农业环境科学学报2025，Vol.44Issue(4)：1046-1055,10.DOI:10.11654/jaes.2024-0365
黄河三角洲稻田退耕对土壤生态化学计量特征的影响
Effects of returning paddy field to wetland on the soil ecological stoichiometric characteristics in the Yellow River Delta
摘要
Abstract
In order to explore the effects of returning paddy field on ecological stoichiometric characteristics of soil carbon(C),nitrogen(N)and phosphorus(P),returned paddy fields for 2 years(TG2a)and for 15 years(TG15a)were selected in the Yellow River Delta,and the paddy field(DT)and natural wetland(ZR)were selected as the controls,to study the ecological stoichiometric characteristics of soil carbon,nitrogen and phosphorus in paddy field,and also to reveal the key impacting factors.The results showed that the mean values of total organic carbon(TOC),total nitrogen(TN)and total phosphorus(TP)contents of different soils were 1.30-3.86,0.30-1.03 g·kg-1,and 0.39-0.72 g·kg-1,respectively.A decreased was found for the contents of TOC,TN and TP in the TG2a soil compared to DT,while an increase was found in the TG15a soil compared to TG2a.The mean ratios of C∶N,C∶P and N∶P in soils were 4.31-5.81,8.23-17.56 and 1.56-4.10,and values of C∶N varied with soil layers and those of C∶P and N∶P increased overall in the returned paddy field.The study indicated that the contents of dissolved organic carbon and clay were the main factors affecting the changes in TOC,TN,TP and their ecological stoichiometric characteristics in soils as a response to returning paddy field to wetland.关键词
碳/氮/磷/生态化学计量特征/退耕还湿/稻田/黄河三角洲Key words
carbon/nitrogen/phosphorus/ecological stoichiometric characteristics/returning to wetland/paddy field/the Yellow River Delta分类
农业科技引用本文复制引用
王琦璇,杨继松,卢国伟,孙丹丹,王志康,周迪,邵秋玲..黄河三角洲稻田退耕对土壤生态化学计量特征的影响[J].农业环境科学学报,2025,44(4):1046-1055,10.基金项目
国家自然科学基金项目(42271055) （42271055）
"黄河三角洲学者"人才工程项目和山东省高等学校青创团队项目(2022KJ118)National Natural Science Foundation of China(42271055) （2022KJ118）
Yellow River Delta Scholar Talent Project,and Project of the Youth Innovation Teams of Universities in Shandong Province(2022KJ118) （2022KJ118）
