Soil quality changes in land degradation as indicated by soil chemical, biochemical and microbiological properties in a karst area of southwest Guizhou, China

Zhang, Pingjiu; Li, Lianqing; Pan, Genxing; Ren, Jingchen

doi:10.1007/s00254-006-0356-4

Cited by 68 publications

(54 citation statements)

References 40 publications

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“…The microbial biomass C (MBC) of most of the top 10 cm soils in our study (except three sites with pH [ 7) was below 700 mg kg -1 (Fig. 3a); this is lower than the 1,103 ± 20 mg kg -1 determined in well-protected natural forest by Zhang et al (2006) and comparable with values from 270 to 640 mg kg -1 determined in shrubs by Piao et al (2000), both in the karst area of Guizhou Province. Zhang et al (2006) correlations between the contents of MBC and MBN and the content of total C and total N in our study (Table 2) implied the soil microorganisms were resource-limited.…”

Section: Effects Of Soil Chemical Properties On Soil Microbial Biomasmentioning

confidence: 57%

“…With regard to soil pH, numerous studies in the past have reported a range from near neutral to slightly alkaline in the karst region of southwest China (e.g. Piao et al 2000;Zhang et al 2006). The wide range, or actually the decline in soil pH from 7.9 to 4.1 in our study area, was supposed to have originated from the different intermixing ratios of the weathering residue of carbonate rock and sandy rock or shale components in different sites, and was also connected with severe leaching in the degraded forest under the strongly acid rain recorded in this area (Larssen et al 1998(Larssen et al , 2006.…”

Section: Variations In Basic Chemical Properties In Forest Soils Aftementioning

confidence: 98%

“…Yu et al 1998Yu et al , 2002Wang et al 2004a, b). Seldom can information be found about the forest habitat, especially soil quality and fertility (Long et al 2002;Cao et al 2003;Zhang et al 2006). Thus, it still remains unclear whether forest ecosystems can be successfully restored solely by natural processes such as mountain closure.…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Microbial biomass and activity along a natural pH gradient in forest soils in a karst region of the upper Yangtze River, China

Tian¹,

Haibara

Toda

et al. 2008

Journal of Forest Research

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Section: Effects Of Soil Chemical Properties On Soil Microbial Biomasmentioning

confidence: 57%

Section: Variations In Basic Chemical Properties In Forest Soils Aftementioning

confidence: 98%

See 1 more Smart Citation

Microbial biomass and activity along a natural pH gradient in forest soils in a karst region of the upper Yangtze River, China

Tian¹,

Haibara

Toda

et al. 2008

Journal of Forest Research

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“…The available P in the soil solution is present as orthophosphates, but the microbial P and organic-P are also stocks that can rapidly become available. Procedures for assessment of P availability have been well established (Pankhurst et al, 2003;Zhang et al, 2006a).…”

Section: Chemical Indicatorsmentioning

confidence: 99%

Soil health: looking for suitable indicators. What should be considered to assess the effects of use and management on soil health?

Cardoso¹,

Vasconcellos²,

Bini³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

408

220

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Soil Health refers to the ecological equilibrium and the functionality of a soil and its capacity to maintain a well balanced ecosystem with high biodiversity above and below surface, and productivity. To understand and use soil health as a tool for sustainability, physical, chemical, and biological properties must be employed to verify which respond to the soil use and management within a desired timescale. Attributes with a rapid response to natural or anthropogenic actions are considered good indicators of soil health. Among the physical indicators, soil texture, aggregation, moisture, porosity, and bulk density have been used, while among chemical indicators total C and N, mineral nutrients, organic matter, cation exchange capacity, among others are well established. However, most of them generally have a slow response, when compared to the biological ones, such as microbial biomass C and N, biodiversity, soil enzymes, soil respiration, etc., in addition to macro and mesofauna. Thus, a systemic approach based on different kinds of indicators (physical, chemical and biological) in assessing soil health would be safer than using only one kind of attribute. Many human activities have caused desertification, loss of biodiversity, disruption of aggregates, loss of organic matter and nutrients, among others. Today, it is imperious to maintain soil health and productivity with increasing emphasis on reforestation and recuperation of degraded areas through the use of organic amendments, reintroduction of plants, soil fauna and microorganisms. This review focused on an integrative view on indicators of soil health to be used as tools for prediction of sustainability in production systems.

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“…rocky desertification, soil erosion, drought and shortage of available water (Wang et al 2002, Zhang et al 2006a). In the process of rocky desertification, soil moisture plays a key role in the decline of soil functions including productivity and stability of mediating the nutrient and water flow .…”

mentioning

confidence: 99%

Spatial variability and patterns of surface soil moisture in a field plot of karst area in southwest China

Zhang¹,

Chen²,

Su³

et al. 2011

Plant Soil Environ.

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A field plot (100 m × 50 m) was chosen in a karst depression area of Huanjiang County, Guangxi Province of southwest China, with the aim of characterizing the variability and patterns of upper 15 cm soil moisture. Soil moisture content was measured at 5 m intervals by gravimetric method during dry and rainy seasons in 2005. Results indicated that the surface soil moisture presented a strong spatial dependence at the sampling times in the field scale. The variability of soil moisture by CV values and sill decreased with the increasing mean field soil moisture content either in dry or rainy season. In the dry season, mean soil moisture had a little influence on the sill owing to the previous tillage. But, in the rainy season, a heavy rain event could decrease the variability of soil moisture. The anisotropy characteristics were found that the variance was lower in 0° direction than that in 90° direction based on the northeast axis, and the range had opposite trend except for the sampling on March 15, 2005. The mosaic patterns of soil moisture exhibited the variability and its anisotropy visually. The rainfall (mean soil moisture), topography and micro-relief (rock outcrops) had important influence on the variability of soil moisture. To better understand the variability of soil moisture in the karst depression area, more soil samples should be required in the dry season and in a field with more rock outcrops.

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Soil quality changes in land degradation as indicated by soil chemical, biochemical and microbiological properties in a karst area of southwest Guizhou, China

Cited by 68 publications

References 40 publications

Microbial biomass and activity along a natural pH gradient in forest soils in a karst region of the upper Yangtze River, China

Microbial biomass and activity along a natural pH gradient in forest soils in a karst region of the upper Yangtze River, China

Soil health: looking for suitable indicators. What should be considered to assess the effects of use and management on soil health?

Spatial variability and patterns of surface soil moisture in a field plot of karst area in southwest China

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