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当前位置: 首页 > 文章 > 元阳梯田景区森林土壤养分的分布特征 西部林业科学 2018 (6) 112-120
Position: Home > Articles > Distribution Characteristics of Forest Soil Nutrients in Yuanyang Terrace Journal of West China Forestry Science 2018 (6) 112-120

元阳梯田景区森林土壤养分的分布特征

作  者：
李晓华;田原润;何永美;郭先华;苏友波;胡怡悦;张建育
单  位：
云南农业大学;中国科学院 南京土壤研究所土壤与农业可持续发展国家重点实验室
关键词：
元阳梯田;土壤养分;分布特征;空间变异性
摘  要：
以元阳梯田核心景区坝达、小水井两个区域的森林系统为研究对象,测定土壤各养分含量,分析不同植被类型下土壤各养分的分布特征及空间变异性,对坝达、小水井两个区域的森林土壤p H值、有机碳、氮素、磷素及钾素的含量进行了研究。结果表明,(1)研究区内的森林土壤p H值为4. 61-5. 21,为酸性土壤;(2)土壤有机碳和全氮的含量较高,分别为32. 34-66. 44g/kg和1. 69-4. 63g/kg,处于含量丰富水平;土壤磷元素含量较低,全磷含量为0. 43-1. 64g/kg,速效磷含量介于1. 55-6. 13mg/kg,处于含量缺乏水平;土壤钾元素含量最低,全钾含量为5. 06-21. 06g/kg,速效钾含量介于23. 81-91. 57mg/kg,处于含量贫乏水平;(3)研究表明,坝达和小水井两区的土壤养分变异系数在15%-60%之间,7个养分指标的变异系数都属于中等强度变异性。
译  名：
Distribution Characteristics of Forest Soil Nutrients in Yuanyang Terrace
作  者：
LI Xiao-hua;TIAN Yuan-run;HE Yong-mei;GUO Xian-hua;SU You-bo;HU Yi-yue;ZHANG Jian-yu;Yunnan Agricultural University;State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science,Chinese Academy of Sciences;
单  位：
LI Xiao-hua%TIAN Yuan-run%HE Yong-mei%GUO Xian-hua%SU You-bo%HU Yi-yue%ZHANG Jian-yu%Yunnan Agricultural University%State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science,Chinese Academy of Sciences
关键词：
Yuanyang terrace;;soil nutrients;;distribution characteristics;;spatial variability
摘  要：
In this study,the forest system in the two areas of the Bada and Xiao shuijing in the core area of Yuanyang terrace was used as the object to study the characteristics of soil nutrient contents,and the distribution and spatial variability of soil nutrients under different forest types were analyzed. The soil p H,organic carbon,total nitrogen,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium,and available potassium were measured in the two areas. The results showed that:( 1) The p H of the soil in the study area was 4. 50 to5. 14,which was acidic;( 2) The content of soil organic carbon and total nitrogen was high,32. 34-66. 44 g/kg and1. 69-4. 63 g/kg,respectively,at rich levels; soil phosphorus content was low,total phosphorus content was 0. 43-1. 64 g/kg,and available phosphorus content was between 1. 55-6. 13 mg/kg,in the level of lack of content; the lowest content of potassium in soil,the total potassium content was 5. 06-21. 06 g/kg and the available potassium content was between 23. 81-91. 57 mg/kg,in the level of poor content;( 3) The coefficient of variation of soil nutrients in the two areas was between 15% and 60%. The coefficient of variation of the seven nutrient indicators all belong to moderate intensity variability.

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