典型草地地上现存生物量资产动态

草业学报 ›› 2009, Vol. 18 ›› Issue (4): 1-8.

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典型草地地上现存生物量资产动态

李士美^1,2,谢高地¹,张彩霞^1,2

1.中国科学院地理科学与资源研究所,北京 100101;
2.中国科学院研究生院,北京 100049

收稿日期:2008-09-23 出版日期:2009-08-20 发布日期:2009-08-20
作者简介:李士美(1981-),男,山东菏泽人,在读博士。E-mail:lism.07b@igsnrr.ac.cn
基金资助:
国家自然科学基金项目(30770410)和国家重点基础研究发展计划(2009CB421106)资助。

Dynamics of the above-ground standing biomass assets of typical grassland

LI Shi-mei^1,2, XIE Gao-di¹, ZHANG Cai-xia^1,2

1.Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received:2008-09-23 Online:2009-08-20 Published:2009-08-20

摘要/Abstract

摘要： 生物量不仅是物质的载体,还是能量和价值的载体,也是评价生态系统结构和功能的重要指标。基于内蒙古站和海北站的已有动态监测成果,本研究分析了羊草+大针茅群落和矮嵩草草甸的地上现存生物量资产动态。羊草+大针茅群落和矮嵩草草甸的地上现存生物量动态曲线均呈单峰型,羊草+大针茅群落地上现存生物量的最大值为197.21 g/m²,矮嵩草草甸的地上现存生物量最大值为307.75 g/m²。羊草+大针茅群落和矮嵩草草甸的地上部分能量现存量动态曲线基本与地上现存生物量动态曲线一致,2个群落地上部分的能量现存量积累速率都与地上现存生物量积累速率呈显著的相关性。羊草+大针茅群落的地上部分能量现存量最大值为3 637.8 kJ/m²,矮嵩草草甸地上部分的能量现存量峰值为5 964.20 kJ/m²。羊草+大针茅群落和矮嵩草草甸的地上现存生物量价值曲线与地上现存生物量和能量现存量曲线存在显著差异。羊草地上现存生物量价值的最大值为584.95元/hm²,而大针茅的最大现存生物量价值为300.93元/hm²。矮嵩草草甸的地上现存生物量价值的峰值为2 066.84元/hm²。草地在生物量积累过程中,也形成了气体调节价值。羊草+大针茅群落释放O₂的最大价值为742.40元/hm²,固定CO₂的最大价值为1 484.89元/hm²。矮嵩草草甸群落释放O₂的最大价值量为1 158.52元/hm²,固定CO₂的最大价值为2 317.20元/hm²。

Abstract: Biomass is not only a carrier of material, but also a carrier of energy and value. It is an important index for evaluation of ecosystem structure and function. Based on existing observations at the Inner Mongolia Grassland Ecosystem Research Station and Haibei Alpine Meadow Ecosystem Research Station, the dynamics of the above-ground biomass assets of a Leymus chinensis+Stipa grandis community and a Kobresia humilis meadow were studied. The dynamic curves of above-ground biomass of these two communities were the single peak type, and the maximum above-ground standing biomass of the former was 197.21 g/m², while that of the latter was 307.75 g/m². The dynamic curves of above-ground standing energy of these two communities appeared the same shape as the above-ground biomass dynamic curves, whose peak value was 3 637.8 and 5 964.20 kJ/m², respectively. The accumulative rate of above-ground standing energy was positively correlated to accumulative rate of above-ground biomass. The biomass value curves of the L. chinensis+S. grandis community and K. humilis meadow were quite different from above-ground biomass curve and above-ground standing energy curves, and the peak values of above-ground biomass value of L. chinensis, S. grandis and K. humilis meadow were 584.95, 300.93 and 2 066.84 yuan/hm², respectively. During the process of biomass accumulation, grassland also produces a gas regulation value. The peak value for O₂ emission by the L. chinensis+S. grandis community and K. humilis meadow was 742.40 and 1 158.52 yuan/hm², respectively, while that of CO₂ fixation was 1 484.89 and 2 317.20 yuan/hm².

中图分类号:

李士美,谢高地,张彩霞. 典型草地地上现存生物量资产动态[J]. 草业学报, 2009, 18(4): 1-8.

LI Shi-mei, XIE Gao-di, ZHANG Cai-xia. Dynamics of the above-ground standing biomass assets of typical grassland[J]. Acta Prataculturae Sinica, 2009, 18(4): 1-8.

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典型草地地上现存生物量资产动态

Dynamics of the above-ground standing biomass assets of typical grassland

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