Plant community and soil nutrient of alpine meadow in different degradation stages on the Tibetan Plateau, China.

doi:10.13287/j.1001-9332.202012.008

Abstract

Abstract: We examined soil physical and chemical properties and plant community characteristics of four Kobresia alpine meadows at different degradation stages in Damxung County, Lhasa City, Tibet Autonomous Region, China, with the method of spatial sequence instead of time succession. The results showed that soil organic carbon, total nitrogen, available phosphorus, available potassium, ammonium, nitrate, and water content showed a decreasing trend as the degree of soil degradation increased, while pH showed an increasing trend. Plant community height, richness, diversity index and evenness index of the moderately degraded meadow were the highest. Community coverage and total biomass were the largest in undegraded meadow and the smallest in the severely degraded meadow. As the degree of meadow degradation intensifies, the biomass and proportion of Cyperaceae decreased, the biomass and proportion of legumes and weeds increased, and the biomass and proportion of Gramineae first increased and then decreased. The aboveground biomass of meadow was significantly positively correlated with soil organic carbon content, total nitrogen content, total phosphorus content, and soil water content, and significantly negatively correlated with soil pH. With the vegetation degradation in meadow, soil degradation had worsened, which ultimately manifested as a significant decline in grassland productivity.

Key words: Qinghai-Tibet Plateau, plant community, meadow degradation, soil nutrient.

YANG Jun, LIU Qiu-rong, WANG Xiang-tao. Plant community and soil nutrient of alpine meadow in different degradation stages on the Tibetan Plateau, China.[J]. Chinese Journal of Applied Ecology, 2020, 31(12): 4067-4072.

