The Influence of Long-term Simulating Warming to the Plant Community and Soil Nutrient of Alpine Meadow

doi:10.11733/j.issn.1007-0435.2015.04.001

Acta Agrestia Sinica ›› 2015, Vol. 23 ›› Issue (4): 665-671.DOI: 10.11733/j.issn.1007-0435.2015.04.001

The Influence of Long-term Simulating Warming to the Plant Community and Soil Nutrient of Alpine Meadow

ZHAO Yan-yan^1,4, ZHOU Hua-kun¹, YAO Bu-qing¹, WANG Wen-ying², DONG Shi-kui³, ZHAO Xin-quan¹

1. Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, Qinghai Province 810008, China;
2. Qinghai Normal University, Xining, Qinghai Province 810008, China;
3. Beijing Normal University, Beijing 100875;
4. Graduate University of Chinese Academy of Sciences, Beijing 100049

Received:2014-06-25 Revised:2014-08-31 Online:2015-08-15 Published:2015-08-26

长期增温对高寒草甸植物群落和土壤养分的影响

赵艳艳^1,4, 周华坤¹, 姚步青¹, 王文颖², 董世魁³, 赵新全¹

1. 中国科学院西北高原生物研究所, 青海西宁 810008;
2. 青海师范大学, 青海西宁 810008;
3. 北京师范大学, 北京 100875;
4. 中国科学院大学, 北京 100049

通讯作者: 周华坤
作者简介:赵艳艳(1989-),女,河南兰考人,硕士研究生,研究方向为高寒草地气候变化生态学,E-mail:zhaoyanyan2013@126.com
基金资助:
国家自然科学基金项目(31172247)(31201836)(31472135);青海省自然科学基金项目(2013-Z-916);中科院战略性先导科技专项子课题(XDA05070202);国家科技支撑课题专题(2011BAC09B06-02)(2014BAC05B03);青海省重点实验室发展专项资金计划(2013-Z-Y07)(2014-Z-Y01)资助

Abstract

Abstract:

The responses of plant community structure, aboveground biomass, belowground biomass, species diversity,soil nutrient content of alpine meadow and shrub to the continuous research warming of 16 years were studied by adopting the method of International Tundra Experiment (ITEX) in order to reveal the effects of long-term warming effects on community characteristics and soil nutrients. The results showed that compared with no warming plot, the community height of alpine meadow increased by 18.4%, the coverage reduced by 5%; the community height of alpine shrub increased by 42.8%, the coverage increased by 12.9%, the aboveground biomass of meadow community reduced by 23.6% and that of shrub community increased by 15.1%. The species number of alpine meadow reduced by 7%, while that of shrub reduced by 30%. Simulated warming caused available phosphorus and total phosphorus of meadow and shrub increased, the total potassium decreased, the changes of other nutrient contents were not consistent. Therefore, long-term warming changes the community structure and soil nutrient content of both alpine meadow and alpine shrub, but it is not exactly the same effect.

Key words: Alpine meadow, Alpine shrub, Open-top chamber, Warming, Community structure, Biomass, Soil nutrition

摘要：

采用国际冻原计划模拟增温效应的方法,研究了连续增温16年后高寒草甸和高寒灌丛的植物群落结构、地上地下生物量、物种多样性、土壤养分含量的响应,以期揭示长期增温对植物群落特征和土壤养分的影响。结果表明:与对照相比,长期增温使高寒草甸植物群落高度增加18.4%,盖度降低5%;灌丛群落高度增加42.8%,盖度增加12.9%。草甸群落地上生物量减少23.6%,0~10,10~20,20~30 cm的地下生物量分别减少22.2%,38.6%,52.1%;灌丛群落地上生物量增加15.1%,0~10,10~20,20~30 cm的地下生物量分别增加4.9%,17.5%,3.1%。草甸群落物种数减少7%,灌丛群落的物种数减少30%。长期增温使草甸和灌丛的土壤速效磷和全磷增加,而全钾降低,其他元素含量变化不一致。长期增温改变了高寒草甸和高寒灌丛的群落结构以及土壤养分含量,但对二者的影响不完全相同。

关键词: 高寒草甸, 高寒灌丛, 开顶式生长室, 增温, 群落结构, 生物量, 土壤养分

CLC Number:

S812

ZHAO Yan-yan, ZHOU Hua-kun, YAO Bu-qing, WANG Wen-ying, DONG Shi-kui, ZHAO Xin-quan. The Influence of Long-term Simulating Warming to the Plant Community and Soil Nutrient of Alpine Meadow[J]. Acta Agrestia Sinica, 2015, 23(4): 665-671.

赵艳艳, 周华坤, 姚步青, 王文颖, 董世魁, 赵新全. 长期增温对高寒草甸植物群落和土壤养分的影响[J]. 草地学报, 2015, 23(4): 665-671.

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The Influence of Long-term Simulating Warming to the Plant Community and Soil Nutrient of Alpine Meadow

长期增温对高寒草甸植物群落和土壤养分的影响

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