文档介绍：2012-02-25
DOI: .
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应用与环境生物学报 Chin J Appl Environ Biol 2012,18 (1): 017~022
太岳山油松人工林土壤呼吸对
抚育强度的响应*
刘保新1 汪金松1 康峰峰1 尚宝山2 赵秀海1**
(1北京林业大学省部共建森林培育与保护教育部重点实验室北京 100083)
(2山西省太岳山国有林管理局灵空山林场沁源 046500)
摘要
为了解不同抚育强度下土壤呼吸速率的差异及土壤温湿度对土壤呼吸速率的影响,利用LI-8100土壤 CO2排放
通量全自动测量系统测定山西太岳山油松人工林不同强度抚育后土壤呼吸速率,同时测量土壤表层10 ��处的温度
和湿度. 4块油松人工林样地的抚育强度分别为 20%、30%、40%和50%,对4块抚育样地及1块对照样地进行3种处理:
切根去凋、去凋和对照. 结果表明:切根去凋处理条件下抚育样地与对照样地土壤呼吸速率无显著差异(P > );
去凋处理条件下抚育样地与对照样地土壤呼吸速率呈显著差异(P < ),抚育强度为 20%、30%和 40%样地 6、7月
的土壤呼吸速率显著高于对照样地(P < );对照处理条件下,抚育样地与对照样地土壤呼吸速率呈显著差异(P
< ),抚育强度为30%和40%样地6、7、8月的土壤呼吸速率显著高于对照样地(P < ). 土壤温度和湿度与土壤呼
吸速率显著相关(P < ),且共同解释了土壤呼吸速率变化的30%~74%,是影响土壤呼吸速率变化的重要环境因子.
图3 表 3 参30
关键词抚育强度;土壤呼吸速率;油松人工林;土壤温度;土壤湿度;太岳山
CLC :
Response of Soil Respiration in Pinus tabulaeformis Plantation to Tending
Intensities in the Taiyue Mountain, China*
LIU Baoxin1,WANG Jinsong1, KANG Fengfeng1, SHANG Baoshan2 & ZHAO Xiuhai1**
(1Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forest University, Beijing 100083, China)
(2Lingkong Mountain Tree Farm of Taiyue Mountain National Forest Administration of Shanxi, Qinyuan 046500, Shanxi, China)
Abstract Fo�� un�e��s�an�ing �he effe��s of �en�ing in�ensi�ies, soi���e��e��a�u��e an��ois�u��e on soi����es�i��a�ion ��a�es, �he soi��
��es�i��a�ion ��a�e, soi���e��e��a�u��e, an� soi���ois�u��e a��e��h of 10 �� we��e �easu��e� in a Pinus tabulaeformis ���an�a�ion in �he
Taiyue Moun�ain of Shanxi P��ovin�e, China. The ���o�s we��e �en�e� of woo�s wi�h �iffe��en� in�ensi�ies (20%, 30%, 40% an�
50%, ��es�e��ive��y) befo��e �he �easu��e�en�s. The ��esu���s showe�: 1) The soi����es�i��a�ion ��a�es wi�hou���i��e�� an���oo� ha� no
significant difference (P > ) among the wood tending treatments, while the soil respiration rates with root had significant
�iffe��en�e (P < ). 2) The soil respiration rates of the treatments with 20%, 30% and 40