XU Ting,MA Lulu,LI Zesen,et al.Response of Soil Respiration to Changes of Rainfall Pattern in Naturally Restored Grassland in Loess Hilly Region[J].Research of Soil and Water Conservation,2023,30(05):92-98.[doi:10.13869/j.cnki.rswc.2023.05.004.]
黄土丘陵区自然恢复草地土壤呼吸对降雨格局改变的响应
- Title:
- Response of Soil Respiration to Changes of Rainfall Pattern in Naturally Restored Grassland in Loess Hilly Region
- 文章编号:
- 1005-3409(2023)05-0092-07
- 分类号:
- X171
- 文献标志码:
- A
- 摘要:
- [目的]揭示黄土丘陵区自然恢复草地土壤呼吸对长期改变降雨的响应情况,并阐明不同降雨处理土壤呼吸与土壤温度、土壤含水量的关系。[方法]以黄土丘陵区自然恢复草地群落为对象,进行长期野外人工控制降雨试验,设置增雨20%,40%,60%以及减雨20%,40%,60%和对照处理,测定土壤呼吸、土壤温度、土壤含水量。[结果]不同降雨处理土壤呼吸在生长季呈单峰曲线,7月达最大值,10月达最小值; 在整个生长季内,增雨20%、增雨60%对土壤呼吸无显著促进作用,增雨40%及减雨20%,40%,60%显著降低土壤呼吸(p<0.05),表现为土壤呼吸随降雨量的增加而降低。生长季内,降雨显著影响土壤含水量(p<0.05),土壤含水量随雨量减少而减少; 与对照相比除减雨60%处理外,其余降雨处理显著降低了土壤温度(p<0.05)。无水分胁迫条件下,不同降雨处理土壤温度与土壤呼吸均呈极显著指数相关(p<0.01); 各降雨处理土壤含水量与土壤呼吸均呈显著二次函数相关(p<0.05); 土壤温度、土壤含水量双因素与土壤呼吸呈极显著的线性、幂—指数相关,且双因素幂—指数模型最优。[结论]总体上,降雨对黄土丘陵区自然恢复草地群落土壤呼吸的影响受土壤温度与土壤含水量联合调控,其主导程度取决于是否发生水分胁迫。
- Abstract:
- [Objective] The response of soil respiration to long-term change of rainfall in naturally restored grassland in the loess hilly region was revealed, and the relationship between soil respiration and soil temperature and soil water content under different rainfall treatments was expounded. [Methods] The natural restoration of grassland communities in the loess hilly area was taken as the object. Long-term field artificially controlled rainfall experiment on setting 20%, 40%, 60% rain increase and 20%, 40%, 60% rain reduction and control treatments was conducted. Soil respiration, soil temperature, and soil water content were measured. [Results](1)Soil respiration under different rainfall treatments showed a unimodal curve in the growing season, reaching a maximum value in July and a minimum value in October. In the whole growing season, the increase of rainfall by 20% and the increase of rainfall by 60% had no significant effect on soil respiration. 40% increase in rainfall and 20%, 40% and 60% decrease in rainfall significantly inhibited soil respiration(p<0.05), which showed that soil respiration decreased with the increase of rainfall.(2)In the growing season, rainfall significantly affected soil water content(p<0.05), which decreased with the decrease of rainfall. Except for 60% decrease in rainfall treatment, the other rainfall treatments significantly decreased soil temperature(p<0.05).(3)Under the condition of no water stress, soil temperature and soil respiration in different rainfall treatments showed extremely significant exponential correlation(p<0.01). Soil water content and soil respiration in each rainfall treatment showed significant quadratic function correlation(p<0.05). The two factors of soil temperature and soil water content had the very significant linear and power-exponential correlation with soil respiration, repcectively, and the two-factor power-exponential model was optimal. [Conclusion] In general, the effect of rainfall on the soil respiration of the naturally restored grassland community in the loess hilly area is jointly regulated by soil temperature and soil water content, and its dominant degree depends on whether water stress occurs.
参考文献/References:
[1] Jeff T. IPCC climate report: Earth is warmer than it's been in 125,000 years[J]. Nature, 2021,596(7871):171-172.
[2] Du Y, Wang Y P, Su F L, et al. The response of soil respiration to precipitation change is asymmetric and differs between grasslands and forests[J]. Global Change Biology, 2020,26(10):6015-6024.
[3] 於方,朱文泉,曹东,等.青海省因草地生态破坏造成土壤流失的经济损失核算[J].中国环境科学,2009,29(1):90-94.
[4] Schuma G E, Janzen H H, Herrick J E. Soil carbon dynamics and potential carbon sequestration by rangelands[J]. Environmental Pollution, 2002,116(3):391-396.
[5] 王胜,樊军,王建国,等.水蚀风蚀交错区土壤呼吸特征及其对水热因子的响应[J].农业环境科学学报,2014,33(9):1770-1781.