References

[1] 张建贵, 王理德, 姚拓, 等. 东祁连山不同退化草地植物群落特征与土壤养分特性. 水土保持学报, 2019, 33(1): 227-233 [Zhang J-G, Wang L-D, Yao T, et al. Characteristics of plant community and soil nutrient of different degraded grasslands in East Qilian Mountains. Journal of Soil and Water Conservation, 2019, 33(1): 227-233]
[2] 干友民, 李志丹, 泽柏, 等. 川西北亚高山草地不同退化梯度草地土壤养分变化. 草业学报, 2005, 14(2): 38-42 [Gan Y-M, Li Z-D, Ze B, et al. The changes of grassland soil nutrition at different degradation subalpine meadow of north-west in Sichuan. Acta Prataculturae Sinica, 2005, 14(2): 38-42]
[3] 赵云. 不同退化程度高寒草甸草原土壤理化特征的研究. 硕士论文. 兰州: 甘肃农业大学, 2009 [Zhao Y. Study on the Soil Physical and Chemical Properties of Alpine Meadow under Different Degradation Degrees. PhD Thesis. Lanzhou: Gansu Agricultural University, 2009]
[4] Bellehumeur C, Legendre P. Multiscale sources of variation in ecological variables: Modeling spatial dispersion, elaborating sampling designs. Landscape Ecology, 1998, 13: 15-25
[5] Tilman D, Knops J, Wedin D. Productivity and sustaina-bility influenced by biodiversity in grassland ecosystems. Nature, 1996, 379: 718-720
[6] 曲国辉, 郭继勋. 松嫩平原不同演替阶段植物群落和土壤特性的关系. 草业学报, 2003, 12(1): 18-22 [Qu G-H, Guo J-X. The relationship between different plant communities and soil characteristics in Songnen grassland. Acta Prataculturae Sinica, 2003, 12(1): 18-22]
[7] 王婷, 花蕊, 楚彬, 等. 高寒草原退化对植物群落及土壤理化性质的影响. 草原与草坪, 2019, 39(4): 65-71 [Wang T, Hua R, Chu B, et al. Effects of alpine steppe degradation on plant communities and soil physical and chemical properties. Grassland and Turf, 2019, 39(4): 65-71]
[8] 张中华, 周华坤, 赵新全, 等. 青藏高原高寒草地生物多样性与生态系统功能的关系. 生物多样性, 2018, 26(2): 111-129 [Zhang Z-H, Zhou H-K, Zhao X-Q, et al. Relationship between biodiversity and ecosystem functioning in alpine meadows of the Qinghai-Tibet Plateau. Biodiversity Science, 2018, 26(2): 111-129]
[9] 孙鸿烈, 郑度, 姚檀栋, 等. 青藏高原国家生态安全屏障保护与建设. 地理学报, 2012, 67(1): 3-12 [Sun H-L, Zheng D, Yao T-D, et al. Protection and construction of the national ecological security shelter zone on Tibetan Plateau. Acta Geographica Sinica, 2012, 67(1): 3-12]
[10] 王婷, 杨思维, 花蕊, 等. 高寒草原植物功能群组成对退化程度的响应特征. 生态学报, 2020, 40(7): 1-9 [Wang T, Yang S-W, Hua R, et al. Response characteristics of composition of plant functional groups to various grassland degradation conditions in alpine steppe on the Tibetan Plateau, China. Acta Ecologica Sinica, 2020, 40(7): 1-9]
[11] 赵旺林, 罗天祥, 张林. 等. 气候变化与放牧对西藏典型高寒荒漠草地植被指数变化的相对影响. 生态学报, 2019, 39(22): 8494-8503 [Zhao W-L, Luo T-X, Zhang L, et al. Relative impact of climate change and grazing on DNVI variations in typical alpine desert grasslands in Tibet. Acta Ecologica Sinica, 2019, 39(22): 8494-8503]
[12] 宗宁, 石培礼, 蔣婧, 等. 短期氮素添加和模拟放牧对青藏高原高寒草甸生态系统呼吸的影响. 生态学报, 2013, 33(19): 6191-6201 [Zong N, Shi P-L, Jiang J, et al. Interactive effects of short-term nitrogen enrichment and simulated grazing on ecosystem respiration in an alpine meadow on the Tibetan Plateau. Acta Ecologica Sinica, 2013, 33(19): 6191-6201]
[13] Shi P, Sun X, Xu L, et al. Net ecosystem CO₂ exchange and controlling factors in a steppe: Kobresia meadow on the Tibetan Plateau. Science in China Series D: Earth Sciences, 2006, 49: 207-218
[14] Xue X, Guo J, Han B, et al. The effect of climate warming and permafrost thaw on desertification in the Qinghai-Tibetan Plateau. Geomorphology, 2009, 108: 182-190]
[15] 方精云, 王襄平, 沈泽昊, 等. 植物群落清查的主要内容、方法和技术规范. 生物多样性, 2009, 17(6): 533-548 [Fang J-Y, Wang X-P, Shen Z-H, et al. Methods and protocols for plant community inventory. Biodiversity Science, 2009, 17(6): 533-548]
[16] 白可喻, 戎郁萍, 杨云卉, 等. 北方农牧交错带草地生物多样性与草地生产力和土壤状况的关系. 生态学杂志, 2013, 32(1): 22-26 [Bai K-Y, Rong Y-P, Yang Y-H, et al. Relationships between grassland biodiversity and primary productivity and soil condition in farming-pastoral regions of northern China. Chinese Journal of Ecology, 2013, 32(1): 22-26]
[17] 鲍士旦. 土壤农化分析. 北京:中国农业出版社, 1981: 130-132 [Bao S-D. Analysis on Soil and Agrochemistry. Beijing: China Agriculture Press, 1981: 130-132]
[18] 陈灵芝, 马克平, 黄建辉, 等. 北京东灵山地区植物群落多样性的研究. Ⅱ. 丰富度、均匀度和物种多样性指数. 生态学报, 1995, 15(3): 268-277 [Chen L-Z, Ma K-P, Huang J-H, et al. Plant community diversity in Dongling Mountain, Beijing, China. Ⅱ. Species richness, evenness and species diversities. Acta Ecologica Sinica, 1995, 15(3): 268-277]
