The effect of water deficit and livestock stocking density on soil organic carbon stocks in Namibia
The effect of water deficit and livestock stocking density on soil organic carbon stocks in Namibia
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纳米比亚水分亏缺和牲畜饲养密度对土壤有机碳储量的影响
DOI：
10.1016/j.geoderma.2021.115522
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发表时间：
2022
期刊：
影响因子：
6.1
通讯作者：
Mumbi Chabala L
中科院分区：
文献类型：
--
作者：
Mumbi Chabala L
畜牧业综合土地利用系统被认为是在气候变化中加强土壤有机碳(SOC)固存的可行选择。本研究评估了水分亏缺和畜牧密度对土壤碳储量的影响。从纳米比亚Omusati和Otjozondjupa地区Arenosol的缺水和牲畜饲养密度图层中提取了101个匹配数据用于C储存。缺水和牲畜饲养密度地图是从国家数据库中获得的。SOC数据被安排成四个处理组合，分别代表两个水分亏缺水平和两个牲畜饲养密度水平。然后使用线性混合模型(LMM)来评估SOC存量对牲畜饲养密度和水分亏缺的响应差异。结果表明，家畜密度和水分亏缺对C类股票的影响存在显著的交互作用(p = 0.013)。在水分亏缺较小的条件下，越集约放牧，土壤有机碳储量越大。在水分亏缺较大的条件下，非集约化放牧条件下土壤有机碳储量较大。此外，在集约化放牧条件下，水分亏缺较大和较小的土壤有机碳储量差异较大。这表明，必须将气候变化的影响和放牧强度的变化结合起来考虑，以预测对有机碳储量的影响。
Livestock integrated land use systems are considered as viable options for enhancing soil organic carbon (SOC) sequestration in a changing climate. This study assessed the influence of water deficit and livestock stocking density on soil carbon stocks. A total of 101 matching data were extracted from map layers of water deficit and livestock stocking density for C storage in Arenosols of Omusati and Otjozondjupa regions of Namibia. Maps for water deficit and livestock stocking density were obtained from national databases. The SOC data were arranged into four treatment combinations represented by two levels of water deficit and two levels of livestock stocking density. Linear mixed models (LMM) were then used to evaluate differences in SOC stocks in response to livestock stocking density and water deficit. Results showed that there was a significant interaction (p = 0.013) between the effects of livestock stocking density and water deficit on C-stocks. In conditions where the water deficit was small, the SOC stock was larger under more intensive grazing. Whilst in conditions where water deficit was large, the SOC stock was larger under less intensive grazing. Furthermore, the difference between SOC stock at large and small water deficits was larger under more intensive grazing. This shows that the impacts of a changing climate, and changes in the intensity of grazing must be considered together to predict effects on the SOC stock.
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影响因子：
6.1
作者：
Aynekulu, Ermias;Mekuria, Wolde;Shepherd, Keith
通讯作者：
Shepherd, Keith
DOI：
--
发表时间：
2016-12
期刊：
Future of Food: Journal on Food, Agriculture and Society
影响因子：
--
作者：
J. Rowntree;R. Ryals;M. DeLonge;W. Teague;M. Chiavegato;Peter Byck;Tong Wang;Sutie Xu
通讯作者：
J. Rowntree;R. Ryals;M. DeLonge;W. Teague;M. Chiavegato;Peter Byck;Tong Wang;Sutie Xu
季节性干旱热带森林土地利用对土壤碳和氮储量的影响
DOI：
10.3390/agronomy10020158
发表时间：
2020
期刊：
Agronomy
影响因子：
--
作者：
Eunice Maia Andrade;W. Valbrun;A. M. M. D. Almeida;G. Rosa;Antonio Givanilson Rodrigues da Silva
通讯作者：
Antonio Givanilson Rodrigues da Silva
土地退化中和的土壤有机碳基线：纳米比亚奥乔宗朱帕复杂性的地图准确性和成本权衡。
影响因子：
3.9
作者：
R. Nijbroek;K. Piikki;M. Söderström;B. Kempen;K. Turner;S. Hengari;J. Mutua
通讯作者：
J. Mutua
大型食草动物逆转了牛对土壤碳和养分库的负面影响
影响因子：
27.6
作者：
Sitters, Judith;Kimuyu, Duncan M.;Young, Truman P.;Claeys, Philippe;Olde Venterink, Harry
通讯作者：
Olde Venterink, Harry