【摘要】 通过对在树苗基部覆盖生态垫与未覆盖生态垫的土壤进行比较,研究生态垫对北京市通州区造林地土壤水分、土壤养分的影响。结果表明:(1)铺设生态垫后,在0～20cm、20～40cm土层全年土壤含水量分别平均提高了25.3%、15.1%。一年四个季节中,0～20cm层土壤水分含量为28.1%(冬季)>25.1%(夏季)>13.9%(春季)>12.1%(秋季),20～40cm层土壤含水量为32.1%(冬季)>30.5%(夏季)>19.9%(秋季)>17.6%(春季)。尤其在冬季和春季,生态垫对土壤水分含量影响显著;(2)铺设生态垫后,土壤有机质含量有增加的趋势,土壤全氮和速效磷含量有减少趋势,但差异不显著。生态垫对土壤速效钾含量影响显著,在四个季节都有提高。更多还原

【Abstract】 Effects of ecomat on soil water and nutrients of woodland in Tongzhou district, Beijing city were investigated by comparing the soil with ecomat with that without ecomat. The investigation yielded the following results: 1. in 0～20cm and 20～40cm soil layers, the annual water content was increased respectively by 25.3% and 15.1% on the average. In 0～20cm soil layer, the soil water content was 28.1%(winter)> 25.1%(summer)>13.9%(spring)> 12.1%(fall); in 20～40cm soil layer, the soil water content was 32.1%(winter)> 30.5% (summer)> 19.9%(fall)> 17.6%(spring). The effects of ecomat on soil water content and nutrients of woodland were more remarkable in winter and spring than in the other two seasons. 2. Soil organic matter tended to increase, but nitrogen appeared to decease. Ecomat exerted a significant effect on available potassium in four seasons.更多还原