蔗区小流域泥沙有机碳入河负荷的时空变化特征及其影响因素

吴宗猛; 郭豪; 李勇; 陈婷婷; 周小淇; 杨翠红; 杨江怡; 王旭; 黄智刚

doi:10.13961/j.cnki.stbctb.20230317.001

您当前的位置：

首页 >

文章列表页 >

蔗区小流域泥沙有机碳入河负荷的时空变化特征及其影响因素

试验研究

- 蔗区小流域泥沙有机碳入河负荷的时空变化特征及其影响因素
- Factors Influencing Spatial and Temporal Characteristics of Organic Carbon Loading to Rivers From Sediment in Small Watersheds in Sugarcane Areas
- 水土保持通报 2023年43卷第3期页码：374-381
- 作者机构：
  
  广西大学农学院/广西农业环境与农产品安全重点实验室,广西,南宁,530004
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目“湿热区土壤水蚀面源污染对垦殖强度的响应:中缅泰对比研究”42220104004);广西科技重大专项“甘蔗农机农艺融合规模化生产技术示范”桂科(AA17202005-1);广西自然科学基金重点项目(2018JJD150014)
- DOI：10.13961/j.cnki.stbctb.20230317.001
  中图分类号： S157.1
- 纸质出版：2023
- 稿件说明：
移动端阅览
吴宗猛, 郭豪, 李勇, 等. 蔗区小流域泥沙有机碳入河负荷的时空变化特征及其影响因素[J]. 水土保持通报, 2023,43(3):374-381.

Wu Zongmeng, Guo Hao, Li Yong, et al. Factors Influencing Spatial and Temporal Characteristics of Organic Carbon Loading to Rivers From Sediment in Small Watersheds in Sugarcane Areas[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 374-381.
吴宗猛, 郭豪, 李勇, 等. 蔗区小流域泥沙有机碳入河负荷的时空变化特征及其影响因素[J]. 水土保持通报, 2023,43(3):374-381. DOI： 10.13961/j.cnki.stbctb.20230317.001.

Wu Zongmeng, Guo Hao, Li Yong, et al. Factors Influencing Spatial and Temporal Characteristics of Organic Carbon Loading to Rivers From Sediment in Small Watersheds in Sugarcane Areas[J]. Bulletin of Soiland Water Conservation, 2023, 43(3): 374-381. DOI： 10.13961/j.cnki.stbctb.20230317.001.

摘要

[目的

]

针对广西红壤区典型小流域坡耕地甘蔗土壤有机碳流失问题，探究其流失时空特征和影响因素，解析流域泥沙有机碳在甘蔗不同生长时期入河负荷时空变化，为揭示自然降雨侵蚀下土壤有机碳流失的影响机制提供科学依据。[方法

]

试验区位于广西壮族自治区崇左市扶绥县客兰水库水源区那辣小流域，流域分为下游子流域(S

)和上游子流域(S

，S

)。利用无人机技术和径流泥沙自动监测—采样系统对甘蔗4个生长时期(苗期、分蘖期、伸长期和成熟期)入河泥沙有机碳及植被覆盖度等进行监测，并利用皮尔逊相关分析，确定入河泥沙有机碳与降雨径流、植被覆盖度和施肥等影响因素的关系。[结果

]

①甘蔗苗期的流域泥沙有机碳入河负荷占整个生长期总流失量的61.1%，显著高于其他生长期，其特征为苗期(5.1 kg/hm

)＞成熟期(1.6 kg/hm

)＞伸长期(1.4 kg/hm

)＞分蘖期(0.3 kg/hm

)。②流域降雨径流和植被覆盖度与泥沙有机碳入河负荷呈极显著相关，分别解释了泥沙有机碳入河负荷生长期变化的45%和54%；而流域施肥和土壤容重与泥沙有机碳入河负荷呈显著相关，分别解释了泥沙有机碳入河负荷生长期变化的79%和36%。[结论

]

流域入河泥沙有机碳流失变化主要是由降雨径流、植被覆盖度、施肥和土壤容重所引起。在蔗区小流域，通过增加植被覆盖以减少地表径流的冲刷及调控施肥时间，对降低土壤有机碳流失具有重要作用。

