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地震灾区2种气候生态治理区恢复初期土壤呼吸动态及其影响因子

吴建召 严思维 崔羽 罗清虎 林勇明 王道杰 吴承祯

吴建召, 严思维, 崔羽, 罗清虎, 林勇明, 王道杰, 吴承祯. 地震灾区2种气候生态治理区恢复初期土壤呼吸动态及其影响因子[J]. 北京林业大学学报, 2019, 41(3): 93-104. doi: 10.13332/j.1000-1522.20180192
引用本文: 吴建召, 严思维, 崔羽, 罗清虎, 林勇明, 王道杰, 吴承祯. 地震灾区2种气候生态治理区恢复初期土壤呼吸动态及其影响因子[J]. 北京林业大学学报, 2019, 41(3): 93-104. doi: 10.13332/j.1000-1522.20180192
Wu Jianzhao, Yan Siwei, Cui Yu, Luo Qinghu, Lin Yongming, Wang Daojie, Wu Chengzhen. Dynamics of soil respiration and its influencing factors at the early stage of ecological restoration of two kinds of climate in earthquake-affected area[J]. Journal of Beijing Forestry University, 2019, 41(3): 93-104. doi: 10.13332/j.1000-1522.20180192
Citation: Wu Jianzhao, Yan Siwei, Cui Yu, Luo Qinghu, Lin Yongming, Wang Daojie, Wu Chengzhen. Dynamics of soil respiration and its influencing factors at the early stage of ecological restoration of two kinds of climate in earthquake-affected area[J]. Journal of Beijing Forestry University, 2019, 41(3): 93-104. doi: 10.13332/j.1000-1522.20180192

地震灾区2种气候生态治理区恢复初期土壤呼吸动态及其影响因子

doi: 10.13332/j.1000-1522.20180192
基金项目: 国家自然科学基金项目(41790434),福建农林大学杰出青年科研人才计划项目(xjq201716),福建农林大学科技创新专项项目(CXZX2017111、CXZX2017283)
详细信息
    作者简介:

    吴建召。主要研究方向:恢复生态学。 Email:wjzhao168@outlook.com 地址:350002 福建省福州市仓山区上下店路15号福建农林大学林学院

    责任作者:

    林勇明,博士,教授。主要研究方向:区域资源优化、生态学。Email:monkey1422@163.com 地址:同上

  • 中图分类号: S718.51+2;Q948.11

Dynamics of soil respiration and its influencing factors at the early stage of ecological restoration of two kinds of climate in earthquake-affected area

  • 摘要: 目的土壤呼吸速率是反映生态系统对胁迫的敏感程度和响应模式的重要参数之一,生态恢复过程可引起土壤呼吸速率变化,研究地震灾区不同生态恢复方式的土壤呼吸动态变化及其与环境因子的关系,对准确认识灾害干扰区生态恢复过程中的区域性碳循环特征至关重要。方法选择干旱河谷气候区(汶川县威州镇)和亚热带季风气候区(绵竹市汉旺镇)的生态恢复示范区为研究区,以受损治理区(DTA)、自然恢复区(NRA)和未受损区(UA)为处理样地,于2015年9月至2016年9月,对土壤呼吸速率(Rs)、5 cm深土壤温度(T5)、5 cm深土壤湿度(W5)、近地面温度(T0)及近地面湿度(W0)进行动态监测,分析土壤呼吸的动态特征及其对土壤温度和水分的响应。结果(1)日尺度Rs最高值出现在11:00—15:00,最低值出现在10:00或18:00,在2个气候区总体上均表现为UA > DTA > NRA,且表现为明显的单峰曲线,具有一定的波动性;季节尺度Rs夏秋季最高,冬季最低,不同季节Rs总体上表现为UA > DTA > NRA。(2)干旱河谷气候区和亚热带季风气候区土壤湿度分别 < 27%和 > 16%时,土壤呼吸主要受土壤温度调控;相对于单因素模型,RsT5W5的双因素模型回归关系更好,T5W5Rs的解释量(R2)均有所提高且大于0.762。(3)干旱河谷气候区DTA、UA和NRA的温度敏感系数Q10分别为2.34、1.95、2.78,亚热带季风气候区Q10则分别为1.99、1.25、2.90,表现为NRA对土壤温度变化最为敏感。结论与UA比较,干旱河谷气候区DTA与NRA土壤呼吸速率分别降低41%和50%,亚热带季风气候区则分别降低21%和23%。

     

  • 图  1  干旱河谷气候区(V)和亚热带季风气候区(M)不同季节土壤呼吸日间动态变化

    误差线为均值 ± 标准差。15−9. 2015年9月;15−12. 2015年12月;16−03. 2016年3月;16−06. 2016年6月;16−09. 2016年9月。下同。15−9, September in 2015; 15−12, December in 2015; 16−03, March in 2016; 16−06, June in 2016; 16−09, September in 2016. The error line is the mean ± standard deviation. The same below.

