三峡库区不同植被类型消落带土壤重金属含量的时空变异

生态学杂志

三峡库区不同植被类型消落带土壤重金属含量的时空变异

郭燕^1,2,程瑞梅^1,2*,杨邵^1,2,沈雅飞^1,2,肖文发^1,2,雷蕾^1,2,王晓荣^1,3

(¹中国林业科学研究院森林生态环境与保护研究所，国家林业局森林生态环境重点实验室，北京 100091；²南京林业大学南方现代林业协同创新中心，南京 210037； ³湖北林业科学研究院，武汉 430075)

出版日期:2018-08-10 发布日期:2018-08-10

Temporal and spatial variation of soil heavy metal contents in different vegetation types in Three Gorges Reservoir area.

GUO Yan^1,2, CHENG Rui-mei^1,2*, YANG Shao^1,2, SHEN Ya-fei^1,2, XIAO Wen-fa^1,2, LEI Lei^1,2, WANG Xiao-rong^1,3

(¹Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry/Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Beijing 100091, China; ²CoInnovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China; ³Hubei Forestry Academy, Wuhan 430075, China).

Online:2018-08-10 Published:2018-08-10

摘要/Abstract

摘要： 通过测定2009、2015年三峡库区秭归段典型植被（次生灌丛、弃耕地）消落带不同淹水高程（高程145～175 m）和对照高程（175～185 m）土壤重金属含量，揭示其年际时空变异特征，并运用地质累积指数（I_geo）对不同年限不同高程土壤中各类型重金属进行污染评价。结果表明：所测各年限不同高程土壤重金属含量为：铁＞锰＞铜（锌）。随水淹年限增加，次生灌丛比弃耕地积累更多的重金属；土壤重金属在低海拔地区的积累过程更加明显，且各水淹高程倾向于积累更多的铜、铁；而对照高程中倾向于积累更多的锌、锰。各植被类型土壤重金属存在迁移：随水位涨落周年增加，次生灌丛消落带各水淹高程的重金属铜、锌含量增加，增幅较2009年分别达41.1%、23.1%、50%、9.3%和28.6%、50.0%、38.6%、56.8%；而弃耕地重金属铜、锌含量减少，下降范围分别达28.3%～48.5%和15.5%～29.9%。通过污染评价可得：在经历7次水位涨落周年后，次生灌丛土壤主要受重金属铜、锌、铁、锰综合性污染；而弃耕地土壤主要受重金属铁、锰复合型污染。

关键词: 光合作用, 氮添加, 科尔沁沙地, CO₂排放

Abstract: In this study, transfer characteristics and the spatial and temporal variation of metal ions were investigated by measuring concentration of heavy metals in soil from waterlevel-fluctuating zone (flooded elevation: 145-175 m; control elevation: 175-185 m) at Zigui, Three Gorges Reservoir area in 2009 and 2015. Using the geo-accumulation index, we evaluated the pollution degree of heavy metals at different elevations in two waterflooded years. The results showed that the contents of heavy metals accumulated in soil at different altitudes both in 2009 and 2015 were in order of Fe>Mn>Cu (Zn). With the increased duration of flooding years, more heavy metals accumulated in secondary shrub land than in abandoned farmland. The accumulation of soil heavy metals was more obvious in low altitude area, and the flooded elevation facilitated the accumulation of Cu and Fe, while the control elevation facilitated the accumulation of Zn and Mn. The migration of heavy metals did occur in soil of various vegetations: with the increase of water level fluctuation period, the contents of Cu and Zn at water elevation in secondary shrub land was increased, up to 41.1%, 23.1%, 50% and 9.3%, and 28.6%, 50%, 38.6% and 56.8%, respectively. The contents of Cu and Zn in abandoned farmland decreased, with decreasing ranges of 28.3%-48.5% and 15.5%-29.9%, respectively. Through pollution assessment (I_geo), it was found that, after seven times of water level fluctuation, the soil in secondary shrub land was mainly affected by comprehensive pollution (including Cu, Zn, Fe and Mn) while the abandoned farmland was mainly affected by compound pollution (including Fe and Mn).

Key words: nitrogen addition, photosynthesis, CO₂ emission, Keerqin Sand Land.

