{"corpus_id":31211279,"paper_sha":"93c70b4ee4d955fa0dc0235f34351e8ef9237bf1","doi":"10.1016/j.jenvman.2016.11.016","arxiv_id":null,"pmid":27863772,"pmcid":null,"mag_id":2554721535,"dblp_id":null,"acl_id":null,"title":"The evolution of crop cultivation and paleoenvironment in the Longji Terraces, southern China: Organic geochemical evidence from paleosols.","year":2017,"publication_date":"2017-11-01","venue":"Journal of Environmental Management","journal":{"name":"Journal of environmental management","pages":"\n          524-531\n        ","volume":"202 Pt 3"},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article"],"s2_fields_of_study":["Agricultural and Food Sciences","Medicine","Geography","Environmental Science"],"reference_count":58,"citation_count":12,"influential_citation_count":1,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":[{"d":"Agriculture","mj":true,"ui":"D000383"},{"d":"China","mj":false,"ui":"D002681"},{"d":"Climate Change","mj":false,"ui":"D057231"},{"d":"Crops, Agricultural","mj":false,"ui":"D018556"},{"d":"Ecosystem","mj":true,"ui":"D017753"},{"d":"Humans","mj":false,"ui":"D006801"},{"d":"Soil","mj":false,"ui":"D012987"}],"chemicals":[{"n":"Soil","ui":"D012987","reg":"0"}],"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"The Longji ancient agricultural terraces in the Longji Mountain area (Guilin, southern China), which still remain in use, are famous for their magnificent terraced landscape with a mix of ecosystem and human inhabitation. Previous research has revealed the genesis and preliminary paleoenvironmental record of the agricultural terraces, but little is known about variations in crop cultivation over time. In this study, organic geochemical analyses and radiocarbon dating of an aggradational cultivated soil from a terrace profile were used to explore crop type variation and relevant paleoenvironmental change during the period of cultivation on the Longji Terraces. Hydroponic farming with rice (C3) planting has been the dominant cultivation mode since the initial construction of the terraces. Warm-dry climate contributed to the growth of drought-tolerant crop (C4) cultivation in the late 15th century. Temperature deterioration during the Little Ice Age had a negative impact on dry and hydroponic farming activities from the late 15th century to the late 19th century, while climate warming after the Little Ice Age promoted the redevelopment of hydroponic farming.","claims":[{"public_id":"cl_8e3150a91024675ef4fc00dfe58402c5","status":"active","text":"Climate warming after the Little Ice Age promoted the redevelopment of hydroponic farming.","confidence":0.92,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_8e3150a91024675ef4fc00dfe58402c5"},{"public_id":"cl_5b0afd81beb516e4211c5913aa038586","status":"active","text":"Hydroponic farming with rice planting has been the dominant cultivation mode since the initial construction of the Longji Terraces.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_5b0afd81beb516e4211c5913aa038586"},{"public_id":"cl_fc9241a80ab8d5c6ce6b2c9593818a9e","status":"active","text":"Organic geochemical analyses and radiocarbon dating of an aggradational cultivated soil were used to reconstruct crop type variation and paleoenvironmental change during terrace cultivation.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_fc9241a80ab8d5c6ce6b2c9593818a9e"},{"public_id":"cl_cde3d879229a1b4a95c495d4d5b6fd3d","status":"active","text":"Temperature deterioration during the Little Ice Age negatively affected both dry and hydroponic farming from the late 15th century to the late 19th century.","confidence":0.95,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_cde3d879229a1b4a95c495d4d5b6fd3d"},{"public_id":"cl_8469d4fa887603f0d1f6b7cd7624037e","status":"active","text":"Warm-dry climate contributed to the growth of drought-tolerant C4 crop cultivation in the late 15th century.","confidence":0.93,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_8469d4fa887603f0d1f6b7cd7624037e"}],"concepts":[{"public_id":"co_113e75f7ff3ac0dc7160367c2c57ee72","status":"active","name":"drought-tolerant crop","description":"A crop adapted to grow under limited water availability.","types":["crop type"],"aliases":["drought-resistant crop"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_113e75f7ff3ac0dc7160367c2c57ee72"},{"public_id":"co_1531c7b243b3fd9279c18067579b8341","status":"active","name":"C4","description":"A photosynthetic pathway associated with many drought-tolerant plants.","types":["photosynthetic pathway"],"aliases":["C4 crop","C4 plants"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_1531c7b243b3fd9279c18067579b8341"},{"public_id":"co_277a1b64cec9b3ff19f36e973a456686","status":"active","name":"dry farming","description":"Cultivation that relies mainly on