首页|山西4类主要天然草地的生物量空间分布特征

山西4类主要天然草地的生物量空间分布特征

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
通过对山西省暖性草丛类、暖性灌草丛类、温性草原类、温性山地草甸类4类主要天然草地的70个大样地进行调查,测定草地地上、地下生物量,分析4个海拔梯度,6个纬度梯度和5个经度梯度的生物量变化规律,旨在掌握山西天然草地生物量的空间分布特征,为充分了解山西草地生态系统及合理利用奠定基础.结果表明,山西省主要类型天然草地生物量随海拔的升高呈现出先升高后降低的趋势,海拔1200-1600 m的地下生物量和总生物量最高,分别为1412.86和2037.87 g·m-2;而地上活体生物量和凋落物生物量则是在<800 m的海拔处最高,分别为301.5和105.97 g·m-2.随纬度从南向北地下生物量和总生物量呈先增加后降低的趋势,且南边略高于北边(P>0.05).随经度从西向东地下生物量和总生物量呈先增加后降低再增加的趋势.不同草地类型地上生物量存在较大差异,暖性草丛类草地的地上活体生物量显著高于其余3类草地类型(P<0.05).暖性草丛类和温性山地草甸类草地的凋落物生物量显著高于暖性灌草丛类和温性草原类草地(P<0.05).
Spatial distribution characteristics of biomass in four main types of rangeland in Shanxi
This research mainly investigated 70 sample plots in the rangelands in Shanxi Province,which com-prises of four types of rangelands,namely,warm-temperate tussock,warm-temperate shrub tussock,temper-ate steppe and temperate montane meadow.We measured the above-ground biomass and underground biomass of rangelands,and analyzed the changes in biomass extracted from four altitude gradients,six latitude gradi-ents and five longitudinal gradients.From this regard,it is possible to understand the spatial distribution char-acteristics of biomass in Shanxi Province,lay a rational foundation for managing and protecting the Shanxi Province rangeland ecosystem.The results revealed an overall trend that the spatial distribution of biomass of rangelands enhanced at first,but then decreased with the increasing altitude,especially for the altitude range of 1200-1600 m,which incidentally recorded the highest underground biomass (1412.86 g·m-2 )and total bi-omass (2037.87 g·m-2 ).Shoot biomass (301.5 g·m-2 )and litter biomass (105.97 g·m-2 )were highest at altitudes below 800 m.With the latitude from south to north,the underground biomass and total biomass in-creased and then gradually decreased,while the south appeared to be slightly higher than the north (P >0.05). Underground biomass and total biomass in the southern and northern areas were significantly lower than that in the central region (P <0.05).However,with the longitude from west to east,the total underground biomass and total biomass first decreased,and then increased.Biomass in four types of rangeland varied significantly. Underground biomass in the warm-temperate tussock and other three rangelands were significantly (P <0.05) different.Litter biomass in warm-temperate tussock and temperate montane meadow were significantly differ-ent than the two other rangeland types.

warm-temperate shrub tussockwarm-temperate tussocktemperate steppetemperate montane meadowaltitudelongitude and latitudeshoot biomass

任敏、谭振宇、张智袁、高永强、赵祥、任国华、苏宗义

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山西农业大学动物科技学院,山西 太谷 030801

石河子大学师范学院,新疆 石河子 832003

石河子大学选培办,新疆 石河子 832003

暖性灌草丛 暖性草丛 温性草原 温性山地草甸 海拔 经纬度 活体生物量

中国科学院战略性先导科技专项国家自然科学基金山西省攻关项目

XDA050504033157245220140311013-3

2017

10.11829/j.issn.1001-0629.2017-0037

草业科学
中国草原学会 兰州大学草地农业科技学院

草业科学

CSTPCDCSCD
影响因子：0.854
ISSN：1001-0629
年,卷(期)：2017.34(11)
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