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内蒙古乌兰泡湿地环带状植被区土壤有机质及全氮空间分异规律
引用本文:白军红,邓伟,张玉霞.内蒙古乌兰泡湿地环带状植被区土壤有机质及全氮空间分异规律[J].湖泊科学,2002,14(2):145-151.
作者姓名:白军红  邓伟  张玉霞
作者单位:中国科学院长春地理研究所湿地过程与环境开放实验室,长春,130021
基金项目:中国科学院湿地创新项目“中国典型湿地水陆相互作用过程、资源环境效应与调控 (KZCX - 30 2 )”,湖沼三期项目“松嫩平原霍林河流域沼泽资源环境动态效应与优化管理 (ZKHZ - 0 3- 0 6 )” .联合赞助
摘    要:本文以乌兰泡湿地为研究对象,对该区环带状植被区湿地土壤有机质有全氮的空间分布规律进行了初步研究,结果表明不同植被区养发含量分异趋势一致,但水平分异显著,沿土壤水分梯度变化而变化,表现为蓼区>香蒲区>芦苇区,反映出距泡心越远含量越低的规律;各植被区土壤碳氮比都相对较低(在5-12之间),表层土壤碳氮经值也沿土吉水分梯度变化,表现为芦苇区>香莆区>蓼区;泡沼湿地土壤与草原土壤的碳氮比对水分条件及有机质和全氮的含量的响应差异显著;水分和植被是影响其水平分异的关键因子,而湿地土壤pH值并不是影响土壤有机质及全氮分异的主要因子。

关 键 词:湿地  环带状植被区  土壤  有机质  全氮  空间分异规律
收稿时间:9/5/2001 12:00:00 AM
修稿时间:2001年9月5日

Spatial Distribution of Soil Organic Matter and Nitrogen in Soil of Circular-Zonary Vegetation Areas in Wulanpao Wetland, Inner Mongolia
BAI Junhong,DENG Wei and ZHANG Yuxia.Spatial Distribution of Soil Organic Matter and Nitrogen in Soil of Circular-Zonary Vegetation Areas in Wulanpao Wetland, Inner Mongolia[J].Journal of Lake Science,2002,14(2):145-151.
Authors:BAI Junhong  DENG Wei and ZHANG Yuxia
Institution:Lab for wetland process and environment, Changchun institute of Geography, CAS, Changchun 130021, P.R China,Lab for wetland process and environment, Changchun institute of Geography, CAS, Changchun 130021, P.R China and Lab for wetland process and environment, Changchun institute of Geography, CAS, Changchun 130021, P.R China
Abstract:This paper investigates preliminarily spatial distribution of soil organic matter and nitrogen in wetland soil of circular distribtuion vegetation areas in Wulanpao Wetland, Inner Mongolia, which shows that vertical distribution of nutrients in different vegetation areas are of similar tendency but their horizontal distributions are very different, and they vary along the soil moisture gradient, that is, organic matter and nitrogen content decrease with the increase of distance to waters, Polygonaceae area> Thpya orientalis area> Phragmites cmmunis area. The ratio of carbon to nitrogen(C/N) ranges from 5 to 12, and C/N values also vary with moisture gradient, but variant tendency is opposite to that of SOM and TN content in the order Phragmites cmmunis area > Thpya orientalis area> Polygonaceae area; effects of moisture, soil organic matter and total nitrogen content on C/N values of Wetland soil and grassland soil are significantly different. Moisture and plant are the key factors influencing horizontal distributons of nutrients, but pH is not the one in this region.
Keywords:Circular  zonary vegetation areas  wetland soil  soil organic matter  total nitrogen  Wulanpao wetland
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