Complex indicators reflecting soil functioning activity<sup>§</sup>

Kõlli, Raimo; Köster, T.; Rannik, Kaire; Tõnutare, Tõnu

doi:10.1002/jpln.200900031

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The data on the distribution of mineral soils are based on a large-scale ( 1:10 000) soil map (Kokk, 1995). The area covered by mineral soils is about 32 351 km" (Kolli et al, 2009). The distribution of mineral soil cover according to soil groups and land use is presented in Fig.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Stocks and annual fluxes of organic carbon in the mineral soil cover of Estonia

Kõlli

Tamm²,

Astover³

2011

Estonian J. Ecol.

View full text Add to dashboard Cite

Annual cycling of soil organic carbon (SOC) is the main driving force in the formation and functioning of soil cover. Therefore knowledge about it forms the scientific base for sustainable management and ecologically sound soil protection. Systematized parameters of the mean annual cycling of SOC by soils are analysed on the basis of the SOC stock densities (Mg ha ') of 16 mineral soil groups. The SOC stocks according to soil groups for the soil cover (solum) as a whole and for their epipedon were calculated on the basis of mean SOC densities and their distribution area of soil types. In the Estonian mineral soil cover (32 351 km^) a total of 323±46 Tg (lO'^ g) SOC is retained; 42% of this is sequestered into stabilized humus, 40% into unstable raw humus, and 18% into forest (grassland) floor and shallow peat layers. Of the total SOC stock, 75% is situated in biologically active epipedons and 25% in subsoil. The annual SOC inputs and outputs in natural soils, which were calculated on the basis of annual productivity, ranged from 0.2 to 3.6 Mg ha ' yr'. The influence of land management peculiarities on the annual cycling and balance of SOC has been demonstrated by our own experimental research, as well as by data published in the literature. In this work the pedo-ecological causal regularities of SOC sequestration in mineral soil cover (SOC concentration, soil thickness, moisture regime, texture, carbonate content), and agro-technological possibilities for its regulation (crops and their rotation, level of subsidization and soil amelioration) are discussed.

show abstract

Section: Methodsmentioning

confidence: 99%

“…In Estonian mineral soils a total of 323±46 Tg (lO'^ g) SOC is retained (Kolli et al, 2009). The distribution of total SOC stocks in mineral soil cover by land use, SOC quality, soil calcareousness, and vertical distribution is given in Fig.…”

Section: Pedo-ecological Causal Regularities Of Soc Sequestrationmentioning

confidence: 99%