ABSTRACT
We evaluated the carbon (C) storage and soil CO2 efflux rates of red pine (Pinus densiflora S. et Z.) stands damaged by pine wilt disease (PWD) in Korea. Ten red pine plots at varying degrees of damage from PWD were established and grouped into five categories (very slightly, slightly, moderately, severely, and very severely damaged plots) based on differences in the tree density. The incidence of PWD was a major cause of C loss from forest ecosystems, but the magnitude of loss depended on the severity of disease damage. An exponential regression of the CO2 efflux rates against the corresponding soil temperature was highly significant (R(2)=0.82-0.95, P<0.01) for the varying degrees of damage from PWD. The rates of change in the CO2 efflux rates with temperature, as defined by the Q10 values, were generally lower in the slightly (2.94) versus the moderately (3.60) or severely (4.26) PWD-damaged stands. The cumulative soil CO2-C efflux rates for two years were significantly higher in the slightly (10.8 Mg Cha(-1) yr(-1)) or moderately (10.9 Mg Cha(-1) yr(-1)) versus the very severely (7.9 Mg Cha(-1) yr(-1)) PWD-damaged stands. The results indicate that the C storage and soil CO2 efflux rates in red pine stands can be impacted by the incidence of PWD, with a significant C reduction in the severely damaged stands.
ABSTRACT
OBJECTIVE: The purpose of this study is to report the effects of Chukyu (spine-healing) pharmacopuncture treatment in patients with lumbago and skelalgia. METHODS: This clinical study included 45 patients who were treated for lumbago and skelalgia at the Department of Acupuncture and Moxibusition, Dong-Eui University College of Oriental Medicine, from July 5, 2011, to January 31, 2012. Subjects were randomly divided into two groups: Chukyu (spinehealing)- pharmacopuncture-treated group (experimental group, n = 23) and normal saline-pharmacopuncture-treated group (control group, n = 22). Patients in the experimental group were treated with acupuncture and Chukyu (spine-healing) pharmacopuncture while those in the control group were treated with acupuncture and normal saline pharmacopuncture. To estimate the efficacy of controlling pain, we checked the visual analog scale [VAS], and to estimate the improvement of the symptoms, we evaluated by pain rating scale [PRS] and the Oswestry low-back pain disability index [ODI]. RESULTS: A comparison of the experimental and the control groups showed more significant improvements in the VAS, PRS, and ODI for the experimental group than for the control group. CONCLUSIONS: Chukyu (spine-healing) pharmacopuncture can be used for effective treatment in patients with lumbago and skelalgia.
ABSTRACT
The carbon (C) and nitrogen (N) status in forest ecosystems can change upon establishment of plantations because different tree species have different nutrient cycling mechanisms. This study was carried out to evaluate C and N status of litterfall, litter decomposition and soil in three adjacent plantations consisting of one deciduous (larch: Larix leptolepis) and two evergreen (red pine: Pinus densiflora; rigitaeda pine: P. rigida x P. taeda) species planted in the same year (1963). Both the pine plantations showed comparatively higher C input from needle litter but significantly lower N concentration and input than the larch plantation (P < 0.05). During the decomposition process, the deciduous larch needle litter showed low C concentration and C remaining in soil, but high N concentration and N remaining in soil compared to the two evergreen pine needle litters. However, the soil C and N concentration and their content at a soil depth of 0-10 cm were not affected significantly (P > 0.05) by the plantation type. These results demonstrate the existence of considerable variation in C and N status resulting from needle litter input and litter decomposition in these three plantations grown at sites with similar environmental conditions.
