干旱区生态环境知识资源中心(Arid): 中国草地植被地上和地下生物量的关系分析

Arid

	中国草地植被地上和地下生物量的关系分析
其他题名	ABOVE- AND BELOW-GROUND BIOMASS RELATIONSHIPS IN CHINA’S GRASSLAND VEGETATION
	马安娜; 于贵瑞; 何念鹏; 王秋凤; 彭舜磊
来源期刊	第四纪研究
ISSN	1001-7410
出版年	2014
卷号	34 期号:4 页码:769-776
中文摘要	草地生物量大部分集中在地下,地下生物量对于估算草地生态系统碳储量及其碳固持效应都至关重要。由于草地地下生物量数据缺乏,利用地下与地上的根冠比(R/S)或者地下与地上生物量的关系对草地地下生物量进行估算,是目前最常用的方法。本文在综述草地生物量研究进展的同时,利用2004~2010年已发表文献的草地生物量数据对中国不同类型草地的根冠比进行了探索,同时分析了不同类型草地的地上与地下生物量的相关关系(高寒草甸、高寒草原、山地草甸、温性草甸草原、温性草原和温性荒漠草原)。分析结果表明:不同类型草地的根冠比存在显著差异(F = 3.524,p<0.01);进一步分析发现,山地草甸的根冠比显著低于其他类型草地(p<0.01),R/S较大的草地类型为温性草甸草原和温性荒漠草原,均值分别为7.0和6.8。对地上与地下生物量相关关系的分析表明,3种类型草地的地上与地下生物量存在幂函数相关关系,即高寒草原(R~2=0.67)>温性荒漠草原(R~2 = 0.36)>高寒草甸(R~2 = 0.13),其他3种类型草地几乎不存在地上与地下生物量的相关关系。这为以后估算地下生物量提供依据,即地下生物量估算应该综合考虑根冠比和地下与地上生物量关系。
英文摘要	Large grassland biomass stores in belowground,which plays a significant role in ecosystem carbon store and carbon sequestration. Due to the lack of below-ground biomass data, Root: shoot ratio ( R/S) or the relationship between above-ground biomass ( AGB) and below-ground biomass ( BGB ) have been used to estimate below-ground biomass. By available published grassland biomass data in 2004 ~2010,the paper explored the R/S and the relationship between above- and below-ground biomass in six grassland types, such as alpine meadow, alpine steppe, temperate desert steppe, temperate meadow steppe, montane meadow, temperate steppe. The results showed that R/S was significantly different in all grassland types ( F = 3. 542, p<0. 01) , and R/S of montane meadow was significantly different from other grassland types (p<0. 01). Temperate meadow steppe and temperate desert steppe had relatively higher R/S, the means of which were 7. 0 and 6. 8,respectively. There were evidence of positive effects of mean annual precipitation on AGB and BGB,and negative effects on R/S . The effects of mean annual temperature on AGB,BGB and R/S were different with that of mean annual precipitation. Although mean annual temperature had the positive effects on AGB,the effects on BGB and R/S were not significant. In order the better to analyze how to estimate BGB based on AGB,the paper explored the relationship between above-and below-ground biomass. The results showed that BGB was significantly positive correlated with AGB in alpine steppe (R~2 = 0. 67) >temperate desert steppe (R~2= 0. 36) > alpine meadow (R~2 = 0. 13 ) . The power function fitted well with the relationship between BGB and AGB for these three types of grassland. The relationship between above-and below-ground biomass was not found in other three types of grassland. It was evident that both R/S and the relationship between AGB and BGB must be considered together when BGB was estimated.
中文关键词	草地 ; 地上生物量 ; 地下生物量 ; 根冠比
英文关键词	grassland above-ground biomass below-ground biomass root: shoot ratio
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5189613
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231010
作者单位	中国科学院地理科学与资源研究所,中国生态系统研究网络(CERN)综合研究中心, 中国科学院生态系统网络观测与模拟重点实验室, 北京 100101, 中国
推荐引用方式 GB/T 7714	马安娜,于贵瑞,何念鹏,等. 中国草地植被地上和地下生物量的关系分析[J]. 中国科学院地理科学与资源研究所,2014,34(4):769-776.
APA	马安娜,于贵瑞,何念鹏,王秋凤,&彭舜磊.(2014).中国草地植被地上和地下生物量的关系分析.第四纪研究,34(4),769-776.
MLA	马安娜,et al."中国草地植被地上和地下生物量的关系分析".第四纪研究 34.4(2014):769-776.