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三峡水库的建造对库区的土壤有机碳含量及土壤肥力产生了显著影响。本研究以三峡库区重庆段为对象，通过对土壤剖面采样数据进行相关性分析并构建结构方程模型，探究库区土壤有机碳的分布情况及土壤有机碳含量与相关影响因子的关系。结果表明：（1）三峡库区土壤有机碳含量呈现出随土壤深度增加而递减的趋势，且递减速率逐渐减缓。（2）不同土地利用类型下土壤有机碳的剖面分布模式相似，林地土壤有机碳含量（5.20 g/kg）高于耕地（4.70 g/kg）。（3）土壤有机碳含量与土壤层深度和土壤可蚀性因子（k）存在显著相关性（P<0.001）。（4）土壤有机碳主要通过降低土壤可蚀性因子（SPC=-67.068,P<0.001）增强固碳潜力，而土壤可蚀性因子主要受土壤pH值和黏粒含量（CLA,<2μm）的影响。研究结果可以为三峡库区土壤固碳及增肥提供思路。
Abstract：The construction of the Three Gorges Reservoir has affected the soil organic carbon content and soil fertility in the Reservoir area. Taking its Chongqing section as the research object, this study carried out the correlation analysis of the data through soil profile sampling and constructed the structural equation model to explore the distribution of soil organic carbon in the reservoir area and the relationship between soil organic carbon content and related influencing factors. The results show that:(1) The soil organic carbon content in the Three Gorges Reservoir area shows a decreasing trend with the increase of soil depth, and the deceleration rate gradually slows down.(2) The distribution patterns of soil organic carbon in soil profiles under different land use types are similar, and the soil organic carbon content of forest land(5.20 g/kg) is higher than that of cultivated land(4.70 g/kg).(3) There is a significant correlation between soil organic carbon content and soil layer depth and soil erodibility factor(k)(P<0.001).(4) Soil organic carbon is mainly enhanced by reducing the soil erodibility factor(SPC =-67.068, P<0.001), which is mainly affected by soil pH and clay content(CLA: < 2 μm). The results of this study can provide ideas for soil carbon sequestration and fertilization in the Three Gorges Reservoir area.
[1]CHEN M M, ZHANG S R, LIU L, et al. Organic fertilization increased soil organic carbon stability and sequestration by improving aggregate stability and iron oxide transformation in saline-alkaline soil[J].Plant Soil,2022,474(1):233-249.
[2]FRIEDLINGSTEIN P. Carbon cycle feedbacks and future climate change[J]. Philosophical Transactions Series A,Mathematical, Physical,and Engineering Sciences,2015,373(2054):20140421.
[3]朱张羽，方华军，沈菊培，等.东北典型黑土区土壤有机碳结构特征及其影响因素[J].生态学报，2024,44(21):9815-9825.ZHU Z Y, FANG H J, SHEN J P, et al. Characteristics of soil organic carbon structure in the black soil region in Northeast China and its influencing factors[J]. Acta Ecologica Sinica,2024,44(21):9815-9825.(in Chinese)
[4]钟泽坤.增温和降雨改变对黄土丘陵区撂荒草地土壤碳循环关键过程的影响[D].杨凌：西北农林科技大学，2021.ZHONG Z K. Effects of Experimental Warming and Precipitation Manipulation on the Key Processes of Soil Carbon Cycle in Abandoned Farmland of the Loess Hilly Region[D].Yangling:Northwest A&F University,2021.(in Chinese)
[5]刘敏.中国土壤有机碳研究综述[C]//国家林业局，广西壮族自治区人民政府，中国林学会.第二届中国林业学术大会——S10林业与气候变化论文集.中国林业科学研究院热带林业研究所，2009:231-236.LIU M. Review on Soil Organic Carbon Research in China[C]//State Forestry Administration,the People’s Government of the Guangxi Zhuang Autonomous Region,Chinese Society of Forestry. Proceedings of the 2nd China Forestry Academic Conference:S10 Forestry and Climate Change. Research Institute of Tropical Forestry,Chinese Academy of Forestry,2009:231-236.(in Chinese)
[6]MOHARANA P C, NAITAM R K, VERMA T P, et al. Effect of long-term cropping systems on soil organic carbon pools and soil quality in western plain of hot arid India[J]. Archives of Agronomy and Soil Science,2017,63(12):1661-1675.
