From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable co...From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable conditions and development path of under-forest economy in Guangdong mountain areas. Results indicate that developing under-forest economy is an essential path for realizing green growth and coordinated development of Guangdong mountain areas. However,due to terrain,market,management and technology reasons,the under-forest economy is still not fully developed in Guangdong mountain areas. The development path of under-forest economy suitable for Guangdong mountain areas should be based on ecological protection and oriented towards maximizing ecological,economic and social benefits. Guangdong mountain areas have in-born natural and resource advantages,economic pull of development mode and market demand change,and favorable condition of policy encouragement for development of under-forest economy. Finally,it came up with recommendations for development of under-forest economy in Guangdong mountain areas from development mode,industrial distribution and development direction.展开更多
The integrated value of the ecological function of tropical forests in the central mountainous areas of Hainan Island was 33.064 8 billion yuan/a in 2010(soil improvement,soil consolidation,soil nutrient maintenance,w...The integrated value of the ecological function of tropical forests in the central mountainous areas of Hainan Island was 33.064 8 billion yuan/a in 2010(soil improvement,soil consolidation,soil nutrient maintenance,water storage and moisture regulation,water purification,carbon sequestration,oxygen releasing,air purification,biodiversity conservation,eco-tourism),equivalent to 16.1%of GDP in Hainan Province this year(205.212 billion yuan).The tropical forests in the central mountainous areas of Hainan Island make great contribution to Hainan Island's ecology,and play an important role in maintaining the stability of the ecological environment in Hainan Island.Through the understanding of major ecological function value of tropical forests,it is necessary to make people cherish the tropical forests in the central ecological function conservation areas of Hainan Province,and spontaneously throw themselves into the ecological environment protection and construction,to promote the rapid and sustainable development of construction in Hainan Province as an international tourism island.展开更多
[Objectives]By testing applicability of SOC depth distribution model in geographical and climatic conditions of Funiu Mountain area,SOC depth distribution model in the region was established and applied. The construct...[Objectives]By testing applicability of SOC depth distribution model in geographical and climatic conditions of Funiu Mountain area,SOC depth distribution model in the region was established and applied. The constructed model was used to estimate SOC mass density in other regions,thereby obtaining SOC abundance distribution chart at different depths.[Methods]165 soil sampling sites were selected from Quercus variabilis forest,Pinus tabulaeformis forest,mixed forest,and shrub forest in Taowan basin of Funiu Mountain area,to determine SOC content at different depths,study SOC depth distribution pattern of forest in Taowan basin of Funiu Mountain area,and assess SOC reserve at different depths.[Results]Average SOC density of Q. variabilis forest,P. tabulaeformis forest,mixed forest,and shrub forest at the depth of 0-20 cm was 7. 92,8. 42,8. 14 and 9. 67 kg/m^2,and there was significant difference in SOC density between shrub forest and Q. variabilis forest,P. tabulaeformis forest,mixed forest( P < 0. 05),and SOC density of four kinds of vegetation all abruptly declined with soil depth increased. At the depth of 0-20 cm,correlation between SOC density and vegetation type,canopy density,clay content and sand content was significant,and the correlation with altitude was insignificant. When carbon density at the depth of 0-100 cm was used to describe regional SOC reserve,the estimated value was lower. The established space model could predict SOC density of forest.[Conclusions]The estimation of deep-layer SOC by the established model needed further consideration,and estimation method for special areas needed to be further demonstrated.展开更多
Riparian areas are unique although often small component of the overall watershed landscape. The structure of riparian forests along Erdaobai River on the north slope of Changbai Mountain were investigated by using fi...Riparian areas are unique although often small component of the overall watershed landscape. The structure of riparian forests along Erdaobai River on the north slope of Changbai Mountain were investigated by using field data collected from eight sampling transects perpendicular to the Erdaobai River channel. Two kinds of species-area saturation curves were used to examine the relationship between species number and minimum sampling area. The results showed that riparian gymnosperms accounted for a high proportion of all gymnosperms in the Changbai Mountain Nature Reserve while riparian ferns and angiosperms accounted for a relatively low proportion. The average minimum sampling areas of riparian forest that included 60%, 80%, and 90% of the community species pool were about 85, 185, and 328 m 2 , respectively; while those for nonriparian forest were about 275, 390, and 514 m 2 , correspondingly.展开更多
