黄土丘陵区白羊草与达乌里胡枝子混播草地土壤呼吸日变化特征

陈 吉; 王 京; 高志娟; 郭亚力; 吴爱姣; 徐炳成

doi:10.11829/j.issn.1001-0629.2014-0134

黄土丘陵区白羊草与达乌里胡枝子混播草地土壤呼吸日变化特征

陈吉¹,
王京^2,3,4,
高志娟¹,
郭亚力¹,
吴爱姣¹,
徐炳成^2,5,4

1.
西北农林科技大学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
2.
1. 西北农林科技大学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
3.
2. 陕西省动物研究所,陕西西安 710032
4.
5.
2. 中国科学院水利部水土保持研究所,陕西杨凌 712100

基金项目:

教育部新世纪优秀人才支持计划(NECT-11-0444)

国家自然科学基金(41371509)

中央高校基本科研业务费专项(ZD2013020)

摘要: 土壤呼吸是反映土壤质量和肥力性状的重要指标,阐明禾―豆混播草地土壤呼吸作用的变化规律及其影响因素,可以为准确评估混播草地的环境效应及响应提供依据。在2011和2012年6月份,采用动态密闭气室分析法,比较了白羊草(Bothriochloa ischaemum)与达乌里胡枝子(Lespedeza davurica)不同比例间作混播草地总土壤呼吸速率的日变化特征、混播植物贡献率以及温度敏感性等。结果表明,不同混播比例草地的总土壤呼吸速率日变化为单峰型曲线,峰值出现在12:00～14:00。总土壤呼吸速率日均值高低顺序为单播白羊草＞白羊草和达乌里胡枝子间作＞单播达乌里胡枝子。不同间作比例草地的总土壤呼吸速率与白昼气温相关显著(P＜0.05),而与5、10和15 cm土层白昼土壤温度关系不明显;单播条件下,白羊草草丛的土壤呼吸对温度的敏感性高于达乌里胡枝子;各草地土壤呼吸Q10值的变化范围为1.48～2.61,以单播白羊草最高,单播达乌里胡枝子和两者间作混播草地间无显著差异(P0.05)。

关键词:

土壤呼吸 /
混播比例 /
贡献率 /
温度 /
Q10值

English

Diurnal variations of soil respiration in Bothriochloa ischaemum and Lespedeza davurica mixture pasture at Loess Hilly Region

1.
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&
2.
1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&
3.
2. Shaanxi Institute of Zoology, Xi’an 710032, China
4.
5.
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China

Received Date: 2014-03-24
Publish Date: 2015-01-14

Abstract: Soil respiration is an important index for evaluation of soil quality and fertility properties. The clarification of the variations and influence factors of soil respiration in grass-legume mixture pasture will provide evidence for accurately assessment of the effects and response of mixture pasture. In order to comprehensively evaluate the performance of mixture pasture of Bothriochloa ischaemum and Lespedeza davurica, diurnal changes of total soil respiration rate with different mixture ratio of the two species, the contribution of each species and temperature responses of each species were investigated and analyzed in June, 2011 and 2012. The diurnal variation of total soil respiration rates were asymmetric unimodal curves which peaked between 12:00 and 14:00. The daily average of total soil respiration rate decreased in the following order: B. ischaemum monocultureB. ischaemum and L. davurica intercroppingL. davurica monoculture. There were significant correlations between total soil respiration rate and air temperature (P0.05), while there was no significant correlations between soil respiration rate and soil temperature at 5, 10 or 15 cm soil layers. In monoculture, soil respiration rate of B. ischaemum was more sensitive to temperature than that of L. davurica. Q10 values ranged from 1.48 to 2.61 with the highest Q10 value of B. ischaemum monoculture. There was no significant differences between L. davurica monoculture and mixtures.

