| 苏航莹,李昕旸,王茜,李娟英,何文辉.生态环境导向开发（EOD）模式下田园综合体不同类型农用土壤中有机碳分布特征及影响因素[J].农业环境科学学报,2026,45(3):693-701. |
| 生态环境导向开发（EOD）模式下田园综合体不同类型农用土壤中有机碳分布特征及影响因素 |
| Distribution characteristics and environmental drivers of soil organic carbon in EOD-pastoral complex |
| 投稿时间：2025-03-19 |
| DOI：10.11654/jaes.2025-0259 |
| 中文关键词: 田园综合体 土壤有机碳 土壤碳储量 土壤碳汇 |
| 英文关键词: pastoral complex soil organic carbon soil carbon storage soil carbon sink |
| 基金项目:上海海洋大学校地合作项目（沪农科I2024003） |
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| 中文摘要: |
| 以上海市金山区枫泾镇生态环境导向开发（EOD）模式田园综合体内的农用地为研究对象，系统分析了该田园综合体不同农用地类型下单位面积碳储量（DSOC）、活性有机碳（LOC）、惰性有机碳（ROC）、溶解性有机碳（DOC）和微生物量碳（MBC）的分布特征，探讨了影响DSOC的主要环境因子，并估算了不同农用地类型的土壤碳汇量。结果表明：稻虾共作土壤中DSOC最高（非生长季为55.63 t·hm-2，生长季为63.46 t·hm-2），且生长季显著高于非生长季。土壤有机碳组分（LOC、ROC、DOC及MBC）含量与DSOC呈相同的变化趋势。相关性分析结果表明，土壤中的DSOC与总氮显著正相关，说明总氮是影响土壤有机碳的主要指标。田园综合体土壤总碳汇量为299.21 t·a-1，其中单位面积碳汇量较高的农用地利用类型有稻虾共作（7.83 t·hm-2·a-1）、立体农业区的果树种植（7.59t·hm-2·a-1），以及清水养殖（7.02 t·hm-2·a-1）。研究表明，推广稻虾共作、立体农业和清水养殖等特色农业模式，结合秸秆还田和沉水植物种植等措施，是进一步实现优化EOD模式田园综合体低碳发展的途径。 |
| 英文摘要: |
| This study methodologically examines the distribution patterns of carbon stock per unit area（DSOC）, labile organic carbon（LOC）, recalcitrant organic carbon（ROC）, dissolved organic carbon（DOC）, and microbial biomass carbon（MBC）across distinct land-use types within an ecologically oriented development（EOD）- based agricultural complex in Fengjing, Jinshan District, Shanghai. Furthermore, critical environmental drivers influencing soil organic carbon content and sequestration capacity across differentiated agricultural land-use types are systematically characterized. The results indicated that DSOC was highest in rice-shrimp co-cropping soils（non-growing season： 55.63 t·hm-2; growing season：63.46 t·hm-2）, the contents of soil organic carbon fractions（LOC, ROC, DOC, and MBC）exhibited consistent variation trends with DSOC. DSOC demonstrated a significant positive correlation with total nitrogen. Total nitrogen was identified as the primary driver governing DSOC spatial distribution. The investigation ultimately quantified soil carbon sinks in the pastoral complexes. Total carbon sink estimated at 299.21 t·a-1. Among predominant agricultural land use types, higher carbon sinks were found in rice and shrimp co-cropping soils（7.83 t· hm-2· a-1）, tree planting soils in stereoscopic agricultural areas（7.59 t· hm-2· a-1）, and purified water aquaculture（7.02 t·hm-2·a-1）. Therefore, carbon-neutral development pathways in EOD-oriented pastoral complexes could be strategically optimized through precision differentiation of cultivation practices, including integrated rice-shrimp farming, stereoscopic agricultural, and purified water aquaculture, along with the implementation of straw incorporation, and submerged vegetation cultivation. These methodologies systematically promote carbon-neutral development in the pastoral complex. |
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