In subtropical to warm temperate transitional zone of the Dabie Mountains hinterland forest topsoil as the research object this text,through the different levels of soil bulk density,organic carbon content of the dete...In subtropical to warm temperate transitional zone of the Dabie Mountains hinterland forest topsoil as the research object this text,through the different levels of soil bulk density,organic carbon content of the determination of analytical studies in the area of forest surface soil organic carbon density.Because of the ecological role of small environment,the study area within the soil bulk density increased with depth,surface soil porosity,and bulk density from top to bottom in 0.8.All measuring points are the 0-10 cm surface layer soil organic carbon content are highest,content between 67.232-61.940 g/kg,this,because the forest soil organic carbon important source withers and falls in the vegetation stack and rotten.Different measuring point organic carbon along with depth change characteristic slightly different,low elevation the measuring point soil organic carbon content increases the monotonous drop along with the depth,the elevation is high,the measuring point slightly has in the 30-40 cm depth content increases.The comprehensive bulk specific gravity factor computation,the 0-40 cm soil organic carbon total content slightly has along with altitude above sea level’s rise increases,each square meter organic carbon content between 16 560.5-18 354.6 g,studies the region 0-40 cm soil organic carbon content mean value by 3 measuring points mean value achievement,then this region 0-40 cm soil organic carbon density approximately 174.3 t/hm2;Refers to the related research between the surface layer and the 0-100 cm soil layer organic carbon content relational reckoning,studies the region 0-100 cm soil organic carbon density to be possible to reach 233.9 t/hm2,it indicated that the Dabie Mountain area forest soil system has the giant organic carbon capacity.展开更多
基金Supported by Special Project for Key Sci-tech Output Planning of Guangdong Academy of Sciences(zdccyd201305)Science and Technology Planning Project of Guangdong Province(2012B061800066)
文摘From the origin and connotation of the under-forest economy,this paper analyzed plight of the development of under-forest economy in Guangdong mountain areas. It discussed benefits of under-forest economy,favorable conditions and development path of under-forest economy in Guangdong mountain areas. Results indicate that developing under-forest economy is an essential path for realizing green growth and coordinated development of Guangdong mountain areas. However,due to terrain,market,management and technology reasons,the under-forest economy is still not fully developed in Guangdong mountain areas. The development path of under-forest economy suitable for Guangdong mountain areas should be based on ecological protection and oriented towards maximizing ecological,economic and social benefits. Guangdong mountain areas have in-born natural and resource advantages,economic pull of development mode and market demand change,and favorable condition of policy encouragement for development of under-forest economy. Finally,it came up with recommendations for development of under-forest economy in Guangdong mountain areas from development mode,industrial distribution and development direction.
文摘The integrated value of the ecological function of tropical forests in the central mountainous areas of Hainan Island was 33.064 8 billion yuan/a in 2010(soil improvement,soil consolidation,soil nutrient maintenance,water storage and moisture regulation,water purification,carbon sequestration,oxygen releasing,air purification,biodiversity conservation,eco-tourism),equivalent to 16.1%of GDP in Hainan Province this year(205.212 billion yuan).The tropical forests in the central mountainous areas of Hainan Island make great contribution to Hainan Island's ecology,and play an important role in maintaining the stability of the ecological environment in Hainan Island.Through the understanding of major ecological function value of tropical forests,it is necessary to make people cherish the tropical forests in the central ecological function conservation areas of Hainan Province,and spontaneously throw themselves into the ecological environment protection and construction,to promote the rapid and sustainable development of construction in Hainan Province as an international tourism island.