Keywords:

HTML全文

参考文献(1)

[1]

常生华,侯扶江,于应文,南志标.黄土丘陵沟壑区三种豆科人工草地的植被与土壤特征[J].生态学报.2004,24(5):932-937佘丽娜,郑毅,朱有勇.小麦蚕豆间作中作物对氮的吸收利用[J].云南农业大学学报.2003,18(3):256-258陈玉香,周道玮,张玉芬.玉米、苜蓿间作的产草量及光合作用[J].草地学报.2004,12(2):107-112Nyfeler D,Huguenin-Elie O,Suter M,Frossard E,Lüscher A.Grass-legume mixtures can yield more nitrogen than legume pure stands due to mutual stimulation of nitrogen uptake from symbiotic and non-symbiotic sources[J].Agriculture Ecosystems Environment.2011,140(1):155-163Ghosh P K.Growth,yield,competition and economics of groundnut/cereal fodder intercropping systems in the semi-arid tropics of India[J].Field Crops Research.2004,88:227-237徐炳成,山仑.半干旱黄土丘陵区白羊草人工草地生产力和土壤水分特征研究[J].草业科学.2004,21(6):6-10Jiao J Y,Tzanopoulos J,Xofis P,Bai W J,Ma X H,Mitchley J.Can the study of natural vegetation succession assist in the control of soil erosion on abandoned croplands on the Loess Plateau,China[J].Restoration Ecology.2007,15(3):391-399Li L,Sun J H,Zhang F S,Guo T W,Bao X G,Smith F A,Smith S E.Root distribution and interactions between intercropped species[J].Oecologia.2006,147:280-290Xu B C,Xu W Z,Huang J,Shan L,Li F M.Biomass production and relative competitiveness of a C3 legume and a C4 grass co-dominant in the semiarid Loess Plateau of China[J].Plant and Soil.2011,347:25-39Xu B C,Xu W Z,Huang J,Shan L,Li F M.Biomass allocation,relative competitive ability and water use efficiency of two dominant species in semiarid Loess Plateau under water stress[J].Plant Science.2011,181:644-651Zhang Z H,Duan J C,Wang S P,Luo C Y,Zhu X X,Xu B,Chang X F,Cui S J.Effects of seeding ratios and nitrogen fertilizer on ecosystem respiration of common vetch and oat on the Tibetan Plateau[J].Plant and Soil.2013,362:287-299Liebig M A,Doran J W,Gardner J C.Evaluation of a field test kit for measuring selected soil quality indicators[J].Agronomy Journal.1996,88(4):683-686Jolliffe P A.The replacement series[J].Journal of Ecology.2000,88(3):371-385Singh J S,Gupta S R.Plant decomposition and soil respiration in terrestrial ecosystems[J].The Botanical Review.1977,43:449-528Hanson P J,Edwards N T,Garten C T,Andrews J A.Separating root and soil microbial contributions to soil respiration:A review of methods and observations[J].Biogeochemistry.2000,48(1):115-146Loveys B R,Atkinson L J,Sherlock D J,Roberts R L,Fitter A H,Atkin O K.Thermal acclimation of leaf and root respiration:An investigation comparing inherently fast- and slow-growing plant species[J].Global Change Biology.2003,9(6):895-910徐炳成,山仑,李凤民.半干旱黄土丘陵区五种植物的生理生态特征比较[J].应用生态学报.2007,18(5):990-996Biasi C,Rusalimova O,Meyer H,Kaiser C,Wanek W,Barsukov P,Junger H,Richter A.Temperature-dependent shift from labile to recalcitrant carbon sources of arctic heterotrophs[J].Rapid Communications in Mass Spectrometry.2005,19(11):1401-1408

资源附件(0)

计量

PDF下载量: 399
文章访问数: 1427
HTML全文浏览量: 120
被引次数: 0

黄土丘陵区白羊草与达乌里胡枝子混播草地土壤呼吸日变化特征

English

Diurnal variations of soil respiration in Bothriochloa ischaemum and Lespedeza davurica mixture pasture at Loess Hilly Region

计量

文章相关

目录