植被重建对沙地采伐迹地土壤肥力的作用研究  

Effects of vegetation restoration on soil fertility of cutting-blank sand

作　　者：王婷[1] 吕刚[1] 王道涵[1] 王凯[1] 彭舒[1] 

机构地区：[1]辽宁工程技术大学环境科学与工程学院,辽宁阜新123000

出　　处：《广东农业科学》2016年第10期77-81,共5页Guangdong Agricultural Sciences

基　　金：国家自然科学基金(31400613)

摘　　要：以植被重建后的科尔沁沙地为研究对象,采用野外采样与实验室检测分析相结合的方法,对其南缘樟子松固沙林采伐迹地上的更新树种林下土壤特性演变特征进行研究,运用模糊综合评判法,选用7项评价指标对植被重建后土壤肥力特征进行综合评价。结果表明,植被重建后,土壤肥力各指标均有所提高,其中五角枫林地有机质、全氮、速效钾增幅最大,红刺榆林地碱解氮、全钾增幅最大,彰武松、樟子松林地全磷、有效磷增幅最大;4种植被重建类型对土壤肥力的综合改良效果为五角枫(0.8735)>彰武松(0.6494)>红刺榆(0.5618)>樟子松(0.4814),该评价结果可为当地植被恢复提供一定参考。Horqin sandy land after vegetation restoration was selected as the research object,by using the field sampling investigation and laboratory testing method,the evolution characteristics of soil properties under the regeneration trees,which located in the Pinus sylvestris var.Mongolica forest of the south edge of Horqin sandy land,were studied.According to the fuzzy comprehensive evaluation,the soil organic matter,total nitrogen,total phosphor,total potassium,alkaline nitrogen,available phosphorus and available potassium were select to evaluate the soil fertility quality after vegetation restoration.The results showed that all the soil fertility indexes improved after vegetation restoration.The increment in soil organic matter,total nitrogen and available potassium of Acer mono,the increment in alkaline nitrogen and total potassium of Hemiptelea davidii and the increment in total soil phosphor,available phosphorus of P.densiflora and P.sylvestris was the maximum.The effect of comprehensive improvement of soil fertility for 4 types of vegetation restoration was in the order of A.mono （0.8735） P.densiflora （0.6494） H.davidii （0.5618） P.sylvestris （0.4814）.This result will provide scientific basis for the local ecological restoration.

关 键 词：樟子松固沙林 采伐迹地 植被重建 评价指标 土壤肥力质量 

分 类 号：S158.3[农业科学—土壤学]