Response of soil properties to yak grazing intensity in a Kobresia parva-meadow on the Qinghai-Tibetan Plateau, China
Response of soil properties to yak grazing intensity in a Kobresia parva-meadow on the Qinghai-Tibetan Plateau, China
复制标题
青藏高原小嵩草草甸土壤性质对牦牛放牧强度的响应
DOI：
10.4067/s0718-95162012005000014
复制
发表时间：
2012-01-01
影响因子：
3.9
通讯作者：
Sheng, L
中科院分区：
文献类型：
--
作者：
Dong, Q.M;Zhao, X.Q;Sheng, L
放牧强度是影响草地生态系统土壤性质变化的重要因素之一。本研究旨在研究青藏高原小嵩草草甸中国在不同放牧强度下的土壤性质特征。结果表明，随着放牧强度的增加，土壤有机质(SOM)、有机碳(SOC)、全氮(N)、全钾(K)、速效钾(K)显著降低，C/N比值也呈现出类似的规律。而暖季牧草(WSP)和冷季牧草(CSP)之间差异不显著。此外，结果表明，在小嵩草高寒草甸放牧生态系统中，土壤P是一个限制因子，N对放牧强度非常敏感。因此，我们的研究表明，在青藏高原被研究的小嵩草草甸，土壤碳、氮等土壤性质普遍随着放牧强度的增加而下降。
Grazing intensity is one of the most important factors influencing soil properties variations in rangeland ecosystem. This research aimed to study the features of soil properties under different grazing intensity in a Kobresia parva-meadow on the Qinghai-Tibetan Plateau, China. Results showed that soil organic matter (SOM), soil organic carbon (SOC), and total nitrogen (N) significantly decreased with an increase grazing intensity and total and available potassium (K), and C/N ratio exhibited a similar pattern. However, there were not significant differences between warm-season pasture (WSP) and cool-season pasture (CSP). In addition, results indicated that soil P was a limited factor, and N was sensitive to grazing intensity in Kobresia parva alpine meadow grazing ecosystem. Therefore, our study demonstrated that soil properties, such as soil carbon and nitrogen, generally decreased with the increasing of grazing intensity in studied Kobresia parva-meadow on the Qinghai-Tibetan Plateau.