西北林学院学报2018，Vol.33Issue(2)：1-9,9.DOI:10.3969/j.issn.1001-7461.2018.02.01
乌兰布和沙漠东北缘典型固沙林土壤养分特征研究
Comparative Study on Soil Chemical Properties of Typical Sand-fixing Forests in Ulanbuh Desert
摘要
Abstract
With the method of representative investigation and laboratory analysis,the study on the effects of different sand-fixing forests on soil nutrient characters in Ulanbuh Desert was carried out,soil nutrient characteristics were evaluated.The contents of organic matter,total nitrogen,total potassium,total phosphorus in soil samples were (4.74±3.31),(0.28±0.16),(17.58±7.32),(0.37±0.12)g· kg-1,respectively.The contents of soil available nitrogen,available potassium,available phosphorus were (19.20 ± 7.46),(162.00±177.28),(4.13±2.69)mg· kg-1,respectively.The soil pH was (8.63±0.38).Soil organic matter was in the order of Populus gansuensis forest＞Hippophae rhamnoides forest＞P.alba var.pyramidalis forest＞bare sand.Soil total nitrogen in the highest was P.gansuensis forest,available nitrogen in the highest was H.rhamnoides forest.Total phosphorus and available phosphorus was P.alba var.pyramidalis forest＞ P.gansuensis forest＞H.rhamnoides forest＞bare sand.Soil total potassium in the highest was P.alba var.pyramidalis forest,available potassium in the highest was P.gansuensis forest.With the increase of soil depth,soil organic matter,total nitrogen,available nitrogen,total phosphorus,available phosphorus,total potassium,available potassium declined.The soil nutrient factors exhibited different degrees of correlation.Negative correlationship was found between soil pH of three typical forests and other factors.Positive correlationship was observed the nutrient factors.Based on a comprehensive evaluation of soil fertility,the sand-fixing forests were ranked from most to least fertile as follows:P.gansuensis forest (0.365) ＞P.alba var.pyramidalis forest (0.328)＞ H.rhamnoides forest (0.295)＞bare sand (0.146).关键词
土壤化学性质/固沙林/乌兰布和沙漠Key words
soil chemical property/sand-fixing forest/Ulanbuh Desert分类
农业科技引用本文复制引用
黄雅茹,郝玉光,董礼隆,马迎宾,辛智鸣,徐军..乌兰布和沙漠东北缘典型固沙林土壤养分特征研究[J].西北林学院学报,2018,33(2):1-9,9.基金项目
中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2017MB026). （CAFYBB2017MB026）
