文献类型：期刊文献

中文题名：华北山区非主要生长季典型人工林土壤呼吸变化特征

英文题名：Soil Respiration of the Representative Artificial Forests During the Minor Growing Season in the Hilly Region of North-China

作者：王鹤松[1] 张劲松[1] 孟平[1] 高峻[1] 贾长荣[2]

第一作者：王鹤松

机构：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室;[2]济源市国有大沟河林场

年份：2007

卷号：20

期号：6

起止页码：820-825

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：科技部社会公益性项目(2003DIB4J142);国家十五攻关课题(2004BA510B11);黄河小浪底森林生态系统定位研究站基金资助项目部分研究内容

语种：中文

中文关键词：华北山区;侧柏;栓皮栎;土壤呼吸;非主要生长季

外文关键词：hilly region of North-China; Platycladus orientalis ; Ouercus variabili ; soil respiration ; minor growing sea-son

分类号：S714.3

摘要：2005年11月至2006年3月,利用Li-8100土壤呼吸自动观测系统及AR-A-ECH土壤温度湿度自动观测系统,观测了华北山区30年生侧柏和25年生栓皮栎林土壤呼吸速率与土壤温度及湿度,分析了非主要生长季土壤呼吸变化特征。结果表明:(1)晴或多云条件下,2种人工林林地土壤呼吸速率都明显高于阴天,但日变化均不明显;整个非主要生长季,土壤呼吸速率(SRR)呈现出明显的日际变化特征;2005年11月至2006年1月,SRR呈显著降低的趋势,在2月份,维持在相对较低水平,进入3月中旬则迅速回升,降雪使SRR均有不同程度的增加;整个非主要生长季,侧柏林地与栓皮栎林地的平均SRR分别为0.61、0.39μmol.m-2.s-1。(2)2种人工林林地地表及地下5、10、15、20 cm深处土壤温度与SRR都存在显著的指数相关关系(p<0.01),且5 cm深处的土壤温度与SRR的相关性最好,侧柏和栓皮栎在该深处的Q10值分别是2.280和1.602;侧柏、栓皮栎林地SRR与土壤含水量分别呈显著的线性相关关系、多项式相关关系(p<0.01)。这2种人工林林地SRR与5 cm深处的土壤温度和土壤含水量均有很好的复相关关系(p<0.01),且比较偏相关系数表明:影响2种林地土壤呼吸速率的最主要土壤环境因子都是土壤温度。
Soil respiration of two representative artificial forests during the minor growing season in the hilly region of North-China, in case of 30 years old Platycladus orientalis and 25 years old Ouercus variabili, were analyzed. Soil respiration rate was measured by Li-8100 automatic monitoring system, and the soil temperature and soil water content was measured by AR-A-ECH automatic monitoring system from Nov. of 2005 to Mar. of 2006 . The main results are as follows： （1）For both the two artificial forests, soil respiration rate （SRR）in clear-cloudy day was markedly higher than that in overcast day, but the diurnal variation of SRR was not apparent under the two weather conditions. Daily SRR changed significantly, and characterized with that SRR decreased sharply from November to January of the next year,and maintained at a relatively low value in February,and then increased rapidly after the middle of March. Snowing made SRR rise varying extents during this season. The average SRR of orien- talis and Ouercus variabili were 0.61μmol · m^-2· s^-1 and 0.39 μmol · m^-2 · s^-1 respectively in the whole minor growing season. at the 0, 5,10,1 2） Significant relationship were found between the two artificial forests SRR and soil temperatures and 20 cm depth from the soil surface（p 〈0.01 ）, which could be well described by exponential equations, and the best significant relationship happened at the 5 cm depth, where Q10 of Platycladus orientalis and Ouercus variabili were 2. 280μmol · m^-2 ·s^-1 and 1. 602 μmol · m^-2 · s^-1 respectively. SRR was also correlated with the soil water content （p 〈 0.01 ）, the regression equation for Platycladus orientalis was linear, but muhinomial for Ouercus variabili. SRR was significantly related to soil temperature （ Ts ） and soil water content （SW） at 5 cm depth. Ts was the most important factor that effected on SRR for both the two artificial forests through comparing the partial coefficient of Ts and SW at the 5 cm depth .