短期围封对伊犁绢蒿荒漠群落特征 及植被多样性的影响

doi:10.6048/j.issn.1001-4330.2018.01.019

摘要/Abstract

摘要： 【目的】 研究伊犁绢蒿荒漠群落数量特征、多样性对短期围封的响应规律,为退化蒿类荒漠恢复与重建提供理论依据。【方法】 以伊犁绢蒿荒漠为研究对象,通过对群落盖度、高度、密度、生物量的野外测定,并计算群落Simpson(D)、Shannon-Wiener(H)、Pielou(J)及Margalef(P)指数,研究短期围封对荒漠群落特征及其多样性的影响。【结果】 围封后,群落高度、盖度和生物量分别显著增加了89.7%,153.9%,130.8%(P<0.05),而群落密度显著降低了19.8%(P<0.05)。(2)与围封区相比,放牧区的Simpson指数和Pielou指数显著高于围封区(P<0.05),Shannon-Wiener指数略高于围封区,而Margalef指数低于围封区,但差异不显著(P>0.05)。【结论】 围封已成为恢复及重建退化草地的最有效的措施,通过围封可以提高退化荒漠植被生物量,但植被多样性指数偏低,放牧降低丰富度指数。

关键词: 短期围封; 植被多样性; 群落特征; 蒿类荒漠

Abstract: 【Objective】 To reveal the community characteristics and vegetation diversity of Seriphidium transiliense desert response to short-term enclosure, and provide the theoretical basis for the restoration and reconstruction of degraded sagebrush desert. 【Method】 In this study, in order to discuss the effects of short-term enclosure on the characteristics and diversity of desert communities, the coverage, height, density and biomass of the community were studied by field monitoring method, and the diversity indexes of community vegetation were calculated.【Result】 (1)The community height, coverage and biomass increased significantly by 89.7%, 153.9% and 130.8% (P<0.05), while the community density decreased significantly by 19.8% (P<0.05). (2)Compared with the enclosed area, the Simpson index and the Pielou index of the grazing area were significantly higher than those in the enclosure area (P<0.05), the Shannon-Wiener index was slightly higher than that of the enclosure area, while the Margalef index was lower, but the difference was not significant (P>0.05).【Conclusion】 Enclosure has become the most effective measure to restore and reconstruct degraded grassland, and the biomass of grassland community can be increased by enclosure, but the species diversity index is low, and the grazing reduces richness index.

Key words: short-term; enclosure; grazing; vegetation diversity

中图分类号:

S188

阿依谢姆·约麦尔,董乙强,安沙舟,杨娇,阿依敏·波拉提, 李坤,关欣,孔晓晶. 短期围封对伊犁绢蒿荒漠群落特征及植被多样性的影响[J]. 新疆农业科学, 2018, 55(1): 175-182.

Ayixiemu Yuemaier,DONG Yi-qiang,AN Sha-zhou,YANG Jiao,Ayimin Bolati,LI Kun, GUAN Xin,KONG Xiao-jing. Effects of Short-term Enclosure on Community Characteristics of Seriphidium transiliense Desert and Diversity in Yili[J]. Xinjiang Agricultural Sciences, 2018, 55(1): 175-182.

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