%0 Journal Article
%T The Influence of Soil Compactibility on Growth Status of Agriophyllum Squarrosum at Mobile Dune<br>流动沙丘土壤紧实度对沙米生长状况的影响
%A CHANG Xue-li
%A CUI Bu-li
%A CHEN Ya-lin
%A GAO Guang-chen
%A <br>常学礼
%A 崔步礼
%A 陈雅琳
%A 高光辰
%J 自然资源学报
%D 2006
%I 
%X Agriophyllum squarrosum(L.) Moq.is a pioneer species during the community succes,sion process on the mobile dune area in the Horqin sandy land.The growth status of A.squarrosum population is significantly different at the different plots of the windward slope of mobile dune.So,for best understanding the adaptive mechanism of A.squarrosum population at mobile dune area,we set up three plots at the windward slope of the mobile dune,located at bottom,middle,and top sides of the mobile dune,respectively.According to field survey and measurement of the above ground biomass(AGB)of A.squarrosum and soil properties represented by soil hardness,soil moisture,and soil organic matter,the influence of the soil properties upon A.squarrosum has been analyzed by employing one,way ANOVA and regression methods in the Horqin sandy land.Results showed that there was significant variation in soil hardness(F2,87=146.843,P<0.001) and AGB(F2,87=324.986,P<0.001) on different plots of the windward slope of mobile dune which is divided in to bottom,middle,and top windward sides.On the contrary,there was un,significant variation for the soil moisture(F2,12=11.349,P=0.002) and the organic matter(F2,12=0.007,P=0.993) in the same sites.Further regression analysis indic,ated that correlation between the soil compactibility and the AGB was negative.The relation existed not only in horizontal scale(different plots) but also in vertical scale(different soil layers).In addition,the impact of the soil compactibility had threshold,there was less correlation while the soil compactibility changed from 0.013kg/m2 to 0.029kg/m2.Obviously,correlative coefficient check illustrated that there was linear regression while the soil compactibility changed from 0.030kg/m2 to 0.113kg/m2.It is very important to understand that the soil compactibility is not an original characteristic of the windward slope of the mobile dune,but it just reflect erosion or buried degree of soil surface indirectly.
%K population of Agriophyllum squarrosum
%K soil compactibility
%K one-way ANOVA
%K mobile dune
%K Horqin sandy land<br>沙米种群
%K 土壤紧实度
%K 单因子方差分析
%K 流动沙丘
%K 科尔沁沙地
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=4DCB9A3AF3395AF0101DE5302EF3C300&aid=A94425D5669705D1&yid=37904DC365DD7266&vid=659D3B06EBF534A7&iid=0B39A22176CE99FB&sid=9CA95D22FC1D537C&eid=5B5B75F4854B8331&journal_id=1000-3037&journal_name=自然资源学报&referenced_num=4&reference_num=15