+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Carbon fixation of cyanobacterial–algal crusts after desert fixation and its implication to soil organic carbon accumulation in desert

, : Carbon fixation of cyanobacterial–algal crusts after desert fixation and its implication to soil organic carbon accumulation in desert. Land Degradation & Development aop(aop): 0-0

Enhanced carbon fixation in soil crusts may facilitate the restoration of damaged ecosystems, but this requires greater knowledge of carbon fixation patterns and mechanisms. We measured the net photosynthetic rate (Pn) and estimated annual carbon fixation (ACF) in cyanobacterial algal crusts after desert fixation in the Tengger Desert, northwestern China. The accumulated carbon fixation since the establishment of a restoration site was also calculated. In addition, stepwise regression analysis was used to study the relation between Pn and ACF and the physicochemical properties of crusts. showed that Pn was significantly higher at a more established 51-year-old restoration site (1 57? mol?m?2?s?1) than at a younger 15-year-old site ( 92? mol?m?2?s?1). The ACF also increased significantly with restoration time, but in two temporal phases, a slower ACF phase between 15 and 26?years of restoration ( 28 7?gC?m?2?y?1) and a high ACF phase after 43 51?years of restoration (3 3?gC?m?2?y?1). Stepwise regression analysis revealed that Pn was significantly correlated with chlorophyll a and crust cover, whereas ACF was only correlated with crust cover. Accumulated carbon fixation increased from 2 9?gC?m?2 after 15?years to 35 4?gC?m?2 at 51?years following establishment of the restoration site. The accumulated carbon fixation was positively correlated with soil organic carbon content. This study demonstrated that carbon fixation by cyanobacterial algal crusts increased progressively after desert fixation. Artificial measures, like the establishment of these restoration zones, can facilitate the colonization and development of biological soil crusts and are an effective biological tool for desert soil restoration.


DOI: 10.1002/ldr.1131

Other references

Gordon, Fj, 1981: Feed input-milk output relationships in the spring-calving dairy cow. Recent advances in animal nutrition: ub 1981) 15-31

Anonymous, 1989: Robertson Geologging. First Break 7(11): 454-455

Bastos, M.Gomes.; Bregman, R.; Kirsztajn, G.Mastroianni., 2011: Chronic kidney diseases: common and harmful, but also preventable and treatable. Chronic kidney disease (CKD) is a public health problem worldwide. In Brazil incidence and prevalence of end stage renal failure are increasing; prognosis is still poor and costs of disease treatment are very high. Regardless of the etiology, main...

Grdinic V.; Oresic L.S., 1986: Detection of cyanide by using loaded ion exchange resin as reagent. A new test for microdetection of cyanide by the resin spot technique is presented. Amberlite IRA-400 in palladium-PAR form is used as a suitable resin. The limit of identification for cyanide, and the tolerance limits for 15 anions are examined. T...

Desenclos, J.C.; Scaggs, M.; Wroten, J.E., 1992: Characteristics of mothers of live infants with congenital syphilis in Florida, 1987-1989. The incidence of congenital syphilis in Florida (USA) increased sixfold from 1985 through 1989, and more than 80% of the cases occurred in metropolitan areas of southern Florida. To characterize the population of pregnant women in Florida at high...

Rapsch, S.A.caso, C., 1984: Freeze etching morphology of the phycobiont plasmalemma in different environmental conditions. Anales de edafologia y agrobiologia (pub 1984) 42(7-8): 1195-1207

Szymanowski, M.; Estebanez, M.Salomon.; Padidela, R.; Han, B.; Mosinska, K.; Stevens, A.; Damaj, L.;, F.; Lascouts, E.; Reynaud, R.; Ferreira, C.; Bansept, C.; de Lonlay, P.; Saint-Martin, Cécile.; Dunne, M.J.; Banerjee, I.; Arnoux, J-Baptiste., 2016: mTOR Inhibitors for the Treatment of Severe Congenital Hyperinsulinism: Perspectives on Limited Therapeutic Success. Congenital hyperinsulinism (CHI) is the most common cause of persistent hypoglycemia in neonates and infants. In medically unresponsive CHI, subtotal pancreatectomy is performed to achieve euglycemia with consequent diabetes in later life. Sirolim...

Smith, A., 2001: Domestic violence laws: the voices of battered women. This article reports the findings from an exploratory survey of battered women's views about mandatory arrest, mandatory reporting by doctors and nurses, no-drop policies, confidentiality laws, privilege laws, court-victim advocate programs,...

Amadesi, P.; Rimondi, O.; Sifaki, H.; Turtura, M., 1960: Personnel dosimetry services of the Centro Dosimetrico di Bologna. Minerva Nucleare 4: 299-313

Schut, L.; Gilles, F.; Rorke, L.B., 1988: Posterior fossa mass and hydrocephalus in a 7-month-old boy. Pediatric Neuroscience 14(4): 212-215