Effects of revegetation and precipitation gradient on soil carbon and nitrogen variations in deep profiles on the Loess Plateau of China

被引:79
|
作者
Tuo, Dengfeng [1 ]
Gao, Guangyao [1 ,2 ]
Chang, Ruiying [3 ]
Li, Zongshan [1 ]
Ma, Ying [4 ]
Wang, Shuai [5 ]
Wang, Cong [1 ]
Fu, Bojie [1 ,2 ]
机构
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
[2] Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
[3] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
[4] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
[5] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resources Ecol, Beijing 100875, Peoples R China
基金
中国国家自然科学基金;
关键词
Soil C and N stocks; C and N interaction; Deep layer; Precipitation gradient; Vegetation restoration; LAND-USE CHANGES; ORGANIC-CARBON; CLIMATE-CHANGE; COMMUNITY STRUCTURE; AFFORESTATION; FOREST; DYNAMICS; WATER; SEQUESTRATION; IMPACTS;
D O I
10.1016/j.scitotenv.2018.01.116
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Precipitation is one of the most important factors affecting the variations in soil carbon (C) and nitrogen (N) following revegetation. However, the effects of revegetation and precipitation gradients on soil organic carbon (SOC), total nitrogen (TN) and C-N interactions in deep profiles over large scales are poorly understood. This study measured the SOC and TN stocks to depth of 300 cm in three revegetation types (grassland, shrubland and forestland) and paired cropland stands at seven sites along a precipitation gradient with mean annual precipitation (MAP) from 280 to 540 mm yr(-1) in the Loess Plateau of China. The results showed that the SOC and TN stocks in the 0-300 cm profile increased along the precipitation gradient. Revegetation did not always result in accumulation of SOC and TN stocks, which depended on the precipitation condition and varied among different vegetation types. Grassland restoration resulted in more SOC and TN accumulation than shrubland and forestland in areas with MAP < 510 mm, whereas there were losses in SOC and TN following grass plantation in sites with MAP > 510 mm. The changes in SOC and TN stocks following revegetation (Delta SOC and Delta TN) were significantly correlated with MAP in only the 0-20 cm layer, whereas the changes in the C/N ratio of each depth were significantly and negatively correlated with MAP. The correlations between Delta SOC and Delta TN were stronger in the 0-60 cm layer than that in the 60-300 cm layer, and an accumulation of 1 g TN was associated with approximately 7.9 g increase of SOC in the 0-300 cm profile following revegetation. This study indicated that the changes in soil C and N stocks following revegetation had different patterns along precipitation gradient and among depths, and grassland restoration and N fertilizer input benefitted soil C and N sequestration in drier areas. (c) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码:399 / 411
页数:13
相关论文
共 50 条
  • [31] Revegetation as an efficient means of increasing soil aggregate stability on the Loess Plateau (China)
    An, Shao-Shan
    Darboux, Frederic
    Cheng, Man
    GEODERMA, 2013, 209 : 75 - 85
  • [32] Leaf carbon chemistry effectively manipulated soil microbial profiles and induced metabolic adjustments under different revegetation types in the loess Plateau, China
    Chen, Haoning
    Cheng, Man
    Wen, Yongli
    Xiang, Yun
    JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2024, 359
  • [33] Variations and influencing factors of nitrate accumulation in the deep soil profiles of apple orchards on the Loess Plateau
    Zhu, Xueqiang
    Miao, Peng
    Wang, Peizhou
    Zhang, Saifeng
    Chen, Zhujun
    Zhou, Jianbin
    AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2022, 335
  • [34] More portion of precipitation into soil water storage to maintain higher evapotranspiration induced by revegetation on China's Loess Plateau
    Zhou, Jialiang
    Liu, Qiang
    Liang, Liqiao
    He, Jun
    Yan, Denghua
    Wang, Xuan
    Sun, Tao
    Li, Shuzhen
    JOURNAL OF HYDROLOGY, 2022, 615
  • [35] Effects of two typical revegetation methods on soil moisture in the semi-arid Loess Plateau, China
    Zhao, Qian
    Yang, Lei
    Wang, Xin
    Bi, Runcheng
    Zhang, Qindi
    HYDROLOGY RESEARCH, 2019, 50 (05): : 1453 - 1462
  • [36] Soil physicochemical properties and microorganisms jointly regulate the variations of soil carbon and nitrogen cycles along vegetation restoration on the Loess Plateau, China
    Wang, Anning
    Zhang, Yifan
    Wang, Guilin
    Zhang, Zhiqiang
    PLANT AND SOIL, 2024, 494 (1-2) : 413 - 436
  • [37] Soil physicochemical properties and microorganisms jointly regulate the variations of soil carbon and nitrogen cycles along vegetation restoration on the Loess Plateau, China
    Anning Wang
    Yifan Zhang
    Guilin Wang
    Zhiqiang Zhang
    Plant and Soil, 2024, 494 : 413 - 436
  • [38] Response of soil water to long-term revegetation, topography, and precipitation on the Chinese Loess Plateau
    Chen, Mingyu
    Yang, Xueqin
    Zhang, Xutao
    Bai, Yue
    Shao, Ming 'an
    Wei, Xiaorong
    Jia, Yuhua
    Wang, Yunqiang
    Jia, Xiaoxu
    Zhu, Yuanjun
    Zhang, Qingyin
    Zhu, Xuchao
    Li, Tongchuan
    CATENA, 2024, 236
  • [39] Soil organic carbon and nitrogen sequestration following grazing exclusion on the Loess Plateau, China
    Yuan, Zi-Qiang
    Song, Xin
    Feng, Zhaozhong
    Wang, Jian
    Wang, Runzhi
    Agathokleous, Evgenios
    Fang, Chao
    Sardans, Jordi
    Penuelas, Josep
    CATENA, 2023, 232
  • [40] Changes in Soil Carbon and Nitrogen following Land Abandonment of Farmland on the Loess Plateau, China
    Deng, Lei
    Shangguan, Zhou-Ping
    Sweeney, Sandra
    PLOS ONE, 2013, 8 (08):