Abstract

[Objective] The spatial and temporal characteristics and influencing factors of soil organic carbon loss from sugarcane in a typical small watershed in the red soil area of Guangxi Zhuang Autonomous Region were determined

and the spatial and temporal changes of organic carbon from watershed sediment entering the river during different growth periods of sugarcane were analyzed in order to identify the factors influencing soil organic carbon loss under natural rainfall erosion.[Methods] The experimental area was located in the Nala sub-basin of the water source area of Kailan Reservoir at Fusui County

Chongzuo City

Guangxi Zhuang Autonomous Region. The watershed was divided into the lower sub-basin (S1) and the upper sub-basins (S2 and S3). The organic carbon of incoming sediment and vegetation cover were monitored during four growth periods (seedling

tillering

elongation

and maturity) of sugarcane using UAV technology and an automatic runoff sediment monitoring-sampling system. Pearson correlation analysis was used to determine the relationship between organic carbon of incoming sediment and influencing factors such as rainfall runoff

vegetation cover

and fertilizer application.[Results] ① The organic carbon load of sediment into the river during the seedling stage of sugarcane accounted for 61.1% of the total loss during the entire growing season

and this value was significantly greater than values observed in the other growing periods. Organic carbon load followed the order of seedling stage (5.1 kg/hm2) > maturity stage (1.6 kg/hm2) > elongation stage (1.4 kg/hm2) > tillering stage (0.3 kg/hm2); ② rainfall runoff and vegetation cover were significantly correlated with organic carbon loss from incoming sediment

explaining 45% and 54%

respectively

of the variation in organic carbon loss from incoming sediment during the growing season. Fertilizer application and soil bulk density were significantly correlated with organic carbon loss from incoming sediment in the watershed

explaining 79% and 36%

respectively

of the variation in organic carbon loss from incoming sediment during the growing season.[Conclusion] Studies have shown that organic carbon loss from watershed sediments is mainly influenced by rainfall runoff

vegetation cover

fertilizer application

and soil bulk density. In small watersheds in sugarcane areas

increasing vegetation cover to reduce surface runoff and regulating the timing of fertilizer application can play an important role in reducing soil organic carbon loss.

关键词

Keywords

references

贾松伟,贺秀斌,陈云明.侵蚀逆境下土壤有机碳的迁移[J].生态环境,2004,13(1):78-80.

Lal R. Soil erosion and the global carbon budget[J]. Environment International,2003,29(4):437-450.

贾松伟,贺秀斌,陈云明,等.黄土丘陵区土壤侵蚀对土壤有机碳流失的影响研究[J].水土保持研究,2004,11(4):88-90.

聂小东,李忠武,王晓燕,等.雨强对红壤坡耕地泥沙流失及有机碳富集的影响规律研究[J].土壤学报,2013,50(5):900-908.

Melillo J M, Steudler P A, Aber J D, et al. Soil warming and carbon-cycle feedbacks to the climate system[J]. Science,2002,298(5601):2173-2176.

Smith S V, Renwick W H, Buddemeier R W, et al. Budgets of soil erosion and deposition for sediments and sedimentary organic carbon across the conterminous United States[J]. Global Biogeochemical Cycles,2001,15(3):697-707.

Lal R. Soil carbon sequestration impacts on global climate change and food security[J]. Science,2004,304(5677):1623-1627.

黄金权,程冬兵,王志刚,等.水力侵蚀作用下土壤有机碳动态研究进展[J].长江科学院院报,2016,33(12):27-32.

IPCC. Climate change 2007:The physical science basis[M]. Cam-bridge, UK:Cambridge University Press, 2007:6-7.

李桂芳,王坚桦,谢福倩,等.降雨与作物种植方式对赤红壤坡面土壤侵蚀特征的影响[J].中国水土保持科学(中英文),2022,20(1):65-73.

王军,魏飒,刘凤婵,等.坡耕地降雨径流与土壤侵蚀特征研究[J].河北农业科学,2021,25(4):88-92.

Li Yong, Are K S, Huang Zhigang, et al. Particulate N and P exports from sugarcane growing watershed are more influenced by surface runoff than fertilization[J]. Agriculture,Ecosystems & Environment,2020,302:107087.

