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当前位置: 首页 > 文章 > 云南热区西南桦人工纯林林地土壤的有机碳含量研究 西部林业科学 2007,36 (1) 57-60
Position: Home > Articles > A Study on Soil Organic Carbon Content Change of Betula alnoides Plantation in Hot Areas of Yunnan Province Journal of West China Forestry Science 2007,36 (1) 57-60

云南热区西南桦人工纯林林地土壤的有机碳含量研究

作  者：
倪金碧;王卫斌;田昆;宋洪涛;梁妮
单  位：
云南省林业科学院;西南林学院
关键词：
云南热区;西南桦人工纯林;林地土壤;有机碳含量
摘  要：
在云南西双版纳的普文试验林场,通过对不同龄期西南桦人工纯林林地土壤有机碳含量的比较,并以当地的山地雨林、林龄较为接近的西南桦次生林和黄水(黄牛水+水锦树)次生林林地的土壤有机碳含量为参照,作了对比分析;还对西南桦人工纯林林地土壤的有机碳含量与其土壤肥力状况及物理性状的相关性进行了研究。结果表明:西南桦人工纯林随着林龄的增长,其林地土壤有机碳含量呈现出先维持再积累上升的趋势;15年生的西南桦人工纯林林地土壤的有机碳含量水平与黄水(黄牛水+水锦树)次生林相近,随其林龄的增长,预计会超过黄水(黄牛水+水锦树)次生林而接近于山地雨林。西南桦人工纯林林地土壤有机碳含量与其土壤全N、水解N、速效K含量、总孔隙度和毛管孔隙度等指标呈显著正相关,与土壤容重呈显著负相关,因此,西南桦人工纯林林地土壤的有机碳水平可用以指示其土壤的肥力状况。
译  名：
A Study on Soil Organic Carbon Content Change of Betula alnoides Plantation in Hot Areas of Yunnan Province
作  者：
NI Jin-bi1,WANG Wei-bin2,TIAN Kun1,SONG Hong-tao1,LIANG Ni1(1.Southwest Forestry College,Kunming Yunnan 650224,P.R.China;2.Yunnan Academy of Forestry,Kunming Yunnan 650204,P.R.China)
关键词：
hot areas of Yunnan province;Betula alnoides plantation;forest soil;organic carbon content
摘  要：
Taking the mountainous rain forest,secondary Betula alnoides forests with similar age and secondary broadleaved forests as control,the correlation between soil organic carbon content and soil fertility of Betula alnoides plantations located at Puwen experimental forest farm of Xishuangbanna was studied.The results indicated that as the increasing of plantation age,the content of organic carbon showed the tendency of maintaining and then increasing.The organic carbon level of 15 years plantation was near to that of broadleaved forest,as the increasing of forest age,it was estimated that the content would exceed broadleaved forest and near to mountainous rain forest.The soil organic matter content of Betula alnoides plantation was significantly positive correlated with total N,hydrolytic N,available K,soil total porosity and soil capillary porosity,and was negatively correlated with soil bulk density.It was therefore concluded that the soil organic carbon level of Betula alnoides plantation could indicate the soil fertility.

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