文献类型：期刊文献

中文题名：人工低产林改造对生态恢复区土壤理化性质的影响

英文题名：Effect of Alteration of Artificial Low-yield Forest on Soil Physical and Chemical Properties of Ecological Restoration Area

作者：禹娟红[1]

第一作者：禹娟红

机构：[1]定西师范高等专科学校生化系,甘肃定西743000

第一机构：甘肃中医药大学定西校区

年份：2013

卷号：42

期号：6

起止页码：64

中文期刊名：河南农业科学

外文期刊名：Journal of Henan Agricultural Sciences

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2013_2014】；

基金：甘肃省教育厅第二批科研项目(1127B-03)

语种：中文

中文关键词：森林土壤学;华家岭;生态恢复区;人工低产林;土壤理化性质

外文关键词：pedology; Huajialing; ecological restoration area; artificial low-yield forest; soil physical and chemical properties

摘要：为了解人工低产林改造对土壤理化性质的影响,于2010年9月-2011年8月对甘肃定西华家岭生态恢复区4个人工低产林改造后的混交林和1个杨树纯林、1个荒草坡对照点的土壤主要理化性质进行了研究。结果表明,杨树纯林的土壤有机质、总N和总P含量均处于较低水平,分别低于荒草坡10.98、0.78、0.10g/kg;低产林改造后,土壤含水量、有机质和总N含量均有所升高,且随着改造时间的延长呈现出明显的增加趋势。改造8、18、25、31a的混交林土壤含水量分别高出杨树纯林2.01、7.79、11.38、12.07个百分点,有机质含量分别高出2.96、15.23、20.80、24.96g/kg,总N含量分别高出0.41、1.02、1.48、1.96g/kg;总P含量在改造初期有所增加,后期维持稳定,改造8、18、25a的混交林总P含量分别高出杨树纯林0.02、0.06、0.10g/kg,改造31a和25a的混交林总P含量相等;低产林改造后土壤pH值略有降低。结果显示,人工低产林改造大大改善了该区土壤环境质量,有利于该区生态环境的恢复重建。
To obtain a better understanding of the effect of alteration of artificial low-yield forest on soil physical and chemical properties,a study of the primary soil physical and chemical properties（water content,pH value,organic matter,total nitrogen and total phosphorus） across four sampling sites of mixed forest after alteration,a sampling site of poplar pure forest and a contrast sampling site of wild grassland was undertaken in Huajialing,Dingxi,Gansu from September,2010 to August,2011.Results showed that organic matter,total nitrogen and total phosphorus of soil in the sampling site of poplar pure forest were lowest,which were 10.98,0.78 and 0.10 g/kg lower than those in the contrast sampling site of wild grassland respectively.The water content,pH value,organic matter,total nitrogen and total phosphorus of soil had obviously changed after the alteration of low-yield forest,and the water content,organic matter and total nitrogen of soil increased and showed an upward trend with the alteration years.The water content of soil in the sampling sites of 8 a mixed forest,18 a mixed forest,25 a mixed forest,31 a mixed forest was 2.01,7.79,11.38 and 12.07 percentage points higher than that in the sampling site of poplar pure forest respectively,the organic matter of soil in the sampling sites of 8 a mixed forest,18 a mixed forest,25 a mixed forest,31 a mixed forest was 2.96,15.23,20.80 and 24.96 g/kg higher than that in the sampling site of poplar pure forest respectively,the total nitrogen of soil in the sampling sites of 8 a mixed forest,18 a mixed forest,25 a mixed forest,31 a mixed forest was 0.41,1.02,1.48 and 1.96 g/kg higher than that in the sampling site of poplar pure forest respectively.The total phosphorus of soil increased in the earlier period of alteration,but was stable in thelater.The total phosphorus of soil in the sampling sites of 8 a mixed forest,18 a mixed forest,25 a mixed forest was 0.02,0.06 and 0.10 g/kg higher than that in the sampling site of poplar pure forest respectively,and it was equal in the sampling sites of 31 a and 25 a mixed forest.Whereas the pH value of soil decreased slightly after alteration.This study showed that alteration of artificial low-yield forest improved the soil environment quality of ecological restoration area in Huajialing,Dingxi,Gansu.