干旱区生态环境知识资源中心(Arid): 农牧交错带半干旱草地生态系统土壤呼吸对短期不同放牧强度的响应

Arid

	农牧交错带半干旱草地生态系统土壤呼吸对短期不同放牧强度的响应
其他题名	Response of ecosystem soil respiration in semi-arid grassland to short-term grazing intensity in Agro-pastoral ecotone
	董斅晓 1; 薄元超 1; 张晓琳 1; 贺婷婷 2; 王常慧 3; 董宽虎 1
来源期刊	草地学报
ISSN	1007-0435
出版年	2019
卷号	27 期号:1 页码:53-62
中文摘要	放牧对生态脆弱区的半干旱草地生态系统的群落结构以及生产力的改变更加敏感。通过研究土壤呼吸各组分在不同放牧强度下的变化,得到最适宜的放牧强度的固碳效应。本研究以位于山西省右玉县农牧交错带的半干旱草地生态系统为研究对象,探究短期不同放牧强度对土壤呼吸的影响。2017-2018年每年5月开始进行不同强度的放牧实验,共设置了4个放牧强度:不放牧(对照)、轻度放牧、中度放牧和重度放牧(分别表示为G0,G1,G2和G3)。采用静态箱法测定不同处理的土壤总呼吸(Soil total respiration,SRtot)和土壤异养呼吸(Soil heterotrophic respiration,SRh),同时监测10 cm表层土壤温度和含水量。实验结果表明:短期不同放牧强度对农牧交错带半干旱草地SR_(tot)、SR_h和土壤自养呼吸(Soil autotrophic respiration,SR_a)在生长季均呈单峰型变化趋势,各放牧强度均使SR_(tot)和SR_h有所降低。土壤温度(10 cm)与SR_(tot)和SR_h呈显著正相关(r2>0.1,P <0.05)。
英文摘要	Grazing is more sensitive to the change of community structure and productivity of semi-arid grassland ecosystem in fragile ecological areas.The carbon sequestration effect of the most suitable grazing intensity was obtained by studying the changes of soil respiration components under different grazing intensities. In this study,the semi-arid grassland ecosystem located in the ecotone of agriculture and animal husbandry in Youyu County,Shanxi Province,was taken as the research object.To explore the effects of different grazing intensities on soil respiration in semi-arid grassland ecosystem in a short period of time,grazing experiments with different intensities began in May 2017 and 2018.There were 4 grazing intensities, ungrazing(control),light grazing,moderate grazing and heavy grazing(expressed as G_0,G_1,G_2 and G_3,respectively). The soil total respiration(SRtot)and soil heterotrophic respiration(SRh)under different treatments were measured by static box method.The temperature and water content of 10 cm surface soil was monitored at the same time.The results showed that the seasonal dynamics of SR_(tot),S_R hand Soil autotrophic respiration(SR_a)in semi-arid grassland in the agricultural and pastoral ecotone showed a single peak variation trend with different grazing intensities,and all grazing intensities reduced SRtotand SRh. The soil temperature(10 cm)was positively correlated with SR_(tot)and SR_h(r2>0.1,P <0.05).
中文关键词	放牧强度 ; 农牧交错带 ; 半干旱草地 ; 土壤呼吸 ; 土壤异养呼吸 ; 土壤自养呼吸
英文关键词	Grazing intensity agro-pastoral ecotone semi-arid grassland soil respiration soil heterotrophic respiration soil autotrophic respiration
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6470342
来源机构	中国科学院植物研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238940
作者单位	1.山西农业大学动物科技学院, 太谷, 山西 030801, 中国; 2.右玉县畜牧局, 右玉, 山西 037200, 中国; 3.中国科学院植物研究所, 植被与环境变化国家重点实验室, 北京 100093, 中国
推荐引用方式 GB/T 7714	董斅晓,薄元超,张晓琳,等. 农牧交错带半干旱草地生态系统土壤呼吸对短期不同放牧强度的响应[J]. 中国科学院植物研究所,2019,27(1):53-62.
APA	董斅晓,薄元超,张晓琳,贺婷婷,王常慧,&董宽虎.(2019).农牧交错带半干旱草地生态系统土壤呼吸对短期不同放牧强度的响应.草地学报,27(1),53-62.
MLA	董斅晓,et al."农牧交错带半干旱草地生态系统土壤呼吸对短期不同放牧强度的响应".草地学报 27.1(2019):53-62.