武功山山地草甸土壤碱解氮含量分布状况研究

【作者】 袁知洋； 邓邦良； 李志； 郭晓敏；

【Author】 Yuan zhi-yang;Deng bang-liang;Li Zhi;Guo xiao-min;College of Landscape Architecture and Art,Jiangxi Agricultural University;

【机构】 江西农业大学园林与艺术学院；

【摘要】 为了研究海拔的变化与草甸退化程度对武功山草甸土壤碱解氮的影响,了解武功山草甸土碱解氮的分布情况,本研究以武功山核心景区金顶海拔1600m-1900m之间的不同海拔与不同退化强度草甸土壤为研究对象,对其A(0~20cm)、B(20~40cm)两层土壤碱解氮进行测定,分析武功山碱解氮空间分布特征.研究结果表明:(1)武功山草甸A、B两层土壤碱解氮含量在同一海拔有明显的垂直空间分布特征;下层土碱解氮含量明显小于上层土壤,在重度退化的情况下这一特征表现不显著。(2)海拔高度的变化对武功山草甸土壤碱解氮含量的影响不显著,海拔1750m左右上下层碱解氮含量均最多。(3)草甸的退化强度对武功山草甸碱解氮含量的影响也为不显著:说明武功山退化草甸土壤的供氮水平无较大缺失,在生态修复工作中,利用氮肥或其他肥料调节土壤肥力需要谨慎合理.更多还原

【Abstract】 To study the change of altitude and meadow degradation degree of Wugong mountain meadow soil alkaline hydrolysis n.To understand the distribution of Wugong mountain meadow soil alkaline hydrolysis n.In this study martial arts core scenic mountain Jinding at an altitude of 1600 m- 1900 m between the different altitude and different intensity of degraded meadow soil as the research object,On the(0 ~ 20 cm) and B(20 ~ 40cm) two layers were determined.Analysis of Wugong mountain alkali-hydro nitrogen spatial distribution characteristics.The study shows that:(1) Wugong mountain A,B two layer soil alkali-hydrolysable nitrogen content at the same elevation has obvious vertical space distribution characteristics,Subsoil alkaline hydrolysis nitrogen content is much smaller than the upper soil > In the case of severe degradation of the characteristics of the performance was not significant(2)The change of altitude of Wugong mountain meadow soil alkali-hydrolysable nitrogen content was not significant,At an altitude of 1750 m or so on the lower alkali solution nitrogen content are the most.(3)Meadow degradation intensity of Wugong mountain meadow alkaline hydrolysis nitrogen effects are not significant,Account for degradation of Wugong mountain meadow soil nitrogen levels without a larger loss,In the ecological restoration,The use of nitrogen fertilizer or other fertilizer need careful reasonable regulating soil fertility.更多还原