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Effect of manipulating animal stocking rate on the carbon storage capacity in a degraded desert steppe

文献类型： 外文期刊

作者： Wang, Zhongwu 1 ; Han, Guodong 1 ; Hao, Xiying 2 ; Zhao, Mengli 1 ; Ding, Haijun 1 ; Li, Zhiguo 1 ; Wang, Jing 1 ; Hamilt 1 ;

作者机构： 1.Inner Mongolia Agr Univ, Coll Ecol & Environm Sci, Dept Grassland Sci, Hohhot 010018, Inner Mongolia, Peoples R China

2.Agr & Agri Food Canada, Lethbridge Res Ctr, POB 3000, Lethbridge, AB T1J 4B1, Canada

3.SRUC, Environm & Countryside Dept, Kings Bldg, Edinburgh EH9 3JG, Midlothian, Scotland

4.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010010, Inner Mongolia, Peoples R China

5.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot

关键词： Carbon sequestration;Global change;Range management;Sheep grazing

期刊名称：ECOLOGICAL RESEARCH （ 影响因子：1.917； 五年影响因子：2.095 ）

ISSN： 0912-3814

年卷期： 2017 年 32 卷 6 期

页码：

收录情况： SCI

摘要： Managing the stocking rate is considered one of the most important practices influencing carbon storage on rangeland. The effects of four stocking rates consisting of a non-grazed control (CK), light (0.15 sheep ha(-1) month(-1)), moderate (0.30 sheep ha(-1) month(-1)) and heavy (0.45 sheep ha(-1) month(-1)) were evaluated for impacts on carbon storage taking place on the Desert Steppe of Inner Mongolia, China. Carbon storage was measure in aboveground vegetation, roots and soil in August of 2009, 2011 and 2013. Both aboveground biomass (AGB) and below-ground biomass (BGB) increased significantly as stocking rate decreased. Stocking rate also had a significant effect on both the aboveground and below-ground carbon storage in plant biomass, but had no effect on the soil carbon. Compared to the heavy stocking rate typically practiced by local herders, lower stocking rates increased the total above- and below-ground biomass carbon storage by >= 7%. Over the 3 year study, compared to the moderate stocking rate, the rate of carbon sequestration with a light stocking rate was 0.7 Mg C ha(-1) year(-1). Thus, reducing stocking rate has the potential to increase C sequestration and storage, as well as maintaining animal numbers at a more sustainable level suitable for the Desert Steppe ecosystem.

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[1]Effects of Stocking Rate on the Variability of Peak Standing Crop in a Desert Steppe of Eurasia Grassland. Wang, Zhongwu,Han, Guodong,Zhao, Mengli,Ding, Haijun,Zhang, Xinjie,Wang, Xiaoliang,Jiao, Shuying,Ayers, Eldon L.,Willms, Walter D.,Havsatad, Kris,Lata, A.,Liu, Yongzhi.

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