Community Composition and Soil Properties of Different Grassland Types on the Tala Shoal in Gonghe Basin

WANG Xue-quan; YIN Shu-le; YANG Zhan-wu; LU Qi; YANG Heng-hua; CHEN Qi

There exist three most representative plant communities within the Tala Shoal in Gonghe Basin, including Stipa breviflora and Orinus kokonorica grassland, Achnatherum splendens grassland, and Caragana tibetica shrubland. Field data of plant and soil investigation from 19 samples plots in 95 quadrats (1 m×1 m) was used to explore the community composition, soil texture and nutrient status of the three communities. Up to 32 plant species in total were found in the sample plot, with 11, 22 and 21 plant species in C. tibetica shrubland, A. splendens and S. breviflora grasslands respectively. The plant biomass and coverage was higher in the A. splendens grassland than in the O. kokonorica grassland, and the C. tibetica shrubland had the lowest plant biomass and coverage among the three communities, with O. kokonorica the dominant plants. The soil content to 20 cm in different particle-size separates was dominated by the fine sand. The soil nutrient concentrations of P, K, and N were higher in the C. tibetica than in the other two communities as the result of accumulation phenomenon, while the soil EC in the A. splendens grassland was 0.26 ms·cm-1 with poor nutrient and weak salinization. Plant communities and their soil adaptation may offer guideline for the rehabilitation of degradation grassland.

1. Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China

2. Qinghai Forestry Research Institute, Xining 810016, Qinghai, China

3. Qinghai Gonghe Desert Ecosystem Research Station, Gonghe 813005, Qinghai, China

Received Date: 2014-06-09

Abstract: There exist three most representative plant communities within the Tala Shoal in Gonghe Basin, including Stipa breviflora and Orinus kokonorica grassland, Achnatherum splendens grassland, and Caragana tibetica shrubland. Field data of plant and soil investigation from 19 samples plots in 95 quadrats (1 m×1 m) was used to explore the community composition, soil texture and nutrient status of the three communities. Up to 32 plant species in total were found in the sample plot, with 11, 22 and 21 plant species in C. tibetica shrubland, A. splendens and S. breviflora grasslands respectively. The plant biomass and coverage was higher in the A. splendens grassland than in the O. kokonorica grassland, and the C. tibetica shrubland had the lowest plant biomass and coverage among the three communities, with O. kokonorica the dominant plants. The soil content to 20 cm in different particle-size separates was dominated by the fine sand. The soil nutrient concentrations of P, K, and N were higher in the C. tibetica than in the other two communities as the result of accumulation phenomenon, while the soil EC in the A. splendens grassland was 0.26 ms·cm-1 with poor nutrient and weak salinization. Plant communities and their soil adaptation may offer guideline for the rehabilitation of degradation grassland.

HTML

Reference (20)

[1]	郭连云, 熊联胜, 王万满.近50年气候变化对塔拉滩草地荒漠化的影响[J].水土保持研究, 2008, 15(6):57-63.
[2]	Bilotta G S, Brazier R E, Haygarth P M. The impacts of grazing animals on the quality of soils, vegetation, and surface waters in intensively managed grasslands[J].Advances in Agronomy, 2007, 94(2): 237-280.
[3]	冯益明, 吴波, 卢琦, 等.青藏高原高寒沙区景观格局变化分析—以青海贵南县为例[J].林业科学研究, 2008, 21(2): 182-187.
[4]	Moyo B, Dube S, Lesol M, et al. Herbaceous biomass, species composition and soil properties of key grazing patches in coastal forest thornveld and two grassland types of the Eastern Cape province, South Africa[J]. African Journal of Range and Forage Science, 2010, 27(3):151-162.
[5]	Hobbie S E.Effects of plant species on nutrient cycling[J].Trends in Ecology & Evolution, 1992, 7(10): 336-339.
[6]	李新荣, 谭会娟, 何明珠, 等.阿拉善高原灌木种的丰富度和多度格局对环境因子变化的响应:极端干旱荒漠地区灌木多样性保育的前提[J].中国科学D辑:地球科学, 2009, 39(4):504-515.
[7]	Sternberg M, Gutman M, Perevolotsky A, et al.Vegetation response to grazing management in a Mediterranean herbaceous community: a functional group approach[J].Journal of Applied Ecology, 2000, 37(2):224-237.
[8]	Shaun R, Gregory P, Izak P. Spatial patterns in the effects of fire on savanna vegetation three-dimensional structure[J].Ecological Applications, 2012, 22(4):2110-2121.
[9]	Thomas J. Examination of interaction effects of multiple disturbances on an arid plant community[J].The Southwestern Naturalist, 2003, 48(4):481-490.
[10]	魏婷婷, 杨占武, 李秀梅, 等.共和盆地沙质荒漠化过程植被群落特征变化[J].生态环境学报, 2011, 20(12):1788-1793.
[11]	王立亚.青海省海南州地区草地封育后植被变化特征分析[J].安徽农业科学, 2008, 36(28):12149-12150.
[12]	刘君梅, 王学全, 杨恒华, 等.高寒沙区植被恢复过程中表层土壤因子的变化规律[J].东北林业大学学报, 2011, 39(8): 32-37.
[13]	李亚娟, 曹广民, 龙瑞军.不同草地利用方式对土壤有机碳、全氮和全磷的影响[J].草业和草坪, 2012, 32(5):26-29.
[14]	Li Wei, Huang Hai-Zhou, Zhang Zhi-Nan, et al. Effects of grazing on the soil properties and C and N storage in relation to biomass allocation in an alpine meadow[J].Journal of Soil Science and Plant Nutrition, 2011, 11(4):27-39.
[15]	张鹏莉, 陈俊, 崔树娟, 等.禁牧条件下不同类型草地群落结构特征[J].生态学报, 2013, 33(2):425-434.
[16]	焦菊英, 焦峰, 温仲明.黄土丘陵沟壑区不同恢复方式下植物群落的土壤水分和养分特征[J].植物营养与肥料学报, 2006, 12(5):667-674.
[17]	青海省农业资源区划办公室.青海土壤[M].北京:中国农业出版社, 1997:89-92.
[18]	全国农业技术推广服务中心.土壤分析技术规范[M].北京:中国农业出版社, 2009:93.
[19]	董鸣.陆地生物群落调查观测与分析[M].北京:中国标准出版社, 1997:27-39.
[20]	Raunkiaer C. The Life Forms of Plants and Statistical Plant Geography [M]. Oxford: Oxford University Press, 1932:1-8.

Community Composition and Soil Properties of Different Grassland Types on the Tala Shoal in Gonghe Basin

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views