乌海市几种蒺藜科灌木与土壤养分空间格局关系

doi:10.16843/j.sswc.2019.04.012

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Abstract [Background] Plants have a very important influence on soil resources and soil availability. It is very necessary to deeply understand the relationship between soil resources and plants and to determine their ecological functions in the ecosystem. Because of the bad climate and environment in Wuhai city in the arid area of western Inner Mongolia, the water and vegetation in this area are scarce. Therefore, it is necessary to deeply understand the relationship between plants and soil resources in this area, in order to provide a theoretical basis for future soil management and scientific research.[Methods] Nine vegetation communities including Zygophyllaceae shrubs around Wuhai city were found, they were community 1 Nitraria tangutorum + Artemisia desertorum, community 2 Tetraena mongolica, community 3 N. tangutorum + Sarcozygium xanthoxylon + Caragana sinica, community 4 S. xanthoxylon, community 5 N. tangutorum, community 6 T. mongolica + Reaumuria songarica + Salsola passerine, community 7 S. xanthoxylon + Caragana stenophylla, community 8 T. mongolica + Reaumuria songarica, and community 9 N. tangutorum + R. songarica + S. passerina. Three shrub plots were set up in each community to investigate the growth and distribution of shrubs. One of the most statistically significant plot was selected to establish the coordination system. Soil samples were collected at intervals of 1 m,and the contents of total nitrogen, total phosphorus and organic matter were determined. Finally, the IGPS(Integration of geostatistics) method combined with semi-variance model and point pattern model was used to analyze the relationship between soil nutrients and plants based on the distribution.[Results] 1) The results of semi-variance model and point pattern analysis were compared, and which showed that there was no correlation between total nitrogen and Zygophyllaceae shrubs. The aggregation scale between T. mongolica and total phosphorus(TP) was larger than the patch size of TP in the community 2 and 8, while there were no correlations between T. mongolica and total phosphorus in the community 2 and 6, and they were randomly distributed. N. tangutorum and S. xanthoxylon only showed an aggregation relationship with total phosphorus in community 3. The total phosphorus patch was affected by 2.5 N. tangutorum and 2.5 S. xanthoxylon plants. 2) There were organic matter patches larger than the research scale in the community 3, but they didn't correlate with Zygophyllaceae shrubs. The aggregation scale between S. xanthoxylon and organic matter was larger than the patch size of organic matter in the community 4, thus there were organic matter patches under the S. xanthoxylon canopy. The organic matter patches were all affected by many Tetraena mongolica in the community 2 and the N. tangutorum in the community 3, and the number of plants was 1.5 and 2.[Conclusions] IGPS method was used to quantify the spatial pattern relationship between Zygophyllaceae shrubs and soil nutrients in the surrounding areas of Wuhai city, and the result reveals the range of root or crown of the shrubs to a certain extent. In vegetation restoration, T. mongolica can be used to aggregate total phosphorus, and T. mongolica, S. xanthoxylon or N. tangutorum can be used to aggregate soil organic matter.

Key words： desertification combating IGPS spatial pattern Zygophyllaceae shrubs soil nutrients

Received: 07 December 2018

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154.1

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	TAN Jin
	YANG Jianying
	HOU Jian
	HU Ping

Cite this article:

TAN Jin,YANG Jianying,HOU Jian, et al. Relationship of spatial pattern between different Zygophyllaceae shrubs and soil nutrients around Wuhai city[J]. SSWC, 2019, 17(4): 93-103.

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http://journal12.magtechjournal.com/Jweb_stbc/EN/10.16843/j.sswc.2019.04.012 OR http://journal12.magtechjournal.com/Jweb_stbc/EN/Y2019/V17/I4/93

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