Influence of grazing on diversity of Dodonaea viscosa-Heteropogonetea contortus herb-shrub community
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摘要: 2005年，在云南元谋干热河谷采用样方调查法及生物多样性分析法研究了放牧干扰对明油子Dodonaea viscosa-扭黄茅Heteropogon contortus灌草丛生物多样性的影响。结果表明，无放牧干扰的明油子-扭黄茅灌草丛植物和节肢动物种类最丰富，节肢动物群落优势度最低，而多样性和均匀度最高，优势种为扁平虹臭蚁Iridomyrmex anceps；曾经过度放牧的明油子-扭黄茅灌草丛植物种类和节肢动物种类最贫乏，灌木-草本层节肢动物多样性最低；长期存在一定放牧干扰的明油子-扭黄茅灌草丛植物种类和节肢动物种类比较丰富，但节肢动物群落优势度最高而均匀度最低；经受或存在放牧干扰的明油子-扭黄茅灌草丛林下以刺吸类昆虫占优势，地表以迈氏小家蚁Monomorium mayri占优势。过度放牧导致明油子-扭黄茅灌草丛种类组成发生变化，生物多样性大大降低，群落趋于不稳定，栖息环境出现退化。放牧干扰对地表节肢动物群落的影响比对灌木-草本层节肢动物群落的影响突出。Abstract: Influence of grazing on biodiversity of Dodonaea viscosa-Heteropogonetea contortus scrub and grass clump in Yuanmou Arid-hot Valley was studied with sample plot investigation and biodiversity analysis. The results showed that the most abundant vegetation species and arthropod species were in the non-disturbed scrub and grass clump. Formica fusca was the dominant species in its arthropod community. And the highest diversity index and the evenness index were found, as well the lowest predominant index. The poorest vegetation species and arthropod species were in the overgrazed scrub and grass clump. The lowest diversity index was found in its arthropod community in the shrub-grass layer. More abundant vegetation species and arthropod species were in the scrub and grass clump with certain long-term grazing. The lowest evenness index and highest predominant index were found in its arthropod community. The piercing-sucking insects were predominant in the shrub-grass layer, and Monomorium mayri was predominant in the litter-layer in the grazed clumps. The species component changed in the overgrazed clump, biodiversity in the ecosystem depressed greatly, the arthropod community was instable, and the habitat degraded. Grazing had more effect on the biodiversity of the litter-layer arthropod communities than that of in the shrub-grass layer.
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Key words:
- forest ecology /
- hot-dry valley /
- grazing /
- biodiversity /
- vegetation /
- arthropod communities
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[1] 李巧.云南元谋干热河谷不同生态系统节肢动物群落比较研究[D].北京:北京林业大学, 2006. [2] 吴征镒,朱彦丞.云南植被[M].北京:科学出版社,1987. [3] 金振洲,欧晓昆,周跃.云南元谋干热河谷植被概况[J].植物生态学与地植物学学报, 1987, 11(4):308-317. [4] 周麟.云南元谋干热河谷植被恢复初探[J].西北植物学报, 1998, 18(3):750-756. [5] 李巧,陈又清,陈祯,等.元谋干热河谷直翅目多样性初步研究[J].浙江林学院学报, 2006,23(3):316-322. [6] 李巧,陈又清,李从富,等.元谋干热河谷象甲多样性初步研究[J].西北林学院学报,2006,21(2):102-106. [7] 李昆,罗长维,陈友,等.元谋干热河谷生态恢复区昆虫多样性研究[J].生态学杂志,2006,25(4):417-422. [8] 康乐.放牧干扰下的蝗虫-植物相互作用关系[J].生态学报,1995, 15(1):1-11. [9] KANG L, CHEN Y L. Grasshoppers under different grazing intensities[J]. Entomol Sinica, 2(3):265-281. [10] BURGER J C, REDAK R A, ALLEN E B,et al. Restoring Arthropod communities in coastal sage scrub[J]. Conserv Biol, 2003, 17:460-467. [11] SCHNELL M R, PIK A J, DANGERFIELD J M. Ant community succession within eucalypt plantations on used pasture and implications for taxonomic sufficiency in biomonitoring[J]. Aust Ecol, 2003, 28:553-565. [12] 王宗英,路有成,王慧芙.九华山土壤螨类的生态分布[J].生态学报, 1996,16(1):58-64. [13] 徐正会.西双版纳自然保护区蚁科昆虫生物多样性研究[M].昆明:云南科技出版社, 2002. [14] 马克平.生物群落多样性的测度方法[M]//中国科学院生物多样性委员会.生物多样性研究的原理和方法.北京:中国科学技术出版社, 1994:141-165. [15] 李巧.西双版纳自然保护区9种植被亚型象甲科多样性比较[J].生物多样性, 2006,13(1):73-78. [16] 李巧,陈又清,郭萧,等.节肢动物作为生物指示物对生态恢复的评价[J].中南林学院学报, 2006,26(3):117-122. [17] 张智英,李玉辉,柴冬梅,等.云南石林公园不同生境蚂蚁多样性研究[J].生物多样性,2005,13(4):357-362. [18] 高宝嘉,张执中,李震宇.封山育林对昆虫群落结构及多样性和稳定性的影响[M]//徐化成,郑均宝.封山育林研究.北京:中国林业出版社, 1994. [19] 李巧,陈又清,施永泽,等.金沙江干热河谷退化生态系统的昆虫多样性[J].南京林业大学学报:自然科学版, 2005, 29(5):37-40. -
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