Assessing Relations between Cultural Ecosystem Services, Physical Landscape Features and Accessibility in Central-Eastern Europe: A PPGIS Empirical Study from Hungary

Despite the growing quantity of ecosystem-services-related research, there is still a lack of deeper understanding on cultural ecosystem services (CES). This is mainly due to the perception of CES, which can vary by geographic location and population. In this study, we present a Public Participation Geographic Information System (PPGIS) method in a Hungarian microregion. Our goal is to increase understanding on how cultural services are perceived in this geographical context and level, and how this relative importance is related to biophysical landscape features. We also consider the influence of accessibility on the perceived landscape and compare our findings with the results of other studies with different sociocultural backgrounds. The research consists of participatory mapping with 184 persons that were digitized and analyzed with GIS and statistical software. During the analysis, we identified CES hotspots and compared CES with landscape features, as well as CES perception with accessibility. Our results showed positive correlation of CES with land covers related to built-up areas, as well as aesthetic and recreational services with water bodies. Compared to other studies, we found different spatial relationships in the case of spiritual services, and higher importance of agricultural land covers during the CES perception, thanks to the Central-Eastern European (CEE) sociocultural background. Our study highlights the effect of accessibility on CES perception; nevertheless, these relationships varied by different infrastructural elements. We conclude by discussing the implications and limitations of our study and encouraging future landscape research to apply the PPGIS method in this geographical context.

NOCTURNAL SURFACE INVERSIONS IN CENTRAL EASTERN INDIA

Monitoring of nocturnal su rface inversions in the vicinit y of Steel Authority of Ind ia lid. Steelplants at Bhila i. Bokaro. Durgapur and Rourk-cia in central eas tern Ind ia. for 40 niahu in January. February andMarch 1990. indi cated that surface inversions developed every night when weathe r conditions were favourable (clea rskies and light winds) , Th e ceiling heiaht of surface inversions eenerally increased as the niah t progressed. withrouahly two-th irds hiefler th an 100 m and a maximum record ed heigh t of 520 m. Th e maximum recorded surfaceinversio n strt"ngth (temperature difference between th e surface and the ceilingjwas 8.6C· at Dura:apur.1 .4C· at Bhilaiand aroun d 5-SC· at both Bokam and Rourkela. A reaso nable estimate of the .srrongest surface inversion would beJOC· to 12C· in the lOwnl 250 m of th e atmosphere.The proportion of surface invers ions greater than 4C· was 80%atDurgapur. .s5llb at 8hilal4.s% at Bokaro an d If.'" at Rourkela.These differences between loca tion!'wee- caused la l'iel yby varying weathe r conditions during the monit oring period.

Comparison of Macro- and Microphysical Properties in Precipitating and Non-Precipitating Clouds over Central-Eastern China during Warm Season

The macro- and microphysical properties of clouds can reflect their vertical physical structure and evolution and are important indications of the formation and development of precipitation. We used four-year merged CloudSat-CALIPSO-MODIS products to distinguish the macro- and microphysical properties of precipitating and non-precipitating clouds over central-eastern China during the warm season (May–September). Our results showed that the clouds were dominated by single- and double-layer forms with occurrence frequencies > 85%. Clouds with a low probability of precipitation (POP) were usually geometrically thin. The POP showed an increasing trend with increases in the cloud optical depth, liquid water path, and ice water path, reaching maxima of 50%, 60%, and 75%, respectively. However, as cloud effective radius (CER) increased, the POP changed from an increasing to a decreasing trend for a CER > 22 μm, in contrast with our perception that large particles fall more easily against updrafts, but this shift can be attributed to the transition of the cloud phase from mixed clouds to ice clouds. A high POP > 60% usually occurred in mixed clouds with vigorous ice-phase processes. There were clear differences in the microphysical properties of non-precipitating and precipitating clouds. In contrast with the vertical evolution of non-precipitating clouds with weaker reflectivity, precipitating clouds were present above 0 dBZ with a significant downward increase in reflectivity, suggesting inherent differences in cloud dynamical and microphysical processes. Our findings highlight the differences in the POP of warm and mixed clouds, suggesting that the low frequency of precipitation from water clouds should be the focus of future studies.

Carbon accumulation rates of Holocene peatlands in central–eastern Europe document the driving role of human impact over the past 4000 years

Peatlands are one of the largest terrestrial carbon sinks on the planet, yet little is known about the carbon accumulation rates (CARs) of mountainous peatlands. The long-term variability in the size of the associated carbon sink and its drivers remain largely unconstrained, especially when the long-term anthropogenic impact is also considered. Here, we present a composite CAR record of nine peatlands from central–eastern Europe (Romania and Serbia) detailing variability in the rates of carbon accumulation during the Holocene. We show examples of extremely high long-term rates of carbon accumulation (LORCA>120 gCm-2yr-1), indicating that mountain peatlands constitute an efficient regional carbon sink at times. By comparing our data to modelled palaeoclimatic indices and to measures of anthropogenic impact we disentangle the drivers of peat carbon accumulation in the area. Variability in early- and mid-Holocene CARs is linked to hydroclimatic controls, with high CARs occurring during the early Holocene and lower CARs associated with the transition to cooler and moister mid-Holocene conditions. By contrast, after 4000 years (calibrated) before present (years BP), the trends in CARs indicate a divergence from hydroclimate proxies, suggesting that other processes became the dominant drivers of peat CARs. We propose that enhanced erosion following tree cover reduction as well as increased rates of long-distance atmospheric dust fallout might have played a role, as both processes would result in enhanced mineral and nutrient supply to bog surfaces, stimulating peatland productivity. Surprisingly though, for the last 1000 years, reconstructed temperature is significantly correlated with CARs, with rising temperatures linked to higher CARs. Under future climate conditions, which are predicted to be warmer in the region, we predict that peat growth may expand but that this is entirely dependent upon the scale of human impact directly affecting the sensitive hydrological budget of these peatlands.