The response of ecosystem CO2 exchange to small precipitation pulses over a temperate steppe

文献类型： 外文期刊

第一作者： Hao, Yanbin

作者： Hao, Yanbin;Wang, Yanfen;Mei, Xurong;Cui, Xiaoyong

作者机构：

关键词： respiration;photosynthesis;soil moisture;evapotranspiration;ecosystem respiration;biochemical transformation;ecosystem carbon dioxide exchange;small preciptation pulse;temperature steppe

期刊名称：PLANT ECOLOGY （ 影响因子：1.854； 五年影响因子：2.194 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： In water-limited grassland ecosystems, discrete and occasional precipitation events trigger brief but important episodes of biological activity. Differential responses of above- and below-ground biota to precipitation pulses may constrain biogeochemical transformations at the ecosystem scale. We examined the short-term dynamics of the whole ecosystem response to small precipitation events during 2003 and 2004 in a steppe on the Inner Mongolia Plateau. The results indicate that changes in soil moisture occur, with a 1-2 day time lag, only when the amount of precipitation exceeds 3 mm (from day of year [DOY] 120 to DOY 180) or 5 mm (after DOY 180). The interception of the developing plant canopy is a primary reason for the different temporal precipitation threshold. The lower threshold of effective rain is different between Net Ecosystem Exchange (NEE, 3 mm), Ecosystem Respiration (R (e), 3 mm) and Gross Ecosystem Production (GEP, 5 mm). The NEE reached a maximum 4-5 days after the end of effective rain events and dropped to 60-70% of the original fluxes after 10 days. However, the drop in GEP was greater than that of NEE and reached 30-50% of the original fluxes after 10-15 days without "effective rainfall." The characteristics of the response time can be attributed to the variation in soil water content and the time of readjusting for the ecological processes after the effective rainfall. In addition, the independent responses of photosynthesis, respiration and evapotranspiration to precipitation probably contributed to this time lag. The results support the hypothesis that the concept of an ecologically significant rainfall event can be developed for an ecosystem.

分类号： Q94

  • 相关文献

[1]CO(2)H(2)O and energy exchange of an Inner Mongolia steppe ecosystem during a dry and wet year. Wang, Yanfen,Cui, Xiaoyong,Zhou, Xiaoqi,Niu, Haishan,Hao, Yanbin,Huang, Xiangzhong,Cui, Xiaoyong,Mei, Xurong. 2008

[2]MAIZE GROWTH, YIELD FORMATION AND WATER-NITROGEN USAGE IN RESPONSE TO VARIED IRRIGATION AND NITROGEN SUPPLY UNDER SEMI-ARID CLIMATE. Ashraf, Umair,Pan, Shenggang,Tang, Xiangru,Ashraf, Umair,Pan, Shenggang,Tang, Xiangru,Salim, Mazhar Noor,Sher, Alam,Khan, Aqil,Sabir, Sabeeh-ur-Rasool. 2016

[3]The role of Gracilaria lemaneiformis in eliminating the dissolved inorganic carbon released from calcification and respiration process of Chlamys farreri. Jiang, Zeng Jie,Fang, Jian Guang,Han, Ting Ting,Mao, Yu Ze,Li, Jia Qi,Du, Mei Rong.

[4]Relationships between soil respiration and photosynthesis-related spectral vegetation indices in two cropland ecosystems. Huang, Ni,Niu, Zheng,Zhan, Yulin,Xu, Shiguang,Wu, Chaoyang,Gao, Shuai,Hou, Xuehui,Cai, Dewen,Huang, Ni,Xu, Shiguang,Hou, Xuehui,Cai, Dewen,Tappert, Michelle C.,Huang, Wenjiang.

[5]Developmental changes in carbon and nitrogen metabolism affect tea quality in different leaf position. Li, Zhi-Xin,Ahammed, Golam Jalal,Shen, Chen,Yan, Peng,Li, Xin,Han, Wen-Yan,Li, Zhi-Xin,Shen, Chen,Yang, Wei-Jun,Ahammed, Golam Jalal.

[6]Lead toxicity in rice: effects, mechanisms, and mitigation strategies-a mini review. Ashraf, Umair,Kanu, Adam Sheka,Mo, Zhaowen,Tang, Xiangru,Ashraf, Umair,Kanu, Adam Sheka,Mo, Zhaowen,Tang, Xiangru,Hussain, Saddam,Anjum, Shakeel Ahmad,Khan, Imran,Abbas, Rana Nadeem.

[7]Acclimation of bloom-forming and perennial seaweeds to elevated pCO(2) conserved across levels of environmental complexity. Xu, Dong,Lin, Fan,Zhang, Xiao W.,Fan, Xiao,Teng, Lin H.,Wang, Yi T.,Zhuang, Zhi M.,Ye, Naihao,Xu, Dong,Ye, Naihao,Schaum, Charlotte-Elisa,Sun, Ke,Sun, Ke,Munroe, James R..