基金Supported by the National Natural Science Foundation of China(31670616)
文摘[Objectives]By testing applicability of SOC depth distribution model in geographical and climatic conditions of Funiu Mountain area,SOC depth distribution model in the region was established and applied. The constructed model was used to estimate SOC mass density in other regions,thereby obtaining SOC abundance distribution chart at different depths.[Methods]165 soil sampling sites were selected from Quercus variabilis forest,Pinus tabulaeformis forest,mixed forest,and shrub forest in Taowan basin of Funiu Mountain area,to determine SOC content at different depths,study SOC depth distribution pattern of forest in Taowan basin of Funiu Mountain area,and assess SOC reserve at different depths.[Results]Average SOC density of Q. variabilis forest,P. tabulaeformis forest,mixed forest,and shrub forest at the depth of 0-20 cm was 7. 92,8. 42,8. 14 and 9. 67 kg/m^2,and there was significant difference in SOC density between shrub forest and Q. variabilis forest,P. tabulaeformis forest,mixed forest( P < 0. 05),and SOC density of four kinds of vegetation all abruptly declined with soil depth increased. At the depth of 0-20 cm,correlation between SOC density and vegetation type,canopy density,clay content and sand content was significant,and the correlation with altitude was insignificant. When carbon density at the depth of 0-100 cm was used to describe regional SOC reserve,the estimated value was lower. The established space model could predict SOC density of forest.[Conclusions]The estimation of deep-layer SOC by the established model needed further consideration,and estimation method for special areas needed to be further demonstrated.
基金supported by the Ministry of Science and Technology of the People's Republic of China (2006BAD03A09)the Special Fund of State Key Laboratory of Urban and Regional Ecology
文摘Riparian areas are unique although often small component of the overall watershed landscape. The structure of riparian forests along Erdaobai River on the north slope of Changbai Mountain were investigated by using field data collected from eight sampling transects perpendicular to the Erdaobai River channel. Two kinds of species-area saturation curves were used to examine the relationship between species number and minimum sampling area. The results showed that riparian gymnosperms accounted for a high proportion of all gymnosperms in the Changbai Mountain Nature Reserve while riparian ferns and angiosperms accounted for a relatively low proportion. The average minimum sampling areas of riparian forest that included 60%, 80%, and 90% of the community species pool were about 85, 185, and 328 m 2 , respectively; while those for nonriparian forest were about 275, 390, and 514 m 2 , correspondingly.
基金Supported by Anhui Educational Department Natural Science Fund Key Program (KJ2009A154)
文摘In subtropical to warm temperate transitional zone of the Dabie Mountains hinterland forest topsoil as the research object this text,through the different levels of soil bulk density,organic carbon content of the determination of analytical studies in the area of forest surface soil organic carbon density.Because of the ecological role of small environment,the study area within the soil bulk density increased with depth,surface soil porosity,and bulk density from top to bottom in 0.8.All measuring points are the 0-10 cm surface layer soil organic carbon content are highest,content between 67.232-61.940 g/kg,this,because the forest soil organic carbon important source withers and falls in the vegetation stack and rotten.Different measuring point organic carbon along with depth change characteristic slightly different,low elevation the measuring point soil organic carbon content increases the monotonous drop along with the depth,the elevation is high,the measuring point slightly has in the 30-40 cm depth content increases.The comprehensive bulk specific gravity factor computation,the 0-40 cm soil organic carbon total content slightly has along with altitude above sea level’s rise increases,each square meter organic carbon content between 16 560.5-18 354.6 g,studies the region 0-40 cm soil organic carbon content mean value by 3 measuring points mean value achievement,then this region 0-40 cm soil organic carbon density approximately 174.3 t/hm2;Refers to the related research between the surface layer and the 0-100 cm soil layer organic carbon content relational reckoning,studies the region 0-100 cm soil organic carbon density to be possible to reach 233.9 t/hm2,it indicated that the Dabie Mountain area forest soil system has the giant organic carbon capacity.