    Figure  1.  Diurnal variations of soil respiration rate under different recovery modes during different seasons in arid-valley climate (V) and subtropical monsoon climate (M) regions

    图  2  干旱河谷气候区(V)和亚热带季风气候区(M)不同季节土壤温度日间动态变化

    柱状图不同小写字母表示不同样地间差异显著(P < 0.05)。Different lowercase letters indicate significant differences between plots (P < 0.05).

    Figure  2.  Diurnal variations of soil temperature under different recovery modes during different seasons in arid-valley climate (V) and subtropical monsoon climate (M) regions

    图  3  干旱河谷气候区(V)和亚热带季风气候区(M)不同季节土壤湿度日间动态变化

    Figure  3.  Diurnal variations of soil moisture under different recovery modes during different seasons in arid-valley climate (V) and subtropical monsoon climate (M) regions

    图  4  干旱河谷气候区(V)和亚热带季风气候区(M)土壤呼吸季节变化

    不同小写字母表示不同样地间差异显著(P < 0.05)。Different lowercase letters indicate significant differences between plots (P < 0.05).

    Figure  4.  Seasonal dynamics of soil respiration rate under different recovery modes in arid-valley climate (V) and subtropical monsoon climate (M) regions

    图  5  干旱河谷气候区和亚热带季风气候区不同处理样地温度和土壤呼吸季节动态规律

    VT0. 干旱河谷气候区的近地面温度;VT5. 干旱河谷气候区的5 cm深土壤温度;MT0. 亚热带季风气候区的近地面温度;MT5. 亚热带季风气候区的5 cm深土壤温度;VW0. 干旱河谷气候区的近地面湿度;VW5. 干旱河谷气候区的5 cm深土壤湿度;MW0. 亚热带季风气候区的近地面湿度;MW5. 亚热带季风气候区的5 cm深土壤湿度;VRS. 干旱河谷气候区的土壤呼吸速率;MRS. 亚热带季风气候区的土壤呼吸速率。VT0, near-surface temperature in arid-valley climate; VT5, 5 cm deep soil temperature in arid-valley climate; MT0, near-surface temperature in subtropical monsoon climate; MT5, 5 cm deep soil temperature in subtropical monsoon climate; VW0, near-surface moisture in arid-valley climate; VW5, 5 cm deep soil moisture in arid-valley climate; MW0, near-surface moisture in subtropical monsoon climate; MW5, 5 cm deep soil moisture in subtropical monsoon climate; VRS, soil respiration rate in arid-valley climate; MRS, soil respiration rate in subtropical monsoon climate.

    Figure  5.  Seasonal variations of temperature, moisture and soil respiration under different recovery sample plots in arid-valley climate and subtropical monsoon climate regions

    表  1  不同气候区各处理方式样地基本概况

    Table  1.   Characteristics of study areas in arid-valley climate and subtropical humid climate regions

    气候类型
    Climate type
    样地类型
    Sample plot type
    经度
    Longitude
    纬度
    Latitude
    海拔
    Altitude/m
    坡度
    Gradient/(°)
    坡向
    Slope aspect
    植被盖度 Vegetation coverage/%
    干旱河谷气候区
    Arid-valley
    climate region
    未受损区
    Undestroyed area (UA)
    103°28′12″E31°19′16″N1 26034北向
    North
    79
    受损治理区
    Destroyed and treated area (DTA)
    103°34′23″E31°28′23″N1 37739北向
    North
    52
    自然恢复区
    Natural recovery area (NRA)
    103°25′26″E31°23′10″N1 26525北向
    North
    12
    亚热带季风气候区
    Subtropical monsoon
    climate region
    未受损区
    Undestroyed area (UA)
    104°09′40″E31°27′43″N72921北向
    North
    84
    受损治理区
    Destroyed and treated area (DTA)
    104°09′32″E31°27′47″N72222北向
    North
    55
    自然恢复区
    Natural recovery area (NRA)
    104°06′25″E31°32′31″N89219北向
    North
    23
    下载: 导出CSV

