不同利用方式对典型草原优势植物生物量的影响

doi:10.11686/cyxb2015384

草业学报 ›› 2016, Vol. 25 ›› Issue (6): 185-189.DOI: 10.11686/cyxb2015384

不同利用方式对典型草原优势植物生物量的影响

王珍¹, 胡静¹, 李西良¹, 阿拉木斯¹, 丁勇^{1*, *}, 侯向阳^{1*, *}, 于辉²

1.中国农业科学院草原研究所,内蒙古呼和浩特 010010;
2.鄂尔多斯生态环境职业学院,内蒙古鄂尔多斯 017010

收稿日期:2015-08-31 修回日期:2015-11-23 出版日期:2016-06-20 发布日期:2016-06-20
通讯作者: E-mail: dingyong228@126.com, houxy16@126.com
作者简介:王珍(1981-),男,内蒙古乌兰察布人,博士。 E-mail:wangzhen0318@126.com
基金资助:
973计划项目(2014CB138806),国家科技支撑项目(2014BAD12B02-4),内蒙古自然科学基金项目(2015ZD02,2015BS0330,2015BS0307),中央级公益性科研院所基本科研业务费(1610332015001)和国家自然基金面上项目(41471198)资助

Effects of land use on biomass of dominant plants in typical steppe

WANG Zhen¹, HU Jing¹, LI Xi-Liang¹, A-La-Mu-Si¹, DING Yong^{1, *}, HOU Xiang-Yang^{1, *}, YU Hui²

1.Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot 010010, China;
2.Ordos Ecological Environment Vocational College, Ordos 017010, China

Received:2015-08-31 Revised:2015-11-23 Online:2016-06-20 Published:2016-06-20

摘要/Abstract

摘要： 植物个体性状是表征草原生态系统功能和结构的指示器。本试验对内蒙古典型草原优势植物种(克氏针茅和糙隐子草)在不同利用方式的响应进行了研究,物种地上生物量和分配比例及地下生物量作为研究指标,分析对比自由放牧,1995年围封和2003年围封3种不同利用方式对克氏针茅和糙隐子草生物量的影响。研究结果表明,不同利用方式显著影响了两种优势植物种地上、地下生物量(P<0.05)。放牧显著降低了两种植物地上茎、叶和种子生物量(P<0.05),但显著增加了两种植物的地下根系生物量(P<0.05);围封区(1995和2003年围封)C₃/C₄比率显著高于自由放牧区。

Abstract: Plant characteristics can indicate the function and structure of grassland ecosystems. A field experiment was conducted to examine potential impacts of different land management systems on the dominant grassland species (Stipa krylovii and Cleistogenes squarrosa) in a typical steppe in Inner Mongolia, China. The characteristics of the two dominant species were described under three land management systems; continuous grazing, 1995 enclosure and 2003 enclosure (livestock excluded). Above-ground biomass, the distribution of above-ground biomass and below-ground biomass are reported. Land management significantly affected above- and below-ground biomass of both species (P<0.05). Compared with the enclosed areas (1995 and 2003), continuous grazing reduced total above-ground biomass, leaf biomass, stem biomass and seed biomass of both species (P<0.05) but increased below-ground biomass of both species (P<0.05). The C₃/C₄ ratio was higher in enclosed areas than under grazing (P<0.05).

王珍, 胡静, 李西良, 阿拉木斯, 丁勇, 侯向阳, 于辉. 不同利用方式对典型草原优势植物生物量的影响[J]. 草业学报, 2016, 25(6): 185-189.

WANG Zhen, HU Jing, LI Xi-Liang, A-La-Mu-Si, DING Yong, HOU Xiang-Yang, YU Hui. Effects of land use on biomass of dominant plants in typical steppe[J]. Acta Prataculturae Sinica, 2016, 25(6): 185-189.

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不同利用方式对典型草原优势植物生物量的影响

Effects of land use on biomass of dominant plants in typical steppe

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