Climate Change Data Portal
DOI | 10.1080/15324982.2019.1659446 |
Responses of soil organic carbon and nitrogen to land-use changes in a semiarid region of northwest China | |
Tian, Haifeng1,2; Shen, Xinlei1,3; Qiu, Liping1,4; Wei, Xiaorong1,4; Zhang, Yanjiang4; Liu, Jian4; Gao, Hailong4; Cheng, Jimin4 | |
发表日期 | 2019 |
ISSN | 1532-4982 |
EISSN | 1532-4990 |
英文摘要 | Currently, we lack a clear understanding of how climate influences the responses of soil organic carbon (OC) and nitrogen (N) to land-use changes in semiarid regions. Thus, to clarify the mechanisms involved, we measured the soil OC and total N (TN) concentrations and stocks in the 0-100 cm soil layer in adjacent grassland, farmland, and woodland at five sites on the Loess Plateau in China, which varied in terms of the mean annual precipitation (MAP) and mean annual temperature (MAT). The farmland or woodland was converted from grassland at each site. Conversion of grassland to farmland significantly reduced the soil OC and TN, with greater decreases in sites with relatively lower MAP and MAT (-0.60 Mg OC ha(-1 )yr(-1) and -0.22 Mg TN ha(-1 )yr(-1), respectively) than sites with relatively higher MAP and MAT (-0.35 Mg OC ha(-1 )yr(-1) and -0.04 Mg TN ha(-1 )yr(-1)). Conversion of grassland to woodland increased OC and TN at sites with higher MAP and MAT, but decreased them at sites with lower MAP and MAT. OC and TN increased to a depth of 100 cm with MAP and MAT after this land-use change. OC and TN decreased at relatively drier and colder sites, but increased at relatively wetter and warmer sites. These findings provide insights into the effects of land-use changes on the soil OC and TN under different climate conditions, thereby facilitating the sustainable management of grasslands in semiarid regions. |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
来源期刊 | ARID LAND RESEARCH AND MANAGEMENT
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/102760 |
作者单位 | 1.Chinese Acad Sci & Minist Water Esources, Inst Soil & Water Conversat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China; 3.Luohe City Soil & Fertilizer Stn, Luohe, Peoples R China; 4.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Tian, Haifeng,Shen, Xinlei,Qiu, Liping,et al. Responses of soil organic carbon and nitrogen to land-use changes in a semiarid region of northwest China[J],2019. |
APA | Tian, Haifeng.,Shen, Xinlei.,Qiu, Liping.,Wei, Xiaorong.,Zhang, Yanjiang.,...&Cheng, Jimin.(2019).Responses of soil organic carbon and nitrogen to land-use changes in a semiarid region of northwest China.ARID LAND RESEARCH AND MANAGEMENT. |
MLA | Tian, Haifeng,et al."Responses of soil organic carbon and nitrogen to land-use changes in a semiarid region of northwest China".ARID LAND RESEARCH AND MANAGEMENT (2019). |
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