Influencing Mechanisms of Several Shrubs on Soil Chemical Properties in Semiarid Horqin Sandy Land, China

Su, Yong Zhong; Zhao, Ha Lin; Li, Yu Lin; Cui, Jian Yuan

doi:10.1080/15324980490451339

Cited by 49 publications

(42 citation statements)

References 18 publications

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“…Su and Zhao (2003) proved that shrub canopy reduces transpiration and the establishment of Caragana microphylla in sand dune can increase soil water holding capacity. our results were in agreement with the findings of Su et al (2002) that the lower EC in the deeper soil layer reflected the accumulation and deposition of soluble salts in litters after the establishment of shrub, especially under the shrub canopies. the extensive secretion of organic acids and the release of Co 2 from litters, roots, and microorganisms can lead to a decrease of pH (Morel andHinsinger 1999, tornquist et al 1999).…”

Section: Resultssupporting

confidence: 83%

“…one is the physical way, the establishment of C. microphylla trapped windblown fine materials and dust which were rich in nutrients and deposited in the surface soils under their canopies (Su et al 2004). the other is chemical way.…”

Section: Resultsmentioning

confidence: 99%

“…Differences at P < 0.05 were considered significant. Enrichment ratio E = US/BS, US is the value of soil property under shrub and BS is between shrubs (Su et al 2002). the t-test was used to show enrichment effect (the difference between US and BS).…”

Section: Methodsmentioning

confidence: 99%

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Spatial distribution of soil nutrients after the establishment of sand-fixing shrubs on sand dune

Dong¹,

Zhang²,

Bao³

et al. 2009

PLANT SOIL ENVIRON

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Caragana microphylla lam., an indigenous leguminous shrub, was the dominant plant species to be used to control desertification in semi-arid Horqin Sandy land. to elucidate the cover effect of Caragana microphylla planted for 25 years on spatial distribution of soil nutrients including C, n, P and K, soil samples were taken from four soil depths (0-5 cm, 5-10 cm, 10-20 cm, and 20-40 cm) and three slope positions (windward slope, top slope, and leeward slope). Soil nutrients under shrubs (US) and between shrubs (BS) were compared to investigate the enrichment effect of plantation. The results showed that soil nutrients except total K were significantly higher in surface soil (0-5 cm) than in deeper layer soil (P < 0.01). Significant differences were found in the contents of total organic carbon, total nitrogen, total phosphorus, and total K at different slopes. The contents of total organic carbon and total nitrogen were higher in US than in BS (P < 0.05), but pH was lower (P < 0.01). our results indicated that the establishment of Caragana microphylla increased the accumulation of soil nutrients, and played an important role in restoring sand dune ecosystems.

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

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Spatial distribution of soil nutrients after the establishment of sand-fixing shrubs on sand dune

Dong¹,

Zhang²,

Bao³

et al. 2009

PLANT SOIL ENVIRON

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“…This creation of relatively large zones of microbial activity may create islands with improved conditions for further biological colonization, e.g., by plants and animals. Similar scenarios have been reported for semiarid and desert zones where isolated patches of shrub canopies represent areas of enhanced nutrient availability ("resource islands") (Herman et al 1995;Su et al 2004). In contrast to our original hypothesis, the microbial community composition and soil chemistry did not reveal obvious gradients on the studied scale.…”

Section: Resultscontrasting

confidence: 56%

Effects of pioneering plants on microbial structures and functions in a glacier forefield