[7]蔡亚楠，鞠正山，黄勤，等.土壤有机碳汇内涵与核算方法辨析[J].生态学报，2024,44(2):602-611.CAI Y N, JU Z S, HUANG Q, et al. Analysis on the contents and methods of soil organic carbon sink[J]. Acta Ecologica Sinica,2024,44(2):602-611.(in Chinese)
[8]王艺杰，于丽君，张稳，等.造林后表层土壤有机碳变化及影响因素分析[J].地理与地理信息科学，2022,38(2):103-11.WANG Y J, YU L J, ZHANG W, et al. Analysis on changes of topsoil organic carbon after afforestation and the influencing factors[J].Geography and Geo-Information Science,2022,38(2):103-111.(in Chinese)
[9]谷欣逾，赵明松，王世航，等.近40年安徽省土壤有机碳密度时空变化及驱动力分析[J].环境科学，2025,46(12):7705-7714.GU X Y, ZHAO M S, WANG S H, et al. Spatial-temporal changes and driving forces of soil organic carbon density in Anhui Province in recent 40 years[J]. Environmental Science,2025,46(12):7705-7714.(in Chinese)
[10]CHAOPRICHA N T, MARÍN-SPIOTTA E. Soil burial contributes to deep soil organic carbon storage[J]. Soil Biology and Biochemistry,2014(69):251-264.
[11]DOU X L, ZHANG C Z,CHEN L, et al. Calcium forms influence soil organic carbon by mediating labile organic carbon fractions,carbon pool management indices and microbial communities in calcareous alkaline soils[J].Plant and Soil,2025,512(1):801-817.
[12]YANG Y, WU J, ZHAO S, et al. Effects of long-term super absorbent polymer and organic manure on soil structure and organic carbon distribution in different soil layers[J].Soil&Tillage Research,2021(206):104781.
[13]陈吉臻，沈琛琛，樊子豪，等.三峡库区柑橘园土壤有机碳关键影响因子分析[J].长江流域资源与环境，2024,33(11):2440-2450.CHEN J Z, SHEN C C, FAN Z H,et al. Influencing factors of soil organic carbon in citrus orchard in the Three Gorges Reservoir area[J]. Resources and Environment in the Yangtze Basin,2024,33(11):2440-2450.(in Chinese)
[14]黄小辉，冯大兰，朱恒星，等.三峡库区马尾松林土壤有机碳的组成及含量[J].北京林业大学学报，2014,36(2):38-43.HUANG X H, FENG D L, ZHU H X, et al. Composition and content of soil organic carbon in Pinus massoniana pure forest in the Three Gorges Reservoir area of Central China[J].Journal of Beijing Forestry University,2014,36(2):38-43.(in Chinese)
[15]陈茂林，官冬杰，孙灵丽.三峡库区农户生计变化与土地利用功能空间冲突类型识别[J].资源开发与市场，2023,39(1):69-77.CHEN M L, GUAN D J, SUN L L. Identification of spatial conflict type between household livelihood change and land use function in the Three Gorges Reservoir area[J].Resource Development&Market,2023,39(1):69-77.(in Chinese)
[16]田耀武，黄志霖，肖文发，等.三峡库区兰陵溪流域森林土壤有机碳、有机质与容重间的回归模型[J].华南农业大学学报，2016,37(1):89-95.TIAN Y W, HUANG Z L, XIAO W F, et al. Organic carbon,organic matter and bulk density regression models for forest soils in Lanlingxi watershed,Three Gorges Reservoir area[J].Journal of South China Agricultural University,2016,37(1):89-95.(in Chinese)
