Grazing Effects on Floristic Composition and Above Ground Plant Biomass of the Grasslands in the Northeastern Mongolian Steppes
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
We describe plant biomass in the grasslands of the Mongolian steppe obtained using a quadrat sampling technique. Four sites were studied in the northeastern Mongolia located between 47°12'N and 47°40'N and 102°22'E and 112°24'E, which were typical grasslands of the steppe. Biomass, carbon and nitrogen content were determined for the plants collected from the grazed and ungarazed stands. With the measurements above, we expect to obtain information on grazing effects on the grasslands and carbon sequestration of the grassland from the air. In order to estimate the biomass without destroying the stands, we derived an equation to describe the relationship between plant biomass and v-value using plant height and species coverage within the stand. Estimated plant biomass in the ungrazed and grazed stands ranged between 108.0 g m-2 and 13.4 g m-2 and between 97.5 g m-2 and 14.1 g m-2 in late June 2005, respectively. Litter in the ungrazed and grazed stands ranged from 330.3 g m-2 to 78.4 g m-2 and from 188.0 g m-2 to 20.3 g m-2, similarly. Average carbon and nitrogen contents in plants and in litter were 43.0% and 1.9% and 33.7% and 1.4%, respectively. In study sites at Baganuur, the carbon and nitrogen content of plant materials (plant plus litter) was 118.4 g m-2 and 4.7 g m-2 on 30 June 2005.
Abstract
We describe plant biomass in the grasslands of the Mongolian steppe obtained using a quadrat sampling technique. Four sites were studied in the northeastern Mongolia located between 47°12'N and 47°40'N and 102°22'E and 112°24'E, which were typical grasslands of the steppe. Biomass, carbon and nitrogen content were determined for the plants collected from the grazed and ungarazed stands. With the measurements above, we expect to obtain information on grazing effects on the grasslands and carbon sequestration of the grassland from the air. In order to estimate the biomass without destroying the stands, we derived an equation to describe the relationship between plant biomass and v-value using plant height and species coverage within the stand. Estimated plant biomass in the ungrazed and grazed stands ranged between 108.0 g m-2 and 13.4 g m-2 and between 97.5 g m-2 and 14.1 g m-2 in late June 2005, respectively. Litter in the ungrazed and grazed stands ranged from 330.3 g m-2 to 78.4 g m-2 and from 188.0 g m-2 to 20.3 g m-2, similarly. Average carbon and nitrogen contents in plants and in litter were 43.0% and 1.9% and 33.7% and 1.4%, respectively. In study sites at Baganuur, the carbon and nitrogen content of plant materials (plant plus litter) was 118.4 g m-2 and 4.7 g m-2 on 30 June 2005.
참고문헌 (26)
- Bai Y, "Positive linear relationship between productivity and diversity: evidence from the Eurasian Steppe", J Appl Ecol, 44, pp.1023~1034 (2007)
- Chen Z, "The characteristics of element chemistry of 122 plants on the Xilin river valley, Inner Mongolia", Research on Grassland Ecosystem, 1, pp.112~131 (1985)
- Cheng Y, "Phytosociological study on steppe vegetation in the vicinity of Kharkiv, Ukraine", Grassl Sci, 52, pp.61~71 (2006)
- Cheng Y, "Phytosociological study on steppe vegetation in east Kazakhstan", Grassl Sci, 53, pp.172~180 (2007)
- Davâzamc C, "Dynamik der Produktivität der unterirdischen Phytomase der Vegetationszonen der MVR. Arch. Naturschutz u", Landschaftsforsh, 25, pp.3~11 (1985)
- Gunin PD, "Vegetation Dynamics of Mongolia", pp.1~238 (1999), Kluwer Academic Publication
- Hayashi I, "Five years experiment on vegetation recovery of drought deciduous woodland in Kitui, Kenya", J Arid Environ, 34, pp.351~361 (1996)
- Hayashi I, "Plant ecology: Principals and Applications" (2003), Kokonshoin
- Hayashi I, "Phytomass production of grasslands in Xilin River Basin, Xilingol, Inner Mongolia, China. Bull. Sugadaira Montane", Res Cen, 9, pp.13~31 (1988)
- Hiblig W, "The effects of anthropogenic impact on plant and soil cover in Mongolia", Erforsh Boil Ress Mongolia, 9, pp.1693~1177 (2005)
- Institute of Meteorology and Hydrology of Mongolia, "Meteorological Records in Mongolia" (2005), Ulaanbaatl
- Jiang S, "A comparative study on production of Aneurolepidium chinense and Stipa grandis steppe communities at Baiinxile livestock farm in Inner Mongolia region", Research on Grassland Ecosystem, 1, pp.12~23 (1985)
- Kato T, "Carbon dioxide exchange between the atmosphere and alpine meadow ecosystem on the Quinghai-Tibetan Plateau, China", Agric For Meteorol, 124, pp.121~134 (2004)
- Kawada K, "Floristic composition and plant biomass production of steppe communities in the vicinity of Kharkiv, Ukraine", Grassl Sci, 51, pp.205~213 (2006)
- Kawamura K, "Estimation of aboveground biomass in Xilingole steppe, Inner Mongolia Using NOAA", NDVI, 2003, pp.46, 1~9
- Kawamura K, "Comparing MODIS vegetation indices with AVHRR NDVI for monitoring the forage quantity and quality in Inner Mongolian grassland, China", Grassl Sci, 51, pp.33~40 (2005)
- Li B, "The vegetation of the Xilin River Basin and its utilization", Research on Grassland Ecosystem, 3, pp.84~183 (1988)
- Nachinshonhor GU, "Productivity of Mongolian grassland and nomadism", Papers on Mongolian Studies in a series of Northeast Asian Studies, 통권 : 6, pp.59~67 (2002)
- Nakamura T, "Effect on grazing on the floristic composition of grassland in Bayinxile, Xilingole, Inner Mongolia", Grassl Sci, 45, pp.342~350 (2000)
- Numata M, "Structure of plant community. In: Theoretical consideration on plant ecology", pp.51~263 (1987), Tokaidaigaku-shuppankai
- Sasaki T, "Pattern of floristic composition under different grazing intensities in Bulgan, South Gobi, Mongolia", Grassl Sci, 51, pp.235~247 (2005)
- Wang Y, "Vegetation dynamics of grazing succession in the Stipa baicalensis steppe in Northeastern China", Vegetatio, 98, pp.83~95 (1992)
- Wuyunna, "Species diversity and phytomass of the grasslands in Inner Mongolia, China", Grassl Sci, 45, pp.140~148 (1999)
- Wuyunna, "Degeneration of steppe vegetation and the sandy desertification in Inner Mongolia, China", Vegetation Science News, 8, pp.17~25 (2004)
- Xie Y, "Vegetation of the Stipa loess steppe in Ningxia (northern China) in relation to grazing intensity", Grassl Sci, 53, pp.143~145 (2007)
- Yiruhan, "Changes in floristic composition of grasslands according to grazing intensity in Inner Mongolia, China", Grassl Sci, 47, pp.362~369 (2001)