Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe

doi:10.1016/S2095-3119(13)60658-9

Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (6): 1183-1192.DOI: 10.1016/S2095-3119(13)60658-9

Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe

Ubugunov Leonid, Rupyshev Yuriy, Ubugunov Vasiliy, HOU Xiang-yang, Vishnyakova Oxana, Lavrentieva Irina, Ubugunova Vera, REN Wei-bo , DING Yong

1、Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, Ulan-Ude 670047, Russian Federation
2、Grassland Research Institute, Chinese Academy of Agricultural Sciences, Hohhot 010010, P.R.China

收稿日期:2013-09-16 出版日期:2014-06-01 发布日期:2014-06-06
通讯作者: Ubugunov Leonid, Tel: +7-3012-434211, E-mail: l-ulze@mail.ru; Vishnyakova Oxana, Tel: +7-3012-419948, E-mail: ok_vish@mail.ru
作者简介:Ubugunov Leonid, Tel: +7-3012-434211, E-mail: l-ulze@mail.ru
基金资助:
This work is supported by the joint Russian-Chinese project of RFBR-NSFC (13-04-91181-ГФЕН_а), the International Science & Technology Cooperation Program of China (2013DFR30760; CR17-13) and the National Basic Research Program of China (2014CB138806). The study was supported by projects No. 4.13 (Structural and Dynamic Changes in Ecosystems in Southern Siberia and Complex Indication of the Processes of Desertification, Predictive Models and Monitoring Systems) and No. 30.21 (The Inventory of the Biological Diversity of Transbaikalia Subarid Regions) financed by the Russian Academy of Sciences.

Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe

Ubugunov Leonid, Rupyshev Yuriy, Ubugunov Vasiliy, HOU Xiang-yang, Vishnyakova Oxana, Lavrentieva Irina, Ubugunova Vera, REN Wei-bo , DING Yong

1、Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, Ulan-Ude 670047, Russian Federation
2、Grassland Research Institute, Chinese Academy of Agricultural Sciences, Hohhot 010010, P.R.China

Received:2013-09-16 Online:2014-06-01 Published:2014-06-06
Contact: Ubugunov Leonid, Tel: +7-3012-434211, E-mail: l-ulze@mail.ru; Vishnyakova Oxana, Tel: +7-3012-419948, E-mail: ok_vish@mail.ru
About author:Ubugunov Leonid, Tel: +7-3012-434211, E-mail: l-ulze@mail.ru
Supported by:
This work is supported by the joint Russian-Chinese project of RFBR-NSFC (13-04-91181-ГФЕН_а), the International Science & Technology Cooperation Program of China (2013DFR30760; CR17-13) and the National Basic Research Program of China (2014CB138806). The study was supported by projects No. 4.13 (Structural and Dynamic Changes in Ecosystems in Southern Siberia and Complex Indication of the Processes of Desertification, Predictive Models and Monitoring Systems) and No. 30.21 (The Inventory of the Biological Diversity of Transbaikalia Subarid Regions) financed by the Russian Academy of Sciences.

摘要/Abstract

摘要： Spatial and structural characteristics of plant communities in the steppe ecosystems of the Baikal region, Russian Federation have been researched in connection with climate change and grazing. The present study, based on a total of 15 typical steppe sampling plots, investigated above-ground biomass (AGB), below-ground biomass (BGB), total biomass (TB) and root:shoot ratios (R:S) and their relationships with climatic factors and grazing. All biomass components varied widely depending on the climatic parameters and the degree of grazing affected transformation. A strong negative correlation between mean annual temperature (MAT) and total plant biomass was revealed for all study area. Mean annual precipitation (MAP) significantly affected communities productivity increasing only in the south of the region. Due to the large and mountainous territory, the influence of latitude and elevation (mountain) factors on the components of the biomass were studied. Although all studied plant steppe communities were transformed by uncontrolled grazing, their productivity is significantly reduced only at plots with maximum digression. Vegetation shift is an indicator of climate change, as well as providing a diagnostic tool to build predictive models. Based on the complex index of effective precipitation, it was revealed that at the end of last century in the steppes of the Baikal region the structural and production processes will be affected by an arid climate trend.

关键词: steppe , productivity , climate , grazing , transformation , Baikal region

Abstract: Spatial and structural characteristics of plant communities in the steppe ecosystems of the Baikal region, Russian Federation have been researched in connection with climate change and grazing. The present study, based on a total of 15 typical steppe sampling plots, investigated above-ground biomass (AGB), below-ground biomass (BGB), total biomass (TB) and root:shoot ratios (R:S) and their relationships with climatic factors and grazing. All biomass components varied widely depending on the climatic parameters and the degree of grazing affected transformation. A strong negative correlation between mean annual temperature (MAT) and total plant biomass was revealed for all study area. Mean annual precipitation (MAP) significantly affected communities productivity increasing only in the south of the region. Due to the large and mountainous territory, the influence of latitude and elevation (mountain) factors on the components of the biomass were studied. Although all studied plant steppe communities were transformed by uncontrolled grazing, their productivity is significantly reduced only at plots with maximum digression. Vegetation shift is an indicator of climate change, as well as providing a diagnostic tool to build predictive models. Based on the complex index of effective precipitation, it was revealed that at the end of last century in the steppes of the Baikal region the structural and production processes will be affected by an arid climate trend.

Key words: steppe , productivity , climate , grazing , transformation , Baikal region

Ubugunov Leonid, Rupyshev Yuriy, Ubugunov Vasiliy, HOU Xiang-yang, Vishnyakova Oxana, Lavrentieva Irina, Ubugunova Vera, REN Wei-bo , DING Yong. Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe[J]. Journal of Integrative Agriculture, 2014, 13(6): 1183-1192.

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Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe

Impact of Climate and Grazing on Biomass Components of Eastern Russia Typical Steppe

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