et al. 2007

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This study investigates the small-scale spatial impact of the pioneering plant Leucanthemopsis alpina (L.) Heywood (L. alpina) on biological and chemical-physical parameters in an early successional stage of a glacier forefield. Considering the frequent occurrence of isolated patches of this pioneer plant in the forefield of the Dammaglacier (Switzerland), we hypothesized that the impact of the plant would establish gradients in nutrients, and microbial community structure and activity that may be of importance for the successional processes occurring in the forefield. Our results indicated that, in young successional soils, the rhizosphere effect of L. alpina plant patches can influence bacterial cell numbers and activities not only within the root zone, but even at 20 cm distance from the plant. Microbial cell counts, active cells, and saccharase, glucosidase, and acid phosphatase activities revealed significant distance effects, decreasing from soil directly underneath the plant to soils at 20 and 40 cm distance. Soil chemical and physical parameters did not exhibit significant trends. Fingerprinting analysis of amplified 16S rDNA fragments was used to characterize the microbial community. A selective effect of the plant on the microbial community could not be shown because the bacterial communities were similar regardless of distance to the plant.

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“…In arid and semi-arid landscapes, the architecture of trees, in addition to the typical sources of chemical solutes in canopies, generally increases ion concentrations in throughfall and stemflow, and consequently in the nutrient availability of soils, creating islands of soil moisture (Návar and Bryan 1990;Whitford et al 1997) and fertility (Ambatzis et al 2003;Breman and Kessler 1995;Jonsson et al 1999;Schade and Hobbie 2005;Su et al 2002;Whitford et al 1997) relative to areas outside the canopy, which are characterized as arid, infertile soils (Schlesinger and Pilmanis 1998). Therefore, additional sources of several chemical solutes are of paramount importance in places where they are not readily available (Fahey et al 1988) or where weathering processes are slow (Newman 1995).…”

mentioning

confidence: 99%

Gross precipitation and throughfall chemistry in legume species planted in Northeastern México

Návar¹,

González

González³

2008

Plant Soil

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Plant cover modifies throughfall chemistry, and the solute concentration is dependent on the plant species at any given site. The chemistry of gross rainfall and throughfall of four endemic species planted in northeastern Mexico was evaluated from March 1996 to March 1997. Chemical solutes measured included Ca, K, Mg, Na, Fe, Mn, Cu, and Zn. Dry deposition and canopy leaching fluxes were estimated following the canopy budget model. Variance analyses tested the statistical dependence of the total and net fluxes on the species and seasons. Regression analysis tested the dependence of chemical concentrations on rainfall depth and lag time between rains. A total of 52 rainfall events were recorded during the study period summing 523 mm. Significant differences were noted on the total and net fluxes between the plant species. For total flux, average throughfall (37.8 kg ha −1 year −1 ) almost doubled the flux of solutes compared to rainfall (24.1 kg ha −1 year −1 ). Pithecellobium ebano (Berland.) C.H. Mull. (43.3 kg ha −1 year −1 ), Acacia berlandieri Benth. (38.7 kg ha −1 year −1 ), and Pithecellobium pallens (Bent.) Standl. (38.4 kg ha −1year −1 ) recorded the highest total flux of solutes, and Acacia rigidula Benth. (30.9 kg ha −1 year −1 ) the smallest. Chemical solutes showed significant differences for total and net fluxes. Ca was the dominant cation with 48% and 52% of the total constituent flux for rainfall and throughfall, respectively. However, K, Mg and Cu approximately doubled in throughfall in contrast to gross rainfall. Species with the largest aboveground biomass had lower throughfall volumes (i.e., higher interception rates) but higher chemical solute inputs to the forest floor. Rainfall depth and lag time between rains explained part of the variation for most species, stressing the partial dependence of the washing effect and the amount of dry deposition on canopies. This research discusses the importance and the sources of incoming solutes on the studied plant species.

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Influencing Mechanisms of Several Shrubs on Soil Chemical Properties in Semiarid Horqin Sandy Land, China

Cited by 49 publications

References 18 publications

Spatial distribution of soil nutrients after the establishment of sand-fixing shrubs on sand dune

Spatial distribution of soil nutrients after the establishment of sand-fixing shrubs on sand dune

Effects of pioneering plants on microbial structures and functions in a glacier forefield

Gross precipitation and throughfall chemistry in legume species planted in Northeastern México

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