黄土高原植被恢复对土壤肥力质量的影响研究  

Effect of Plant Restoration to Soil Fertility Quality on Loess Plateau

作　　者：张俊华[1] 常庆瑞[1] 贾科利[1] 陈涛[1] 岳庆玲[1] 李云驹[1] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100

出　　处：《水土保持学报》2003年第4期38-41,共4页Journal of Soil and Water Conservation

基　　金：国家自然科学基金项目(30170790;49941005);国家科技攻关项目(2001BA510B01)

摘　　要：在野外调查分析的基础上,测定了沙棘、黄刺玫、油松以及草地和农田的土壤有机质和速效养分,采用新负极差法检验了有机质含量的差异性,结果表明:(1)黄土高原半湿润地区恢复植被能够显著提高土壤的有机质含量,且草地>沙棘>黄刺玫>油松;(2)植被恢复对土壤有机质的提高效益随深度增加而明显减小,土壤有机质有一定表聚性,草地和灌木林植被下更为显著;(3)不同植被类型土壤速效氮均有大幅度增加,土壤速效磷增幅较小;土壤速效钾在草地、黄刺玫植被下有少量增加,沙棘、油松林地却有所下降。Based on the investigation and analysis in the field, it was measured the soil organic matter and the rapidly available nutrients of young Hippophae rhamnoides,Rosa xanthina Lindl,Pinus tabulaeformis,grassland and farmland,used DUNCAN method to check the difference of organic matter. The results showed that: (1)Plant restoration could increase the content of the soil organic matter remarkably, and the effect was: grassland>Hippophae rhamnoides>Rosa xanthina Lindl>Pinus tabulaeformis; (2) With the deeper of the soil, the benefit that plant restoration the degree of development was decreased obviously, soil organic matter had the feature of gathering on the surface, it was significant in plant of grassland and bush; (3)Soil rapidly available nitrogen had great develop in different plant types; soil rapidly available phosphorus increased slightly; soil rapidly available potash of Hippophae rhamnoides and Pinus tabulaeformis were all droped sharply expect grassland and Rosa xanthina Lindl's were higher than farmland's.

关 键 词：黄土高原 植被恢复 土壤肥力 土壤有机质 土壤速效养分 

分 类 号：S158.3[农业科学—土壤学]