[1]WANG Hai-ming,CHEN Zhi-jian,LI Xian-wei.Study on Biomass and Nutrient Content Cycle of Different Forest and Grass System in Converting Farm Lands to Forest and Grass[J].Research of Soil and Water Conservation,2005,12(02):125-127,130.
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Study on Biomass and Nutrient Content Cycle of Different Forest and Grass System in Converting Farm Lands to Forest and Grass
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
12
Number of periods:
2005年02期
Page number:
125-127,130
Column:
Public date:
1900-01-01
- Title:
- Study on Biomass and Nutrient Content Cycle of Different Forest and Grass System in Converting Farm Lands to Forest and Grass
- Keywords:
- forest and grass ecosystem; biomass; nutrient content cycle; converting agricultural lands to trees
- CLC:
- S171.1
- DOI:
- -
- Abstract:
- Forest and grass ecosystem plays a very important role in converting agricultural lands to forest.This paper makes a preliminary study was made on biomass and its distribution and neighborhood interference between forest and grassland about three different forest-grassland patterns(ⅠCunninghamia lanceolatta with Lolium multiflorum.Ⅱ Ttiploid tomentosa with Lolium multiflorum.Ⅲ Bambusa pervariabilis×Dendrocal amopsis validus with Hemarthria) around the Sichuan basin.The result shows that:proportion of forest and grass biomass on the ground under ground;trunk twig and leaf.Pattern Ⅲ belongs to artificially management precisely,and Hemarthria yield attains to 7.28 t/km~2.In the other patterns grass biomass is very low,and especially in the patternⅡ.The grass biomass is the lowest.Cunninghamia lanceolatta remained content is by the most in the high forest.The second is Ttiploid tomentosa.The third is Bambusa pervariabilis×Dendrocal amopsis validus.The distribution of trunk remained content is higher in every pattern.The rate of the bark remained content is above 10% in the high forest.The rate of Ttiploid tomentosa root is 23%.And the rate of Cunninghamia Lanceolatta is the lowest;To Bambusa pervariabilis×Denarocal amopsis validus,the ration between trunk and crown is the biggest.This is relating to bamboo’s grown features.Ttiploid tomentosa crown is the biggest but the ratio is the lowest.About the ratio of branch and leaf,Bambusa pervariabilis×Dendrocal amopsis validus is the highest but Cunninghamia lanceolatta is the lowest.The ration of trunk and leaf is Bambusa pervariabilis×Dendrocal amopsis validus Ttiploid tomentosa Cunninghamia lanceolatta.The biggest ration of photosynthetic system and non-photosynthetic system is Bambusa pervariabilis×Dendrocal amopsis validus.In the pattern Ⅲ everything is the biggest,pattern Ⅲ is a very important model.
- References:
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Last Update:
1900-01-01