郭燕,程瑞梅,杨邵,沈雅飞,肖文发,雷蕾,王晓荣. 三峡库区不同植被类型消落带土壤重金属含量的时空变异[J]. 生态学杂志.

GUO Yan, CHENG Rui-mei, YANG Shao, SHEN Ya-fei, XIAO Wen-fa, LEI Lei, WANG Xiao-rong. Temporal and spatial variation of soil heavy metal contents in different vegetation types in Three Gorges Reservoir area.[J]. cje.

[1]	郭晓茜, 徐智广, 刘婷, 鲍梦林, 严芳. 光照强度和无机磷耦合作用对铜藻生理的影响 [J]. 生态学杂志, 2026, 45(8): 2515-2521.
[2]	王凯, 刘畅, 吕林有, 张亮, 鞠向东. 施用油页岩废渣对风沙土理化性质及微生物生物量的影响 [J]. 生态学杂志, 2026, 45(7): 2128-2136.
[3]	刘思雨, 王雨苗, 李爽, 王广阳, 范树高, 殷燕玲. 高剂量吡虫啉胁迫对紫花苜蓿光合作用的抑制机制 [J]. 生态学杂志, 2026, 45(7): 2295-2304.
[4]	吴柳翠, 胡中民, 张卫荣, 程思源, 杨梅花, 王孟谍, 王舒欣, 钱龙, 靳川. 中国北方地区草地生物量分配格局及其调控因素 [J]. 生态学杂志, 2026, 45(6): 1933-1942.
[5]	慕全飞, 王永芳, 郭恩亮, 红英, 马浩文, 周得龙, 王妍力. 科尔沁沙地生态系统服务权衡协同及驱动因子 [J]. 生态学杂志, 2026, 45(6): 2085-2095.
[6]	陈佳渊, 杨浩, 史加勉, 张晗烁, 邱旖婷, 林成芳, 郑勇. 亚热带森林凋落叶分解及其相关真菌群落结构对氮磷添加的响应 [J]. 生态学杂志, 2026, 45(4): 1181-1188.
[7]	王政委, 王凯, 刘畅, 吕林有. 油页岩废渣对紫花苜蓿生长及化学计量的影响 [J]. 生态学杂志, 2025, 44(9): 3026-3035.
[8]	郝颖琦, 王玉英, 吴鹏飞, 任晓, 魏雪, 张雅娴. 青藏高原高寒生态系统土壤呼吸对氮添加的响应: Meta分析 [J]. 生态学杂志, 2025, 44(8): 2476-2486.
[9]	宋佼阳, 赵广兴, 丛孟菲, 张志浩, 曾凡江. 荒漠绿洲过渡带不同土地利用类型下土壤有机碳矿化特征及其对氮添加的响应 [J]. 生态学杂志, 2025, 44(8): 2506-2514.
[10]	卢姣宏, 张秋芳, 曾泉鑫, 彭园珍, 徐敏, 陈琳娜, 陈文伟, 陈岳民. 氮添加对亚热带毛竹化学计量和代谢组分的影响 [J]. 生态学杂志, 2025, 44(8): 2567-2574.
[11]	靳三玲, 曲艳, 韩子晨, 王德平, 戎郁萍. 短期氮沉降对呼伦贝尔辉河流域围封和刈割草地土壤呼吸组分的影响 [J]. 生态学杂志, 2025, 44(7): 2248-2258.
[12]	陈思意, 李军建, 殷雅欣, 单巧博, 郑春芳. 低温胁迫抑制桐花树幼苗光合作用的生理机制 [J]. 生态学杂志, 2025, 44(6): 1866-1873.
[13]	苏娅, 王海娟, 王宏镔. 墨旱莲对镉的富集、耐性和光合响应 [J]. 生态学杂志, 2025, 44(5): 1581-1591.
[14]	王潇, 王艺雄, 季杭翔, 施曼, 王会来, 宋新章, 李全. 毛竹根际土壤磷组分对氮和生物炭添加的响应 [J]. 生态学杂志, 2025, 44(4): 1135-1143.
[15]	高冠女, 唐星林, 吕惠飞, 王灵玲, 周本智. 基于FvCB模型的3种亚热带阔叶树种光合生理生化特性对短期光强变化的响应 [J]. 生态学杂志, 2025, 44(11): 3559-3568.