摘要
通过对红壤坡地不同土地利用方式土壤肥力及土地生物生产力的空间分异研究，揭示了土壤侵蚀对土壤肥力和土地生产力的负面影响．即侵蚀导致Ｎ、Ｐ、Ｋ等土壤速效养分含量减少及其在坡面上部的相对贫乏和下部的相对富集；土壤有机质含量降低；土壤机械组成中砂、粉、粘粒比率发生变化，表现为土壤沙化，土地生物生产力下降．
Studies on the spatial differentiation of soil fertility and land productivity of red soil slope fields
under different land use patterns revealed that soil erosion had negative effects on soil fertility
and land biological productivity,which mainly manifested in the decreasing contents of soil
available N, P, K. and their relative poor on the top and rich at the bottom of the slope, the
reduced soil organic matter content, the soil sandification, and the resultant reduction of land
biological productivity.
出处
《应用生态学报》
CAS
CSCD
1999年第2期175-178,共4页
Chinese Journal of Applied Ecology
基金
FAO/UNDP亚太区域资助项目
关键词
红壤坡地
土壤肥力
生物生产力
土壤侵蚀
Red soil slope field, Soil fertility, Land productivity, Spatial
differentiation, Soil erosion.
