摘要
研究了农业旅游开发对呼伦贝尔沙质土壤草甸草原植被—土壤等生态环境的影响。结果显示:1)农业旅游开发显著降低了植被覆盖度、丰富度指数、均匀度指数和多样性指数(p<0.05),对植被优势度指数没有显著影响(p>0.05);2)农业旅游开发增加了土壤容重和pH,降低了土壤含水量和电导率;3)农业旅游开发显著增加了土壤粗沙(p<0.05),显著降低了土壤粘粉粒(p<0.05),对细沙和极细沙没有显著影响(p>0.05);4)农业旅游开发显著降低了土壤氮素(全氮和碱解氮)和钾素(全钾和有效钾)(p<0.05),而土壤磷素(全磷和有效磷)则不受农业旅游开发的影响(p>0.05),其中土壤钾素(全钾和有效钾)变化幅度较大,对农业旅游开发表现较为敏感;5)相关性分析表明:农业旅游开发下植被属性主要取决于土壤有效养分。
The effect of agriculture tourism development（ATD） on eco-environment of Hulunbuir was investi- gated. The results showed that： 1） ATD significantly reduced the vegetation coverage, richness index, even- ness index and diversity index （p〈0. 05）, but had no significant influence on the dominance index （p 〉0.05） ; 2） ATD increased soil bulk density and pH, reduced soil water content and electrical conductivity; 3） ATD significantly increased coarse sand of soil （p〈0.05）, reduced the silt and clay in soil （p〈0.05）, but had no significant influence on the fine sand in soil （p〉0.05） ; 4） ATD significantly reduced soil nitro- gen （total nitrogen and alkaline hydrolysis nitrogen） and soil potassium （total potassium and available potas- sium） （p〈0.05）, but had no significant influence on soil phosphorus （total phosphorus and available phos phorus） （p〉0.05）, however, soil potassium （total potassium and effective potassium） was more sensitive to the ATD because of its large change range; 5） correlation analysis showed that vegetation properties mainly depended on the soil available nutrients in Hulunbuir prairie.
出处
《水土保持研究》
CSCD
北大核心
2015年第2期290-294,共5页
Research of Soil and Water Conservation
