[1]张宏,黄懿梅,安韶山,等.黄土高原森林带植被群落下土壤活性有机碳研究[J].水土保持研究,2013,20(03):65-70,77.
　ZHANG Hong,HUANG Yi-mei,AN Shao-shan,et al.Soil Active Organic Carbon with Different Plant Communities on the Loess Plateau[J].Research of Soil and Water Conservation,2013,20(03):65-70,77.
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黄土高原森林带植被群落下土壤活性有机碳研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年03期 页码: 65-70,77 栏目: 出版日期: 2013-06-28
Title:
Soil Active Organic Carbon with Different Plant Communities on the Loess Plateau
作者:
张宏1, 黄懿梅1, 安韶山2, 邢肖毅1
1. 西北农林科技大学 资源环境学院 农业部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100;
2. 西北农林科技大学 水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100
Author(s):
ZHANG Hong1, HUANG Yi-mei1, AN Shao-shan2, XING Xiao-yi1
1. Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Resource and Environmental Science, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
关键词:
黄土高原; 植被群落; 优势植物; 活性有机碳
Keywords:
the Loess Plateau; vegetation community; dominant plant; active organic carbon
分类号:
S153.6+2
摘要:
为了探讨植被类型对土壤活性有机碳的影响以及活性有机碳对植被类型的敏感程度，在黄土高原沟壑区安塞县洞子沟流域，选择森林带不同植被类型下0—10 cm和10—20 cm土壤为研究对象，测定了四种表征土壤活性有机碳的指标，并对活性有机碳与植被群落中优势植物的特征指标进行逐步回归分析。结果表明，土壤有机碳以及活性有机碳含量均随土层深度的增加而降低，且含量都以乔灌草群落最大，草本群落最小。微生物生物量碳和溶解性有机碳占有机碳的比例不随植被类型和土层深度的变化而变化，保持在一个比较稳定的水平上。易氧化有机碳和轻组有机碳占有机碳的比例则随不同植被而变化。轻组有机碳占有机碳的比例在上下两层也有明显差异。活性有机碳对优势植物生物量和碳含量的响应，均敏感于总有机碳。而在四种活性有机碳中，微生物生物量碳的响应最为敏感，其次分别为溶解性有机碳，易氧化有机碳，轻组有机碳。
Abstract:
In order to discuss the effects of vegetation type on soil active organic carbon and analyze sensitive degree of active organic carbon to vegetation type. Four indicators regarded as representations of soil active organic carbon were analyzed. In the Dongzigou Basin, Ansai of hilly and gully region of the Loess Plateau, soil samples were collected under different forest vegetation types in the depth of 0—10 cm and 10—20 cm. Then the correlation between soil active organic carbon and indicators of dominant plants among vegetation community were analyzed by stepwise regression analysis. The results show that the contents of both soil organic carbon (SOC) and active organic carbon decrease with the increase of soil depth. The contents in tree-shrub-herb community are the highest among the three vegetation community, while they are the lowest in herbs community. Although soil samples differ in vegetation type and soil depth, the proportion of SOC in microbial biomass carbon (MBC) and dissolved organic carbon (DOC) remain stable. On the other hand, the proportion of SOC in light fraction organic carbon (LFOC) are found varies with vegetation types and soil depth, and the proportion of SOC in the easily oxidized carbon (EOC) were found varies with vegetation types. There is a closer relationship between soil active organic carbon and indicators of dominant plants (biomass and total C) and among these four indicators, MBC has the closest relationship, DOC, EOC and LFOC are followed.

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备注/Memo

收稿日期:2013-01-09;改回日期:2013-03-27。
基金项目:国家自然科学基金重点基金（41030532）；国家自然科学基金面上项目（41171226）；西北农林科技大学“优秀人才科研专项（QN2011049）”计划资助
作者简介:张宏(1987-),男,浙江金华人,在读研究生,主要研究方向:环境生物工程、生态修复。E-mail:zhang44hong@163.com
通讯作者:黄懿梅(1971-),女,四川省大竹县人,博士,副教授,硕士生导师,主要研究方向:固体废物资源化处理、生态环境监测与评价。E-mail:ymhuang1971@nwsuaf.edu.cn

更新日期/Last Update: 1900-01-01