WANG Li,ZHANG Yi-li,WANG Zhao-feng,et al.Effects of Grazing and Hydrological Disturbance on Soil Properties of Wet Meadow Wetland in Lhasa[J].Research of Soil and Water Conservation,2013,20(01):66-69.
放牧及水文扰动对拉萨地区湿草甸湿地土壤特征的影响
- Title:
- Effects of Grazing and Hydrological Disturbance on Soil Properties of Wet Meadow Wetland in Lhasa
- Keywords:
- wet meadow; human disturbance; soil properties; wetland; the Tibetan Plateau
- 分类号:
- S153.6
- 摘要:
- 通过定位观测和模拟试验，对不同放牧及水文扰动下湿草甸群落土壤表层土壤pH值、有机质含量、全量及速效氮、磷、钾含量进行了测定分析。结果表明：放牧调节与水文扰动对土壤特征的交叉影响复杂。禁牧加水提高土壤pH值、全氮含量，放牧加水则降低土壤有机质、全量氮磷钾及速效钾的含量；放牧干扰提高土壤速效氮含量及其占全氮的比例，且在放牧加水条件下最高，禁牧加水条件下最低；但放牧干扰降低土壤速效磷含量及其占全磷的比例，而不同放牧条件下，水文条件改善均提高土壤速效磷含量及其占全磷的比例。
- Abstract:
- Surface soil pH, total and available nutrients of wet meadow under different grazing systems and water condition were studied through position experiment and constructed experiment. The results showed that effect of grazing and water regulation on wet meadow soil was complex. Soil pH and total nitrogen content were increased by pasturing prohibition and water improvement, while soil organic matter, total nutrients and available potassium content decreased. Available nitrogen content and its proportion in total nitrogen were improved under grazing condition, which were the highest under grazing and the lowest under pasturing prohibition. Available phosphorus content and its proportion in total phosphorus decreased under grazing condition, and increased under improved water condition.
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备注/Memo
收稿日期:2012-06-04;改回日期:2012-07-20。
基金项目:国家重点基础研究发展计划课题“青藏高原生态与社会经济系统对气候变化的响应与适应研究”（2010CB951704）；国家自然科学基金项目“拉萨地区湿草甸植被对人为扰动的生态响应研究”（41001030）；国家科技支撑计划项目课题“拉萨河流域高原湿地保护与修复技术研究与示范”（2007BAC06B03）
作者简介:王丽(1982-),女,山东临沂人,博士,讲师,主要从事湿地环境生态方向研究。E-mail:erc2009@126.com