[6] Churkina G, Running S W, Schloss A L. Comparing global models of terrestrial net primary productivity(NPP):the importance of water availability[J]. Global Change Biology, 1999,5(1):46-55.
[7] Liu L L, Wang X, Lajeunesse M J, et al. A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes[J]. Global Change Biology, 2016,22(4):1394-1405.
[8] 李寅龙,红梅,白文明,等.水、氮控制对短花针茅草原土壤呼吸的影响[J].生态学报,2015,35(6):1727-1733.
[9] 陶冬雪,李文瑾,杨恬,等.降水变化和养分添加对呼伦贝尔草甸草原土壤呼吸的影响[J].生态学杂志,2022,41(3):465-472.
[10] 王兴,钟泽坤,朱玉帆,等.增温和增雨对黄土丘陵区撂荒草地土壤呼吸的影响[J].环境科学,2022,43(3):1657-1667.
[11] 周俊杰,陈志飞,杨全,等.黄土丘陵区退耕草地土壤呼吸及其组分对氮磷添加的响应[J].环境科学,2020,41(1):479-488.
[12] Zhang L H, Chen Y N, Zhao R F, et al. Significance of temperature and soil water content on soil respiration in three desert ecosystems in Northwest China[J]. Journal of Arid Environments, 2010,74(10):1200-1211.
[13] Rey A, Pegoraro E, Tedeschl V, et al. Annual variation in soil respiration and its components in a coppice oak forest in Central Italy[J]. Global Change Biology, 2002,8(9):851-866.
[14] 宋晓辉,王悦骅,王占文,等.不同放牧强度和水分处理下荒漠草原土壤呼吸与群落地下生物量的关系[J].草地学报,2019,27(4):962-968.
[15] 杨青霄,田大栓,曾辉,等.降水格局改变背景下土壤呼吸变化的主要影响因素及其调控过程[J].植物生态学报,2017,41(12):1239-1250.
[16] 李新鸽,韩广轩,朱连奇,等.降雨量改变对黄河三角洲滨海湿地土壤呼吸的影响[J].生态学报,2019,39(13):4806-4820.
[17] 蒿廉伊,张丽华,谢忠奎,等.降水变化对荒漠草原土壤呼吸的影响[J].环境科学,2021,42(9):4527-4537.
[18] 彭琴,齐玉春,董云社,等.干旱半干旱地区草地碳循环关键过程对降雨变化的响应[J].地理科学进展,2012,31(11):1510-1518.
[19] 姜佰文,李静,陈睿,等.降雨年型变化及竞争对反枝苋和大豆生长的影响[J].生物多样性,2018,26(11):1158-1167.
[20] 朱义族,李雅颖,韩继刚,等.水分条件变化对土壤微生物的影响及其响应机制研究进展[J].应用生态学报,2019,30(12):4323-4332.
[21] 邵玉琴,赵吉,杨劫.恢复草地和退化草地土壤微生物类群数量的分布特征[J].中国沙漠,2004,24(3):223-226.
[22] 全权,张震,何念鹏,等.短期氮添加对东灵山3种森林土壤呼吸的影响[J].生态学杂志,2015,34(3):797-804.
[23] Davidson E A, Verchot L V, Cattânio J H, et al. Effects of soil water content on soil respiration in forests and cattle pastures of Eastern Amazonia[J]. Biogeochemistry, 2000,48(1):53-69.
[24] 范洪旺,滕臻,许克福.城市绿地土壤呼吸研究综述[J].生态科学,2018,37(5):210-216.
[25] 魏书精,罗碧珍,孙龙,等.森林生态系统土壤呼吸时空异质性及影响因子研究进展[J].生态环境学报,2013,22(4):689-704.
[26] Davidson E A, Belk E, Boone R D. Soil water content and temperature as independent or confounded factors controlling soil respiration in a temperate mixed hardwood forest[J]. Global Change Biology, 1998,4(2):217-227.
[27] 高宇,樊军,米美霞,等.水蚀风蚀交错区土壤呼吸影响因素及其对土地利用方式变化的响应[J].植物营养与肥料学报,2013,19(5):1207-1217.
[28] 郭艳萍,李洪建.天龙山灌丛生态系统土壤呼吸对水热和植被因子的响应[J].中国土壤与肥料,2022(4):131-139.Doi:10.11838/sfsc.1673-6257.21262.
[29] Wang Y, Hu Y, Ji B, et al. An investigation on the relationship between emission/uptake of greenhouse gases and environmental factors in Serniarid Grassland[J]. Advances in Atmospheric Sciences, 2003,20(1):119-127.
[30] 张鹤,陈吉,熊沛枫,等.黄土丘陵区3种典型天然草地群落土壤呼吸对模拟降雨的响应[J].环境科学学报,2017,37(8):3139-3148.
[31] 陈全胜,李凌浩,韩兴国,等.典型温带草原群落土壤呼吸温度敏感性与土壤水分的关系[J].生态学报,2004,24(4):831-836.
