 'level': 1, 'score': 0.17063981}, {'id': 'https://openalex.org/C205649164', 'wikidata': 'https://www.wikidata.org/wiki/Q1071', 'display_name': 'Geography', 'level': 0, 'score': 0.1535343}, {'id': 'https://openalex.org/C166957645', 'wikidata': 'https://www.wikidata.org/wiki/Q23498', 'display_name': 'Archaeology', 'level': 1, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D005075', 'descriptor_name': 'Biological Evolution', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D002980', 'descriptor_name': 'Climate', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D017753', 'descriptor_name': 'Ecosystem', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': True}, {'descriptor_ui': 'D028223', 'descriptor_name': 'Pinus', 'qualifier_ui': 'Q000502', 'qualifier_name': 'physiology', 'is_major_topic': True}, {'descriptor_ui': 'D028223', 'descriptor_name': 'Pinus', 'qualifier_ui': 'Q000033', 'qualifier_name': 'anatomy & histology', 'is_major_topic': True}, {'descriptor_ui': 'D002681', 'descriptor_name': 'China', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008027', 'descriptor_name': 'Light', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D028223', 'descriptor_name': 'Pinus', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D013997', 'descriptor_name': 'Time Factors', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1111/j.1469-8137.2006.01775.x', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S58631098', 'display_name': 'New Phytologist', 'issn_l': '0028-646X', 'issn': ['0028-646X', '1469-8137'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/16918549', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'score': 0.75, 'display_name': 'Climate action', 'id': 'https://metadata.un.org/sdg/13'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 45, 'referenced_works': ['https://openalex.org/W1579243815', 'https://openalex.org/W1617257630', 'https://openalex.org/W1892599811', 'https://openalex.org/W1965200087', 'https://openalex.org/W1967305455', 'https://openalex.org/W1976114212', 'https://openalex.org/W1976296403', 'https://openalex.org/W1981256179', 'https://openalex.org/W1982448022', 'https://openalex.org/W2013549022', 'https://openalex.org/W2021960178', 'https://openalex.org/W2029866731', 'https://openalex.org/W2031734863', 'https://openalex.org/W2032881125', 'https://openalex.org/W2036783026', 'https://openalex.org/W2037780565', 'https://openalex.org/W2039916321', 'https://openalex.org/W2040207102', 'https://openalex.org/W2043023989', 'https://openalex.org/W2043730215', 'https://openalex.org/W2047111222', 'https://openalex.org/W2047346723', 'https://openalex.org/W2050738130', 'https://openalex.org/W2087487171', 'https://openalex.org/W2089533105', 'https://openalex.org/W2097650734', 'https://openalex.org/W2110857934', 'https://openalex.org/W2123507856', 'https://openalex.org/W2124978037', 'https://openalex.org/W2151083598', 'https://openalex.org/W2157762293', 'https://openalex.org/W2160665551', 'https://openalex.org/W2268825484', 'https://openalex.org/W2283666662', 'https://openalex.org/W2415014737', 'https://openalex.org/W2798159342', 'https://openalex.org/W2997756893', 'https://openalex.org/W4231026619', 'https://openalex.org/W4235611783', 'https://openalex.org/W4243692808', 'https://openalex.org/W4248079403', 'https://openalex.org/W4249675036', 'https://openalex.org/W4253867394', 'https://openalex.org/W602087022', 'https://openalex.org/W71906295'], 'related_works': ['https://openalex.org/W4229006133', 'https://openalex.org/W3096060011', 'https://openalex.org/W2767029899', 'https://openalex.org/W2751039290', 'https://openalex.org/W2403644445', 'https://openalex.org/W2110238074', 'https://openalex.org/W2015370662', 'https://openalex.org/W2004368506', 'https://openalex.org/W1556515778', 'https://openalex.org/W101748868'], 'abstract_inverted_index': {'•': [0, 39, 78, 135], 'Light': [1, 79], 'rings': [2, 21, 50, 80, 104, 107, 169], 'in': [3, 36, 51, 56, 81, 141, 160], 'conifer': [4], 'trees': [5], 'are': [6], 'characterized': [7], 'by': [8], 'a': [9, 163], 'light-coloured,': [10], 'narrow': [11], 'latewood': [12, 117], 'band': [13], 'of': [14, 48, 60, 73, 89, 98, 102, 114, 156], 'thin-walled': [15], 'tracheids.': [16], 'Most': [17], 'reports': [18], 'on': [19], 'light': [20, 49, 103, 168], 'have': [22], 'been': [23, 132], 'for': [24, 175], 'subarctic': [25], 'and': [26, 29, 65, 68, 95, 105, 128], 'subalpine': [27], 'regions,': [28], 'little': [30], 'is': [31], 'known': [32], 'about': [33], 'their': [34, 74, 90, 129], 'occurrence': [35, 47], 'semiarid': [37, 58], 'areas.': [38], 'Dendrochronological': [40], 'methods': [41], 'were': [42, 76, 84, 108, 124], 'used': [43, 172], 'to': [44, 86, 145, 154], 'date': [45], 'the': [46, 57, 69, 87, 99, 112, 115, 151, 157], 'Chinese': [52, 82], 'pine': [53, 83], '(Pinus': [54], 'tabulaeformis)': [55], 'region': [59], 'north': [61], 'China.': [62], 'The': [63, 92, 136], 'anatomical': [64], 'chemical': [66], 'characteristics': [67, 138], 'potential': [70], 'environmental': [71], 'controls': [72], 'formation': [75, 143], 'investigated.': [77], 'dated': [85], 'year': [88, 159], 'formation.': [91], 'wall': [93], 'thickness': [94], 'lumen': [96], 'diameter': [97], 'wood': [100], 'cells': [101], 'reference': [106], 'distinctly': [109], 'different.': [110], 'However,': [111], 'configuration': [113], 'light-ring': [116, 142], 'cell': [118], 'walls': [119], 'was': [120], 'normal,': [121], 'although': [122], 'they': [123], 'thinner': [125], 'than': [126], 'average,': [127], 'lignification': [130], 'had': [131], 'completed': [133], 'normally.': [134], 'climate': [137], 'that': [139, 167], 'result': [140], 'appear': [144], 'be': [146, 171], 'ongoing': [147], 'severe': [148], 'drought': [149, 177], 'from': [150], 'previous': [152], 'autumn': [153], 'July': [155], 'current': [158], 'conjunction': [161], 'with': [162], 'warm': [164], 'summer,': [165], 'suggesting': [166], 'can': [170], 'as': [173], 'indicators': [174], 'past': [176], 'events.': [178]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2160831606', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 2}, {'year': 2021, 'cited_by_count': 2}, {'year': 2020, 'cited_by_count': 2}, {'year': 2019, 'cited_by_count': 1}, {'year': 2018, 'cited_by_count': 8}, {'year': 2017, 'cited_by_count': 2}, {'year': 2016, 'cited_by_count': 5}, {'year': 2015, 'cited_by_count': 2}, {'year': 2014, 'cited_by_count': 1}, {'year': 2013, 'cited_by_count': 4}, {'year': 2012, 'cited_by_count': 1}], 'updated_date': '2024-12-16T13:53:10.527092', 'created_date': '2016-06-24'}