    表  2  2种气候区各处理样地土壤呼吸与5 cm深土壤日温的函数拟合

    Table  2.   Function fitting of soil respiration with soil temperature at 5 cm depth under different recovery sample plots in arid-valley climate (V) and subtropical monsoon climate (M) regions

    样地类型
    Sample plot type
    月份
    Month
    干旱河谷气候区
    Arid-valley climate region (V)
    亚热带季风气候区
    Subtropical monsoon climate region (M)
    土壤湿度
    Soil moisture/%
    回归方程
    Regression equation
    R2P土壤湿度
    Soil moisture/%
    回归方程
    Regression equation
    R2P
    受损治理区 DTA15−09> 27R = 1.049 7e0.034 7T0.530 70.101> 16R = 0.004 7e0.264 1T0.879 80.006
    15−12< 27R = 0.033 3e0.184 1T0.936 60.002< 16R = 0.947 0e− 0.014 7T0.000 20.978
    16−03< 27R = 0.000 6e0.558 9T0.927 60.002> 16R = 0.017 4e0.245 8T0.890 20.004
    16−06> 27R = 0.001e0.178 6T0.427 20.159> 16R = 0.027 9e0.182 9T0.911 30.003
    16−09< 27R = 0.034 9e0.182 5T0.882 60.005> 16R = 0.000 3e0.488 0T0.715 10.034
    未受损区
    UA
    15−09> 27R = 1.023 6e0.054 7T0.686 30.042> 16R = 0.160 8e0.109 5T0.847 40.009
    15−12< 27R = 0.020 9e0.200 4T0.645 40.054< 16R = 0.046 7e0.337 4T0.771 60.021
    16−03< 27R = 0.004 0e0.243 5T0.888 40.005> 16R = 0.001 5e0.395 6T0.734 50.029
    16−06> 27R = 1.011 5e0.050 9T0.473 50.131> 16R = 0.032 0e0.171 5T0.800 50.016
    16−09< 27R = 0.131 3e0.165 9T0.672 80.046> 16R = 0.113 2e0.116 7T0.620 00.063
    自然恢复区 NRA15−09> 27R = 0.013 3e0.166 6T0.758 40.024> 16R = 0.033 0e0.157 6T0.889 60.005
    15−12< 27R = 0.094 7e0.059 7T0.038 80.708< 16R = 14.617 0e− 0.248 5T0.056 00.652
    16−03< 27R = 56.503 0e− 0.230 5T0.026 90.756> 16R = 0.120 7e0.087 8T0.762 20.023
    16−06> 27R = 0.157 5e0.075 5T0.101 70.538> 16R = 0.063 6e0.136 7T0.679 00.044
    16−09< 27R = 0.125 0e0.113 9T0.805 70.015> 16R = 0.008 7e0.218 7T0.619 90.063
    注:模型间显著性差异(P < 0.05)以粗体显示。Note: P-values showing significant (P < 0.05) differences between the models are presented in bold.
    下载: 导出CSV

    表  3  土壤呼吸日均速率与土壤温度和土壤湿度的相关性

    Table  3.   Correlation of daily mean soil respiration rate with soil temperature and moisture

    气候类型
    Climate type
    处理方式
    Treatment method
    R = aebTR = aW + bR = aebTWc
    abR2abR2abcR2Q10
    干旱河谷气候区
    Arid-valley
    climate region
    受损治理区 DTA0.183 40.085 20.8080.081 9− 0.264 20.7720.0420.0530.7340.9802.34
    未受损区 UA0.493 30.066 80.4230.157 4− 0.699 70.9560.0550.0021.1000.9951.95
    自然恢复区 NRA0.078 80.102 40.5590.096 2− 0.655 30.6550.0040.0641.3280.8332.78
    亚热带季风气候区
    Subtropical monsoon
    climate region
    受损治理区DTA0.344 70.068 70.9290.058 5− 0.004 00.8704.8370.154− 1.3780.9831.99
    未受损区 UA1.053 30.022 10.6940.024 91.067 30.4832.6380.055− 0.5050.7621.25
    自然恢复区 NRA0.119 50.106 40.8730.093 6− 1.075 10.8190.0310.1350.2100.9212.90
    下载: 导出CSV
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  • 收稿日期:  2018-06-11
  • 修回日期:  2018-06-26
  • 网络出版日期:  2019-03-28
  • 刊出日期:  2019-03-01

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