黄土丘陵区不同植被恢复模式土壤养分效应  

Effect of Different Vegetation Restoration Models on Soil Fertility in Zhifanggou Watershed in Gully Region of Loess Region

作　　者：张杨[1,2] 梁爱华[2,3] 王平平[2,3] 杨改河[2,3] 张笑培[4] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100 [2]陕西省循环农业工程技术中心,陕西杨凌712100 [3]西北农林科技大学农学院,陕西杨凌712100 [4]中国农业科学院农田灌溉研究所,河南新乡453003

出　　处：《西北农业学报》2010年第9期114-118,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：国家自然科学基金项目(30971695);国家林业局"948"项目(2006-4-11)

摘　　要：以黄土高原沟壑区纸坊沟流域为例,选择农田(大豆)为对照,分析不同林龄(12、25、30 a)刺槐、油松、苹果、柠条、沙打旺等不同人工植被恢复模式下土壤理化性质、有机质等的特征。结果表明,黄土高原沟壑区纸坊沟流域不同植被恢复模式下,各层土壤有机质、速效氮、速效磷、速效钾含量均随深度增加而递减,且有一定的表聚性,其中刺槐表聚性表现最明显。几种不同植被恢复模式均能够显著提高土壤有机质、速效氮、速效磷、速效钾含量,改善土壤肥力,其中尤以刺槐的效应最为明显。Soil physiochemical properties in the soil under Robinia pseudoacacia,Pinus tabulaeformis,Malus pumila,Caragana korshinskii and Astragalus adsurgens were studied,compared with the soya land by taking Zhifanggou watershed in the gully region of Loess region as an example.The results showed as the follows： soil organic matter,available nitrogen,available phosphorus and available potassium content under the several vegetation restoration models was decreased with soil deep increased,which was more obvious for Robinia pseudoacacia.Several vegetation restoration models all increased remarkably in soil organic matter,available nitrogen,available phosphorus and available potassium content.The effect of Robinia pseudoacacia was the best.

关 键 词：黄土高原 纸坊沟流域 植被恢复模式 土壤肥力 

分 类 号：S158[农业科学—土壤学]