rainfall rather than continuous flooding or irrigation.","types":["cultivation mode"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_277a1b64cec9b3ff19f36e973a456686"},{"public_id":"co_50059ba653ba8d5ac047814f21007fd9","status":"active","name":"rice planting","description":"Cultivation of rice as the planted crop.","types":["crop cultivation"],"aliases":["rice cultivation"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_50059ba653ba8d5ac047814f21007fd9"},{"public_id":"co_55a66ef9c436af1e7c1c616e70c7fe08","status":"active","name":"Little Ice Age","description":"A period of cooler climate conditions referenced in the terrace chronology.","types":["climate period"],"aliases":["LIA"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_55a66ef9c436af1e7c1c616e70c7fe08"},{"public_id":"co_65b4cea6644ea2804749702428a84bdf","status":"active","name":"Longji Terraces","description":"Ancient agricultural terraces in the Longji Mountain area of Guilin, southern China.","types":["archaeological site","agricultural landscape"],"aliases":["Longji ancient agricultural terraces"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_65b4cea6644ea2804749702428a84bdf"},{"public_id":"co_90163d4c51208cc91d286ec4b1164e4a","status":"active","name":"hydroponic farming","description":"A cultivation mode in which crops are grown with water-based, non-soil irrigation or water management.","types":["cultivation mode"],"aliases":["water-based farming"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_90163d4c51208cc91d286ec4b1164e4a"},{"public_id":"co_91dd79ae4e3b6c664247dea3e48e71ae","status":"active","name":"climate warming","description":"An increase in climate temperature after the cooler period discussed in the abstract.","types":["climatic trend"],"aliases":[],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_91dd79ae4e3b6c664247dea3e48e71ae"},{"public_id":"co_9c82f855e8b9a6a827851deb44032d02","status":"active","name":"aggradational cultivated soil","description":"A cultivated soil profile built up by sediment and soil accumulation over time.","types":["soil profile"],"aliases":["aggradational soil","cultivated soil profile"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_9c82f855e8b9a6a827851deb44032d02"},{"public_id":"co_cf065020ae85031c6666f412bdde21c2","status":"active","name":"warm-dry climate","description":"A climatic condition characterized by relatively high temperature and low moisture.","types":["climate condition"],"aliases":["warm and dry climate"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_cf065020ae85031c6666f412bdde21c2"},{"public_id":"co_d46fd9fd69b72a92dbe50273a51f10dc","status":"active","name":"radiocarbon dating","description":"A dating method that estimates the age of materials by measuring radioactive carbon.","types":["dating method"],"aliases":["14C dating","C-14 dating"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_d46fd9fd69b72a92dbe50273a51f10dc"},{"public_id":"co_d69d55a4b143d37ab62949629f5a3f49","status":"active","name":"organic geochemical analyses","description":"Chemical analyses of organic compounds used to infer past cultivation and environmental conditions.","types":["method"],"aliases":["organic geochemical analysis"],"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/concepts/co_d69d55a4b143d37ab62949629f5a3f49"}],"external_ids":{"DOI":"10.1016/j.jenvman.2016.11.016","ArXiv":null,"PubMed":27863772,"PubMedCentral":null,"MAG":2554721535,"DBLP":null,"ACL":null},"open_access":{"is_open_access":false,"pdf_url":null,"landing_url":"https://sah.borca.ai/papers/31211279","source":null,"pdf_url_source":null,"license":null,"reason":"pdf_url_not_indexed"},"reference_availability":{"status":"available","references_indexed":true,"full_text_available":false,"full_text_source":null,"count_basis":"semantic_scholar_metadata","extraction_status":"not_applicable","reason":null},"source":{"provider":"episteme2","base_corpus":"semantic_scholar_dump","freshness_mode":"unknown","basis":["semantic_scholar_metadata","postgres_metadata"],"limits":["paper metadata is based on indexed upstream scholarly datasets","claims and concepts are available only for extracted papers","absence of claims or concepts means no extracted graph data is available in this response"],"status":"available","degraded":false,"degraded_reasons":[],"diagnostics":{"status":"available","degraded":false,"degraded_reasons":[],"metadata_status":"available","graph_status":"available","abstract_status":"available"},"source_flags":5},"paper_id":634897,"paper_uid":"9c6cca95-4ed1-4533-9677-95ee567e751b","canonical_identity":{"paper_id":634897,"paper_uid":"9c6cca95-4ed1-4533-9677-95ee567e751b","identity_status":"available","lookup_basis":"semantic_scholar_external_id","compatibility_path":"corpus_id"},"url":"https://sah.borca.ai/papers/31211279"}