YUAN Jie,CAO Guangchao,ECHONG Yi,et al.Difference and Influencing Factors of Soil Carbon and Nitrogen Contents Under Natural Growth and Human Influence[J].Research of Soil and Water Conservation,2023,30(03):163-172,187.[doi:10.13869/j.cnki.rswc.2023.03.030]
自然生长和人为影响下土壤碳氮含量差异及影响因素
- Title:
- Difference and Influencing Factors of Soil Carbon and Nitrogen Contents Under Natural Growth and Human Influence
- 文章编号:
- 1005-3409(2023)03-0163-10
- Keywords:
- north of Qinghai Lake; soil carbon and nitrogen; differences; influencing factors; dominant factors
- 分类号:
- S157; K903
- 文献标志码:
- A
- 摘要:
- [目的]深入探讨环青海湖区近30年未变动放牧草地和耕地土壤碳氮含量影响因素,以期为该区土地利用优化管理提供参考。[方法]基于有幸在该区找到未变动放牧草地和耕地,采用前期研究工作中的多个指标,利用一元和多元回归模型进一步分析土壤碳氮含量主导因素。[结果]该区草地和耕地土壤理化指标基本以30 cm土层深度为界发生明显变化; 从回归模型中可以看出,由于受到人类活动影响,耕地土壤碳氮含量受土壤理化指标影响较小,而草地土壤作为未扰动土壤,在自然发育背景下土壤碳氮主导因素明显多于耕地。[结论]土地利用变化显著影响了土壤性状,在该区减少土地扰动能有效减缓土地荒漠化进程。
- Abstract:
- [Objective]The factors influencing the soil carbon and nitrogen content of unchanged grazed grassland and cultivated land in the Qinghai Lake area for the past 30 years were thoroughly investigated, with a view to providing reference for optimal land use management in the area. [Methods] Further analysis of the dominant factors of soil carbon and nitrogen contents was carried out by using univariate and multiple regression models. [Results] The soil physicochemical indexes of grassland and cultivated land changed obviously with 30 cm soil depth as the boundary. It can be seen from the regression model that soil carbon and nitrogen contents in cultivated land are less affected by soil physical and chemical indexes due to the influence of human activities, while grassland soil, as an undisturbed soil, has significantly more dominant factors on soil carbon and nitrogen than those of the cultivated land under the natural development background. [Conclusion] Land use change significantly affects soil properties, and reducing land disturbance in the area can effectively slow down the process of land desertification.
参考文献/References:
[1] 张江,袁旻舒,张婧,等.近30年来青藏高原高寒草地NDVI动态变化对自然及人为因子的响应[J].生态学报,2020,40(18):6269-6281.
[2] 袁杰,曹广超,虞敏,等.青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义[J].水土保持研究,2016,23(5):199-204.
[3] 常学尚,常国乔.干旱半干旱区土壤水分研究进展[J].中国沙漠,2021,41(1):156-163.
[4] 方精云,于贵瑞,任小波,等.中国陆地生态系统固碳效应:中国科学院战略性先导科技专项“应对气候变化的碳收支认证及相关问题”之生态系统固碳任务群研究进展[J].中国科学院院刊,2015,30(6):848-857,875.
[5] 刘光旭,王小军,相爱存,等.赣江中上游地区土地利用变化空间分异与驱动因素[J].应用生态学报,2021,32(7):2545-2554.
[6] 袁杰,鄂崇毅,曹广超,等.30 a耕作对高寒草地土壤碳氮与颗粒组成的影响[J].干旱区研究,2017,34(3):487-494.
[7] 袁杰,曹广超,鄂崇毅,等.青海湖区域不同土地利用方式下土壤理化特征研究:以刚察县为例[J].干旱地区农业研究,2018,36(3):279-285.
[8] 袁杰,曹广超,鄂崇毅,等.30年放牧草地和耕作农地土壤矿物、颗粒组成及磁性特征比较[J].土壤通报,2019,50(2):253-259.
[9] 马扶林,李全平,高贵生.2018年青海湖东北岸气象因素影响下的草地土壤水分及植被特征响应[J].草原与草业,2019,31(3):32-37.
[10] 颜送宝,王丽云,邹璐,等.青藏高原草地不同利用方式下土壤碳氮与土壤性状的关系[J].生态科学,2019,38(2):105-111.
[11] 石培宏,杨太保,田庆春,等.靖远黄土—古土壤色度变化特征分析及古气候意义[J].兰州大学学报:自然科学版,2012,48(2):15-23.
[12] 陈杰,杨太保,曾彪,等.中国帕米尔地区黄土上部色度变化特征及古气候意义[J].沉积学报,2018,36(2):333-342.
[13] 卢演俦,刘高魁,彭文世.黄土中(微斜长石)/(石英)、(方解石)/(石英)及其古环境的意义[J].地球化学,1982,11(2):198-204.
相似文献/References:
[1]袁杰,曹广超,虞敏,等.青海湖北部近30年不变草地与不变耕地土壤粒度差异及其指示意义[J].水土保持研究,2016,23(05):199.
YUAN Jie,CAO Guangchao,YU Min,et al.Difference of Soil Particle Size Between Unchanged Perennial Farmland and Permanent Grassland and Its Implications During Nearly 30 Years on the North of Qinghai Lake[J].Research of Soil and Water Conservation,2016,23(03):199.
备注/Memo
收稿日期:2021-11-23 修回日期:2022-05-11
资助项目:青海省科技厅自然科学资助项目(2021-ZJ-937Q); 青海省“高端创新人才千人计划"(青人才字[2019]06号); 祁连山国家公园青海研究中心开放课题(GKQ2019-1); 本科生科技创新项目(qhnuxskj2021049); 青海师范大学校青年基金(17101040024)
第一作者:袁杰(1989—),男,青海西宁人,博士,副教授,研究方向:地表环境过程。E-mail:yuanjie8903@126.com
通信作者:曹广超(1971—),男,山东苍山人,教授,博士生导师,研究方向:GIS应用、地表环境过程。E-mail:caoguangchao@qhnu.edu.cn