摘要
为了解沙漠地区综合防护体系的生态效益,对库布其沙漠内两种综合防护体系的防风效益及土壤理化性质进行了对比分析,结果表明:芦苇-樟子松-花棒综合防护体系在防风阻沙、改良土壤方面比芦苇-樟子松-沙柳综合防护体系效果好;与裸沙地相比,芦苇-樟子松-花棒综合防护体系的防风效能为46.53%,增加地表粗糙度3.61 cm,使土壤含水率、有机质、碱解氮、速效钾含量分别增加了1.88百分点、0.82 g/kg、4.93 mg/kg、39.32 mg/kg,使土壤容重、pH值分别降低了0.071 g/cm3、0.59。
In order to understand the ecological benefits of comprehensive protective system in desert area,the paper conducted comparative analysis on benefits of windproof and soil physical and chemical properties of two types of comprehensive protection system in Kubuqi desert.The outcomes show that: on the aspects of reducing wind speed and improving soil,Phragmites australis-Pinus sylvestris-Hedysarum scoparium comprehensive protection system is better than the Phragmites australis-Pinus sylvestris-Salix psammophila comprehensive protection system;comparing with the bare sandy land,the reducing wind speed of Phragmites australis-Pinus sylvestris-Hedysarum scoparium comprehensive protection system is 46.53%,increasing surface roughness 3.61 cm,increasing soil moisture content,organic matter,available N and available K content by 1.88%,0.82 g/kg,4.93 mg/kg,39.32 mg/kg respectively and reducing soil bulk density and pH value by 0.071 g/cm3 and 0.59 respectively.
出处
《中国水土保持》
2012年第4期55-57,68,共3页
Soil and Water Conservation in China
基金
国家自然科学基金项目(40961036)
关键词
综合防护体系
防风效益
改良土壤
库布其沙漠
comprehensive protection system
benefits of windproof
soil improvement
Kubuqi deser