[17]陈亮中，肖文发，唐万鹏，等.三峡库区几种退耕还林模式下土壤有机碳研究[J].林业科学，2007,43(4):111-114.CHEN L Z, XIAO W F, TANG W P, et al. Study on soil organic carbon under several reafforestation patterns in the Three Gorges Reservoir area[J].Scientia Silvae Sinicae,2007,43(4):111-114.(in Chinese)
[18]宁一泓，王海燕，侯文宁，等.重庆笋溪河流域土壤有机碳特征及影响因素[J].森林与环境学报，2022,42(5):552-560.NING Y H, WANG H Y,HOU W N, et al. Characteristics and influencing factors of soil organic carbon in the Sunxi River Basin,Chongqing[J]. Journal of Forest and Environment,2022,42(5):552-560.(in Chinese)
[19]王渊刚，罗格平，冯异星，等.天山北麓不同土地覆被下土壤有机碳垂直分布特征[J].干旱区研究，2013,30(5):913-921.WANG Y G, LUO G P, FENG Y X, et al. Vertical distribution characteristics of soil organic carbon in different land cover types in northern piedmont of the Tianshan Mountains[J].Arid Zone Research,2013,30(5):913-921.(in Chinese)
[20]李小涵，郝明德，王朝辉，等.农田土壤有机碳的影响因素及其研究[J].干旱地区农业研究，2008,26(3):176-181.LI X H, HAO M D, WANG Z H, et al. Factors affecting soil organic carbon in cropland and their regulation[J].Agricultural Research in the Arid Areas,2008,26(3):176-181.(in Chinese)
[21]薛鹏，刘勇.三峡库区4种林分类型土壤有机碳研究[J].人民长江，2016,47(5):11-16.XUE P, LIU Y. Soil organic carbon in four stand types of Three Gorges Reservoir area[J].Yangtze River,2016,47(5):11-16.(in Chinese)
[22]王鹏，冉义国，梅渝，等.周期性水位波动对三峡水库消落带土壤有机碳含量和密度的影响[J].土壤，2024,56(3):672-680.WANG P, RAN Y G, MEI Y, et al. Effects of periodic water-level fluctuations on soil organic carbon content and density in riparian zone of the Three Gorges Reservoir[J].Soils,2024,56(3):672-680.(in Chinese)
[23]彭新华，张斌，赵其国.土壤有机碳库与土壤结构稳定性关系的研究进展[J].土壤学报，2004,41(4):618-623.PENG X H, ZHANG B, ZHAO Q G. A review on relationship between soil organic carbon pools and soil structure stability[J].Acta Pedologica Sinica,2004,41(4):618-623.(in Chinese)
[24]李世文，卢居勐，黄耿，等.花生/玉米间作增加花生土壤微生物活性促进土壤有机碳固持[J].土壤学报，2025,62(3):801-810LI S W, LU J M, HUANG G, et al. Peanut/maize intercropping promotes peanut soil organic carbon sequestration by increasing soil microbial activity[J].Acta Pedologica Sinica,2025,62(3):801-810.(in Chinese)
[25]SCHINDLBACHER A, RODLER A, KUFFNER M, et al.Experimental warming effects on the microbial community of a temperate mountain forest soil[J].Biology and Biochemistry,2011,43(7):1417-1425.
[26]STREIT K, HAGEDORN F, HILTBRUNNER D, et al.Soil warming alters microbial substrate use in alpine soils[J].Global Change Biology,2014,20(4):1327-1338.
基本信息:
DOI：10.19478/j.cnki.2096-2347.2026.01.01
中图分类号:S153.6
引用信息:
[1]袁昆山,朱唐巍,于子涵,等.三峡库区土壤有机碳含量及其影响因素分析[J].三峡生态环境监测,2026,11(01):1-9.DOI:10.19478/j.cnki.2096-2347.2026.01.01.
基金信息:
国家自然科学基金项目（42201333）; 重庆市博士后基金项目（CSTB2022NSCQ-BHX0734）; 大学生创新创业训练计划项目（X202410618038）
2025-10-10
2025-10-10
2025-10-10