【摘要】 对广西凤山县石漠化不同植被恢复模式的土壤理化性质进行测定分析,结果表明:随着植被的恢复,其石漠化的土壤肥力效应有明显的变化,其土壤容重降低6.1%~16.8%,土壤总孔隙度增加7.5%~14.2%,土壤有机质含量增加21.4%~32.7%,水解氮含量增加32.2%~55.6%,土壤有效磷含量增加77.1%~144.6%,土壤速效钾含量增加15.2%~35.7%,但都随着土层深度的增加而减弱。不同植被恢复模式对土壤肥力效应的影响序列为任豆(Zenia insignis)-构树(Broussonetia papyrifera)模式>任豆纯林模式>香椿(Toona sinensis)-金银花(Lonicera japonica)模式>任豆-山葡萄(Cayratia corniculata)模式。更多还原

【Abstract】 The soil physical-chemical properties were measured and analyzed based on the different vegetation restoration patterns in rocky desertification area of Fengshan County. The results showed that there was remarkable effect on soil fertility characteristics of rocky desertification with the vegetation restoration. Soil bulk density reduced from 6. 1% to 16. 8%. Total porosity increased from 7. 5% to 14. 2%.Soil organic matter content increased from 21. 4% to 32. 7%. Hydrolyzable Nitrogen increased from32. 2% to 55. 6%. Available Phosphorus increased from 77. 1% to 144. 6%. Available Potassium increased from 15. 2% to 35. 7%. Effects decreased with the increase of soil thickness. The order of effects of different vegetation restoration patterns on soil fertility was as follow Zenia insignis-Broussonetia papyrifera > Zenia insignis > Toona sinensis-Lonicera japonica > Zenia insignis-Cayratia corniculata.更多还原