旅游干扰对河南嵩山风景区不同海拔梯度土壤性质的影响Impacts of tourism disturbance on soil properties at different elevations in Songshan scenic area
段亚芳,郭慧香,张利敏,董爱华
摘要(Abstract):
研究了河南嵩山风景区不同海拔旅游干扰(LD,低度旅游干扰;MD,中度旅游干扰;HD,重度旅游干扰)对土壤性质的影响。结果表明,不同海拔旅游干扰对土壤理化性质、养分和酶活性具有较大的影响,山底、山腰和山顶土壤理化性质、养分和酶活性随旅游干扰强度的变化表现出一致的规律性;旅游干扰增加了土壤容重和电导率,降低了土壤总孔隙度、含水量和pH值;旅游干扰降低了土壤碳素(总碳和有机碳)和氮素(全氮和碱解氮),增加了土壤钾素(全钾和有效钾),而土壤磷素(全磷和有效磷)则不受旅游干扰的影响,其中土壤钾素变化幅度较大,对旅游干扰表现最为敏感;随着旅游干扰强度的增加,土壤蔗糖酶、脱氢酶、脲酶和碱性磷酸酶活性均明显降低,与对照达到显著差异水平(P<0.05),但轻度旅游干扰对土壤脱氢酶影响并不大(P>0.05);综合比较可知,土壤受旅游干扰影响范围可达游径外80 m左右(LD),以30 m内最为显著(HD)。相关性分析表明,土壤养分及酶活性与温度和水分具有显著或极显著的正相关性,与p H值和容重具有显著或极显著的负相关性,说明了在旅游干扰条件下,土壤中温度和水分对土壤养分及酶活性具有正相关的依赖性,pH值和容重对土壤养分及酶活性具有负相关的依赖性。
关键词(KeyWords): 旅游干扰;嵩山风景区;海拔梯度;土壤性质
基金项目(Foundation): 河南省软科学研究计划项目(142400410392)
作者(Author): 段亚芳,郭慧香,张利敏,董爱华
DOI: 10.16445/j.cnki.1000-2340.2016.01.018
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