相似文献/References:
[1]许浩,蒋齐,潘占兵,等.黄土丘陵区降雨、土壤水分和苗木成活率的关系[J].水土保持研究,2012,19(05):202.
XU Hao,JIANG Qi,PAN Zhan-bing,et al.Relationship of Rainfall, Soil Moisture and Seedling Survival Rate in Loess Hilly Region[J].Research of Soil and Water Conservation,2012,19(05):202.
[2]赵发珠,韩新辉,杨改河,等.黄土丘陵区不同退耕还林地土壤有机碳、氮密度变化特征[J].水土保持研究,2012,19(04):43.
ZHAO Fa-zhu,HAN Xin-hui,YANG Gai-he,et al.Change Characteristics of Density of Soil Organic Carbon and Nitrogen under Land Shifted into Forestland in Hilly Loess Region[J].Research of Soil and Water Conservation,2012,19(05):43.
[3]陈宇,焦菊英,王宁,等.黄土丘陵区撂荒地不同侵蚀带土壤种子库特征[J].水土保持研究,2012,19(01):1.
CHEN Yu,JIAO Ju-ying,WANG Ning,et al.Characteristics of Soil Seed Banks under Different Erosion Zones on Abandoned Land in the Hilly-gullied Loess Plateau[J].Research of Soil and Water Conservation,2012,19(05):1.
[4]邹厚远,关秀琦,鲁子瑜,等.黄土丘陵区造林技术研究[J].水土保持研究,1994,1(03):48.
Zou Houyuan,Guan Xiuqi,Lu Ziyu,et al.The Research Report on Foresting Technique in the Loess Hilly Region[J].Research of Soil and Water Conservation,1994,1(05):48.
[5]关秀琦,邹厚远,鲁子瑜,等.黄土高原草地生产持续发展研究──Ⅰ．沙打旺人工草地衰退后的草种更替[J].水土保持研究,1994,1(03):56.
Guan Xiuqi,Zou Houyuan,Lu Ziyu,et al.Study on the Sustainable Development of the Grassland Production in Loess Plateau──Ⅰ. Grass Varieties Alternation in the Declined Artifical Grassland of Astragalus adsurgens[J].Research of Soil and Water Conservation,1994,1(05):56.
[6]关秀琦,邹厚远,鲁子瑜,等.黄土高原草地持续发展研究──Ⅲ．补播柠条和兴安胡枝子建立永久放牧草地试验[J].水土保持研究,1994,1(03):65.
Guan Xiuqi,Zou Houyuan,Lu Ziyu,et al.Study on the Sustainable Development of the Grassland Production in Loess Plateau──Ⅲ. The Experiment of Builiding Permanent Grassland for herding by reseeding Caragana korshinskii and Lespedeza daharica[J].Research of Soil and Water Conservation,1994,1(05):65.
[7]程积民.宁南黄土丘陵区立体型高产半人工草地研究[J].水土保持研究,1996,3(01):38.
Cheng Jimin.A Study on Establishing Stereo Style’s Semi-artificial Pasture with High Yeild in Southern Ningxia Loess Hilly Area[J].Research of Soil and Water Conservation,1996,3(05):38.
[8]程积民.宁南黄土丘陵区灌木林生产力的研究[J].水土保持研究,1996,3(01):129.
Cheng Jimin.Study on Productivity of Shrubberies in Loess Hilly Region of South Ningxia[J].Research of Soil and Water Conservation,1996,3(05):129.
[9]侯喜禄,白岗栓,曹清玉.黄土丘陵区湾塌地乔灌林土壤水分动态监测[J].水土保持研究,1996,3(02):57.
Hou Xilu,Bai Gangshuan,Cao Qingyu.Dynamic Observation of Soil Moisture on Arbor and Shrubbery in Sinking Lands in Loess Hilly Region[J].Research of Soil and Water Conservation,1996,3(05):57.
[10]安兴东,梁银丽,Kazuyoshi Takeda.宁南黄土丘陵区国外麦类的引种[J].水土保持研究,1998,5(01):76.
An Xingdong,Liang Yinli,Kazuyoshi Takeda.Foreign Triticeae Introduction in the Loess Hilly Area of Southern Ningxia[J].Research of Soil and Water Conservation,1998,5(05):76.
备注/Memo
收稿日期:2022-07-15 修回日期:2022-08-28
资助项目:国家自然科学基金面上项目“黄土丘陵区土壤斥水性及其对降水入渗机制的影响研究”(41977426)
第一作者:徐婷(1997—),女,重庆市璧山人,硕士研究生,主要从事黄土丘陵区土壤水分入渗的研究。E-mail:Tiana_xuting@163.com
通信作者:焦峰(1967—),男,陕西省三原县人,博士,研究员,主要从事水土保持环境效应评价方面的研究工作。E-mail:Jiaof@ms.iswc.ac.cn