A Comparison of Estimated Net Primary Productivity between under the Current Forest Vegetation and under the Potential Natural Vegetation in Japan

The study investigated the impact of historical and future climate changes on potential natural vegetation (PNV) types and net primary productivity (NPP) in Australia, using the Comprehensive and Sequential Classification System model and the Miami model coupled with climate of the 1931–70 and 1971–2010 periods and the projected climate in 2050. Twenty-eight vegetation classes were classified based on the key climate indicators with four of them being the major vegetation classes corresponding to Australian rangelands and accounting for 75% of total land area. There was a substantial shift in areas of vegetation classes from the 1931–70 period to the 1971–2010 period due to the increased rainfall over large areas across Australia. The modelling projected a range of changes in vegetation classes for 2050 depending on the climate-change scenario used. Many vegetation classes with more intense land use (e.g. steppe and forest) were projected to decrease in 2050, which may have significant impact on the grazing industry and biodiversity conservation. By 2050, NPP was projected to increase in central and northern Australia and to decrease in southern and eastern coastal areas and was projected to be higher on average than that of the 1931–70 period. The vegetation classes approximately corresponding to Australian rangelands mostly had increased NPP projections compared with the 1931–70 period. Although actual response will partially depend on human management activities, fire and extreme events, the projected increase in average NPP in 2050 indicates that Australian vegetation, particularly the rangeland vegetation, will likely be a net carbon sink rather than a carbon source by 2050, with the exception of a ‘warm-dry’ scenario.

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Net Primary Productivity Evaluation for Mao’er Mountain Forest Vegetation based on Cloud Computing and GIS

10.23940/ijpe.18.04.p13.699708 ◽

2018 ◽

Author(s):

Huiling Liu

Keyword(s):

Cloud Computing ◽

Primary Productivity ◽

Net Primary Productivity ◽

Forest Vegetation ◽

Mountain Forest

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Przestrzenno-dynamiczne zróżnicowanie roślinności dolin w krajobrazie młodoglacjalnym na przykładzie Pojezierza Kaszubskiego [Spatial and dynamical diversity of the vegetation in valleys in a young-glacial landscape exemplified by the Kashubian Lakeland (northern Poland)]

Monographiae Botanicae ◽

10.5586/mb.1994.001 ◽

2014 ◽

Vol 76 ◽

pp. 1-175 ◽

Cited By ~ 2

Author(s):

Jacek Herbich

Keyword(s):

Forest Vegetation ◽

Natural Forest ◽

Natural Vegetation ◽

Potential Natural Vegetation ◽

Habitat Conditions ◽

Beech Forests ◽

The Real ◽

Erosion Processes ◽

River Valleys

Yarious geobotanical, photointerpretative, cartographical and pedological methods were used to study the vegetation and the habitat conditions under which it occurred in the valleys of a representative fragment of a young-glacial landscape. The author determined changes in the real and potential natural vegetation in lake depressions during their transformations into river valleys and then during the development of the latter. A geobotanical description has been worked out for various valley types (subglacial channels, river valleys, gullies and denudation-caused valleys) in a young-glacial landscape, taking into account the origin of the latter. The role has been established of denudation and erosion processes and their intensity as habitat-forming factors in the formation of contemporary vegetation of valleys. Relationships were determined between the vegetation and the age of slopes and soils, measured in absolute years, and then the resultant changes in the natural forest vegetation. A relationship has been revealed between the distribution of oak-hornbeam forests and beech forests in lowlands, and erosion and denudation processes, and habitat age. Relationships were determined between the vegetation and slope microrelief during its development, and the differentiation-causing effect of the direction of slope on the vegetation. The historical real vegetation of the period preceding the current wave of anthropopressure has been reconstructed and contemporary changes in valley vegetation have been interpreted. More information has been gained on the role of the direction of sloping as a community-forming factor. The vegetation was analysed from the viewpoint of its bioindicative potential.

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