+ Translate

Productivity in grasslands of the U.S.S.R

, : Productivity in grasslands of the U.S.S.R. Developments in agricultural and managed forest ecology4(24): 374-380

Productivity is characterized by three indices: the standing crop of the green phytomass, G, the standing crop of living roots, R, and the net primary production, NPP, which is the sum of above-ground, ANP, and below-ground, BNP, production. The mean value of Gmax (maximal standing crop during the season) increases from desert steppes to meadows and decreases again in wet meadows and grassy bogs. The mean value of R rises from desert steppes to true steppes, reduces in dry meadows and increases again in wet meadows and grassy bogs. Hence, the change in the standing crops of G and R under the influence of moisture is not linear. Maximal standing crop of G is observed in meadows while maximal standing crop of R is a characteristic feature of true steppes, wet meadows and grassy bogs. With increases in the degree of moistening in grasslands, the NPP value rises from 1000 to 4400 g.m2.yr-1, the BNP value increases from 690 to 3800 g.m2.yr-1. The relationship between NPP and the degree of moistening is practically linear.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002468391

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Silva, M. da G., 1983: Flora of Mozambique. 1. Cycadaceae. 2. Podocarpaceae. 3. Cupressaceae. Flora de Mocambique 1 Cycadaceae 2 Podocarpaceae 3 Cupressaceae: 45

Wagner E., 1968: On the genus calocoris hemiptera heteroptera miridae. Reichenbachia 10(18): 149-170

Baroon, Z; Dashti, R; Sawaya, Wn; Al-Aati, T; Dashti, B., 1996: Has food industry production in Kuwait been affected by the Gulf War?. Micro-level cross-sectional data were used to analyze the impact of the Gulf War on the production capabilities of the food processing industry in Kuwait. Using a nonparametric test, the Wilcoxon rank-sum statistical test, and a sample of 33 local...

Refn S., 1988: A simple synthesis of alpha d ribofuranosides. The glycosylation of various aglycones with 5-O-benzoyl-2,3-O-isopropylidine-.beta.-D-ribofuranosyl bromide (2) has been studied under different reaction conditions. It is possible to obtain high yields of .alpha.-linked ribofuranosides using meth...

Baxter, Keith A.; Church, John, 1996: Characterization of acid extrusion mechanisms in cultured fetal rat hippocampal neurones. We investigated the mechanisms regulating acid extrusion in cultured fetal rat hippocampal neurones loaded with 2',7'-bis-(2-carboxyethyl)-5-(and-6)-carboxyfluorescein. In the absence of HCO-3-, removal of external Na+ by substitution wi...

Hebets, Eileen A.; Chapman, Reginald F., 1999: Surviving the flood: plastron respiration in the non-tracheate arthropod Phrynus marginemaculatus (Amblypygi: Arachnida). Journal of Insect Physiology. 2000( ) January; 461: 13-19

Mogi Kiyoo, 1995: Long-term seismic activity in and around the Japanese Islands and the earthquake prediction program in Japan. Jishin Yochi Renrakukai Kaiho = Report of the Coordinating Committee for Earthquake Prediction 53: 676-681

Kataoka, Hiroyuki; Matsumura, Sayuri; Koizumi, Harumi; Makita, Masami, 1997: Rapid and simultaneous analysis of protein and non-protein amino acids as N(O,S)-isobutoxycarbonyl methyl ester derivatives by capillary gas chromatography. A simple and rapid gas chromatographic method is described for the simultaneous determination of protein and non-protein amino acids present in aqueous samples. The amino acids were converted into their N(O,S)-isobutoxycarbonyl methyl ester deriva...

Chen, J.H.; Bonavida, B., 1994: Involvement of apolipoprotein-1 in the NK-CMC reaction. FASEB Journal 8(4-5): A987

Esin, S.; Hodara, V.; Jeddi Tehrani, M.; Grunewald, J.; Svenberg, T.; Andersson, R.; Wigzell, H., 1996: Enhanced prevalence of T cell receptor V-beta-7 gene family expression in human intestine-associated T lymphocytes. Relative levels of expression of T cell receptor variable (V) beta and joining (J) beta gene segments were determined in T cells derived from intestinal biopsies of healthy mucosal areas, mesenteric lymph nodes and peripheral blood of the same ind...