孟祥冬,曾奕,方怒放.地形和土地利用对黄土丘陵沟壑区土壤侵蚀速率的影响[J].水土保持通报,2022,42(5):25-32.

李娜,张哲,白伟,等.耕作方式下坡面土壤侵蚀对有机碳流失的影响[J].东北农业大学学报,2022,53(2):82-90.

Jin K, Cornelis W M, Gabriels D, et al. Residue cover and rainfall intensity effects on runoff soil organic carbon losses[J]. Catena, 2009,78(1):81-86.

王文欣,庄义琳,庄家尧,等.不同降雨强度下坡地覆盖对土壤有机碳流失的影响[J].水土保持学报,2013,27(4):62-66.

刘春.黄土高原丘陵区侵蚀土壤有机碳来源及影响机制[D].湖南长沙:湖南大学,2019.

何彦星.东北黑土区坡耕地土壤碳氮变化对侵蚀强度的响应研究[D].陕西杨凌:西北农林科技大学,2022.

舒德志.广西糖业高质量发展的困境及应对措施[J].广西糖业,2022,42(2):35-38.

莫雅棋.广西集约化蔗区坡面沟蚀时空变化及主控因子分析[D].广西南宁:广西大学,2021.

Li Y, Zhang Q W, Reicosky D C, et al. Changes in soil organic carbon induced by tillage and water erosion on a steep cultivated hillslope in the Chinese Loess Plateau from 1898-1954 and 1954-1998[J]. Journal of Geophysical Research, 2007,112(G1):G01021.

戴谅,王旭,李勇,等.径流与施肥对流域入河重金属污染负荷的控制[J].植物营养与肥料学报,2022,28(3):379-391.

鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000.

沈姣,王小国,马晗.施肥对紫色土农田土壤有机碳损失过程的影响[J].中国生态农业学报(中英文),2021,29(9):1571-1581.

邹润彦.环鄱阳湖区农田土壤有机碳空间变异特征及其影响因素研究[D].江西南昌:江西财经大学,2019.

蒋秋玲.坡面土壤有机碳侵蚀过程与动力学机制[D].北京:北京林业大学,2019.

徐曼,余泺,王富华,等.紫色土旱坡地不同坡位土壤有机碳组分含量对施肥管理的响应[J].环境科学,2021,42(11):5491-5499.

刘殿民,沈海鸥,武佳龙,等.黑土坡面垄侧少耕措施的土壤侵蚀特征分析[J].水土保持学报,2022,36(4):1-6.

马文明.侵蚀作用下南方红壤丘陵区土壤有机碳流失、更新及稳定性特征研究[D].湖南长沙:湖南大学,2016.

张雪,李忠武,申卫平,等.红壤有机碳流失特征及其与泥沙径流流失量的定量关系[J].土壤学报,2012,49(3):465-473.

陆银梅,李忠武,聂小东,等.红壤缓坡地径流与土壤可蚀性对土壤有机碳流失的影响[J].农业工程学报,2015,31(19):135-141.

肖胜生,汤崇军,王凌云,等.自然降雨条件下红壤坡面有机碳的选择性迁移[J].土壤学报,2017,54(4):874-884.

贾莲莲,李占斌,李鹏,等.黄土区野外模拟降雨条件下坡面径流-产沙试验研究[J].水土保持研究,2010,17(1):1-5.

戴金梅,查轩,黄少燕,等.不同植被覆盖度对紫色土坡面侵蚀过程的影响[J].水土保持学报,2017,31(3):33-38.

孙一,刘晓燕,田勇,等.坡面植被覆盖度对泥沙输移的影响特性[J].工程科学与技术,2022,54(5):12-18.

郭凯.不同条件下坡面侵蚀泥沙中有机碳的变化研究[D].陕西杨凌:西北农林科技大学,2022.

浏览量

545

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

降雨与植被对大别山“林改园”区土壤侵蚀的影响

长江三峡花岗岩地区优先流对渗流和地表径流的作用

紫色土丘陵区典型坡地产流及产沙模拟试验研究

南方花岗岩红壤区不同土地利用类型坡地产流与侵蚀产沙研究

重庆市缙云山不同林分对坡面产流的影响