摘要
从土壤微生物 ,土壤持水性、土壤物理、化学性质方面探讨不同类型樟子松人工固沙林土壤质量状况 ,得出针阔混交林比针叶纯林土壤质量高。松杨混交林、松枫混交林下微生物细菌、真菌数量分别比樟子松纯林高 1～ 3倍 ,表层枯枝落叶量比纯林高 8.5 4%～ 10 .0 2 % ,0～ 2 0cm最大持水量提高了 4～ 5个百分点。不同林分类型间土壤容重差异不大 ,混交林有降低趋势 ;养分状况表层有较明显差异 ,但深层土壤中除速效N之外 ,其它各项养分含量差异不明显 。
Soil quality in different types of sand fixation plantations of Pinus sylvestris var.mongolixa was studied in aspects of soil microbe, water holding in soil,soil physiochemical properties.The result Showed that soil quality in forest mixed with coniferous and broadleaved trees is higher than the comiferous pure;Microbe in mixed forest is 1-3times higher than pure Pinus sylvestris var.mongolica;Litters are 8.54%-10.02%higher than the pure;Maxinum moisture capacity in 0-20 cm soil layers raises by 4-5 per cent.Differences in soil volume weight among all the forest types aren't obvious,which has reduction trend in mixed forest;Nutrient in topsoil has obvious difference,but in deeper soil it has no difference except k.
出处
《防护林科技》
2001年第4期15-17,共3页
Protection Forest Science and Technology
基金
辽宁省自然科学基金 ( 0 0 2 0 74 )
关键词
樟子松
人工固沙林
类型
土壤质量
Pinus sylvestris var.mongolica
sand fixation forest
soil quality