[19] 任继周. 草业科学研究方法. 北京: 中国农业出版社, 1998: 1-29 [Ren J-Z. Research Methods of Grass Science. Beijing: China Agriculture Press, 1998: 1-29]
[20] 星学军. 黄河源区高寒草甸不同退化阶段草地特征研究. 安徽农业科学, 2009, 37(22): 10578-10580 [Xing X-J. Different stages of degradation characteristics of alpine meadow in the Yellow River source area. Journal of Anhui Agricultural Sciences, 2009, 37(22): 10578-10580]
[21] 周华坤, 赵新全, 周立, 等. 青藏高原高寒草甸的植被退化与土壤退化特征研究. 草业学报, 2005, 14(3): 31-40 [Zhou H-K, Zhao X-Q, Zhou L, et al. A study on correlations between vegetation degradation and soil degradation in the alpine meadow of the Qinghai-Tibetan Plateau. Acta Prataculturae Sinica, 2005, 14(3): 31-40]
[22] 刘育红, 杨元武, 张英. 退化高寒草甸植物功能群与土壤因子关系的冗余分析. 生态与农村环境学报, 2018, 34(12): 1112-1121 [Li Y-H, Yang Y-W, Zhang Y. Redundancy analysis of the relationship between plant functional groups and soil factors in the degraded alpine meadow. Journal of Ecology and Rural Environment, 2018, 34(12): 1112-1121]
[23] 周丽, 张德罡, 贠旭江, 等. 退化高寒草甸植被与土壤特征. 草业科学, 2016, 33(21): 2196-2201 [Zhou L, Zhang D-G, Yun X-J, et al. The vegetation and soil characteristics of degraded alpine meadow. Practacultural Science, 2016, 33(21): 2196-2201]
[24] 周华坤, 赵新全, 温军, 等. 黄河源区高寒草原的植被退化与土壤退化特征. 草业学报, 2012, 21(5): 4-14 [Zhou H-K, Zhao X-Q, Wen J, et al. The characteristics of soil and vegetation of degenerated alpine steppe in the Yellow River Source Region. Acta Prata-culturae Sinica, 2012, 21(5): 4-14]
[25] 裴海昆. 不同放牧强度对土壤养分及质地的影响. 青海大学学报: 自然科学版, 2004, 22(4): 29-31 [Pei H-K. Effect of different grazing intensity on soil nutrient and texture. Journal of Qinghai University: Natural Sciences, 2004, 22(4): 29-31]
[26] 李学斌, 马琳, 杨新国, 等. 荒漠草原典型植物群落枯落物生态水文功能. 生态环境学报, 2011, 20(5): 834-838 [Li X-B, Ma L, Yang X-G, et al. Ecohydro-logy function of representative plant community litter in desert steppe. Ecology and Environmental Sciences, 2011, 20(5): 834-838]
[27] 王彦龙, 马玉寿, 施建军, 等. 黄河源区高寒草甸不同植被生物量及土壤养分状况研究. 草地学报, 2011, 19(1): 1-6 [Wang Y-L, Ma Y-S, Shi J-J, et al. Investigation of biomass and soil nutrition of different vegetation type at alpine meadow in Yellow River Headwater Area. Acta Agrestia Sinica, 2011, 19(1): 1-6]
[28] 李里, 刘伟. 退化草地植物功能群和物种丰富度与群落生产力关系的研究. 草地学报, 2011, 19(6): 917-921 [Li L, Liu W. Relationship between plant functional groups, species richness and community's productivity in degraded grassland. Acta Agrestia Sinica, 2011, 19(6): 917-921]
[29] Naeem S, Thompson LJ, Lawler SP, et al. Declining biodiversity can alter the performance of ecosystems. Nature, 1994, 368: 734-737
[30] 罗亚勇, 孟庆涛, 张静辉, 等. 青藏高原东缘高寒草甸退化过程中植物群落物种多样性、生产力与土壤特性的关系. 冰川冻土, 2014, 36(5): 1298-1305 [Luo Y-Y, Meng Q-T, Zhang J-H, et al. Species diversity and biomass in relation to soil properties of alpine meadows in the eastern Tibetan Plateau in different degradation stages. Journal of Glaciology and Geocryology, 2014, 36(5): 1298-1305]
[31] 王长庭, 龙瑞军, 丁路明. 高寒草甸不同草地类型功能群多样性及组成对植物群落生产力的影响. 生物多样性, 2004, 12(4): 403-409 [Wang C-T, Long R-J, Ding L-M. The effects of differences in functional group diversity and composition on plant community productivity in four types of alpine meadow communities. Biodiversity Science, 2004, 12(4): 403-409]
[32] 孙涛, 毕玉芬, 赵小社, 等. 围栏封育下山地灌草丛草地植被植物多样性与生物量的研究. 云南农业大学学报, 2007, 22(2): 246-250 [Sun T, Bi Y-F, Zhao X-S, et al. Diversity and biomass of shrub-grass vegetation of mountain grassland under enclosure. Journal of Yunnan Agricultural University, 2007, 22(2): 246-250]
[33] Mureithi SM. Chronosequence analysis of two enclosure management strategies in degraded rangeland of semi-arid Kenya. Agriculture, Ecosystems and Environment, 2009, 129: 332
[34] 李凯辉, 胡玉昆, 王鑫, 等. 不同海拔梯度高寒草地地上生物量与环境因子关系. 应用生态学报, 2007, 18(9): 2019-2024 [Li K-H, Hu Y-K, Wang X, et al. Relationships between aboveground biomass and environmental factors along an altitude gradient of alpine grassland. Chinese Journal of Applied Ecology, 2007, 18(9): 2019-2024]
[35] 王明君, 韩国栋, 赵萌莉, 等. 草甸草原不同放牧强度对土壤有机碳含量的影响. 草业科学, 2007, 24(10): 6-10 [Wang M-J, Han G-D, Zhao M-L, et al. The effects of different grazing intensity on soil organic carbon content in meadow steppe. Practacultural Science, 2007, 24(10): 6-10]