[8]A Satellite-Based Model for Simulating Ecosystem Respiration in the Tibetan and Inner Mongolian Grasslands. Ge, Rong,He, Honglin,Ren, Xiaoli,Zhang, Li,Zeng, Na,Yu, Guirui,Zhang, Liyun,Shi, Peili,Ge, Rong,Zeng, Na,Zhang, Liyun,Wang, Yanfen,Ma, Yaoming,He, Honglin,Zhang, Li,Yu, Guirui,Li, Pan,Yu, Shi-Yong,Zhang, Fawei,Li, Hongqin,Chen, Shiping,Xin, Xiaoping,Ma, Yaoming,Ma, Yaoming,Ma, Mingguo,Zhang, Yu,Du, Mingyuan. 2018

[9]Spatial patterns and climate drivers of carbon fluxes in terrestrial ecosystems of China. Yu, Gui-Rui,Zhu, Xian-Jin,Fu, Yu-Ling,He, Hong-Lin,Wang, Qiu-Feng,Wen, Xue-Fa,Li, Xuan-Ran,Zhang, Lei-Ming,Zhang, Li,Su, Wen,Li, Sheng-Gong,Sun, Xiao-Min,Wang, Hui-Min,Shi, Pei-Li,Zhao, Feng-Hua,Zhu, Xian-Jin,Li, Xuan-Ran,Wang, Yan-Fen,Zhang, Yi-Ping,Zhang, Jun-Hui,Yan, Jun-Hua,Zhou, Guang-Sheng,Jia, Bing-Rui,Chen, Shi-Ping,Xiang, Wen-Hua,Li, Ying-Nian,Zhao, Liang,Xin, Xiao-Ping,Wang, Yu-Ying,Tong, Cheng-Li. 2013

[10]Geographical statistical assessments of carbon fluxes in terrestrial ecosystems of China: Results from upscaling network observations. Zhu, Xian-Jin,Yu, Gui-Rui,He, Hong-Lin,Wang, Qiu-Feng,Chen, Zhi,Gao, Yan-Ni,Wang, Hui-Min,Shi, Pei-Li,Zhao, Feng-Hua,Fu, Yu-Ling,Wen, Xue-Fa,Liu, Ying-Chun,Zhang, Lei-Ming,Zhang, Li,Su, Wen,Li, Sheng-Gong,Sun, Xiao-Min,Wang, Yan-Fen,Liu, Ying-Chun,Zhang, Yi-Ping,Zhang, Jun-Hui,Yan, Jun-Hua,Zhou, Guang-Sheng,Jia, Bing-Rui,Chen, Shi-Ping,Xiang, Wen-Hua,Li, Ying-Nian,Zhao, Liang,Xin, Xiao-Ping,Wang, Yu-Ying,Tong, Cheng-Li.

[11]iTRAQ Protein Profile Differential Analysis between Somatic Globular and Cotyledonary Embryos Reveals Stress, Hormone, and Respiration Involved in Increasing Plant let Regeneration of Gossypium hirsutum L.. Xiaoyang Ge,Chaojun Zhang,Qianhua Wang,Zuoren Yang,Ye Wang,Xueyan Zhang,Zhixia Wu,Yuxia Hou,Jiahe Wu,Fuguang Li.

[12]Optimization and evaluation of microencapsulated artificial diet for mass rearing the predatory ladybird Propylea japonica (Coleoptera: Coccinellidae). Tan, Xiao-Ling,Wang, Su,Zhang, Fan,Tan, Xiao-Ling,Zhao, Jing. 2015

[13]Effects of residual chlorine on the mortality, grazing and respiration of Labidocera euchaeta (Copepoda). Ma Zengling,Gu Xiaolian,Xu Zhaoli,Lin Hongping. 2011

[14]Short-Term Exposures to Reduced O-2 and Elevated CO2 Atmospheres Differently Affect the Respiratory Characteristics of Grapefruit and Mandarin. Shi, J. X.,Goren, Raphael,Goldschmidt, E. E.,Aharon, Z.,Porat, R.,Shi, J. X.. 2010

[15]The Arabidopsis J-protein AtDjB1 facilitates thermotolerance by protecting cells against heat-induced oxidative damage. Zhou, Wei,Zhou, Ting,Li, Mi-Xin,Zhao, Chun-Lan,Jia, Ning,Wang, Xing-Xing,Sun, Yong-Zhen,Xu, Meng,Li, Bing,Zhou, Wei,Li, Guo-Liang,Zhou, Ren-Gang,Zhou, Wei. 2012

[16]The complex character of photosynthesis in cucumber fruit. Sui, Xiaolei,Shan, Nan,Ren, Huazhong,Zhang, Zhenxian,Hu, Liping,Zhang, Cankui,Yu, Changqing,Turgeon, Robert. 2017

[17]Effects of salinity on ingestion, oxygen consumption and ammonium excretion rates of the sea cucumber Holothuria leucospilota. Yu, Zonghe,Hu, Chaoqun,Liu, Wenguang,Yu, Zonghe,Hu, Chaoqun,Liu, Wenguang,Qi, Zhanhui,Huang, Honghui.

[18]Primary Study on Mode of Action for Macrocyclic Fungicide Candidates (7B3, D1) against Rhizoctonia solani Kuhn. Yuan, Huizhu,Qi, Shuhua,Yan, Xiaojing,Liang, Xiaomei,Jin, Shuhui,Lv, Jinping,Yu, Chunxin,Qi, Wenyan,Wu, Jingping,Chen, Fuheng,Wang, Daoquan,Li, Baoju,Shi, Yanxia. 2010

[19]High hydrostatic pressure induced physiological changes and physical damages in asparagus spears. Yi, Jianyong,Feng, Haihong,Bi, Jinfeng,Zhou, Linyan,Zhou, Mo,Cao, Jiankang,Feng, Haihong,Li, Jun.

[20]Effect of Co-60-irradiation on postharvest quality and selected enzyme activities of Hypsizygus marmoreus fruit bodies. Xing, Zengtao,Wang, Yaosong,Feng, Zhiyong,Zhao, Zhihui,Liu, Xinghua.

作者其他论文 更多>>

微信小程序