[1]HE Liping,LI Guixiang,CHAI Yong,et al.Analysis of Water Conservation Capacity of Typical Degraded Secondary Forests in Sub-Alpine Areas of Northwest Yunnan Province[J].Research of Soil and Water Conservation,2020,27(02):233-237,245.
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Analysis of Water Conservation Capacity of Typical Degraded Secondary Forests in Sub-Alpine Areas of Northwest Yunnan Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
233-237,245
Column:
Public date:
2020-03-30
- Title:
- Analysis of Water Conservation Capacity of Typical Degraded Secondary Forests in Sub-Alpine Areas of Northwest Yunnan Province
- Keywords:
- sub-alpine areas of northwest Yunnan Province; degraded secondary forests; water conservation
- CLC:
- S715.7
- DOI:
- -
- Abstract:
- In order to find out the pattern of forest vegetation and water conservation capacity change after logging of Picea and Abies, taking the original Abies forests in northwestern Yunnan Province as a control, the water conservation capacities of the forests which naturally grew after harvesting Picea and Abies in the 1970s, 1980s and 1990s were analyzed using the water immersion method and the ring knife method. The results show that the maximum water holding capacities of different vegetation layers in different forest stands are different; the maximum water holding capacity of canopy layer is the largest in the original Abies forest, followed by degraded Betula forest, sparse Picea+Abies forest, degraded Larix potaninii var. macrocarpa forest, and degraded Rhododendron simsii Planch. Shrub; the maximum amount of water held by the shrub layer is the largest in degraded Quercus semicarpifolia shrub, followed by degraded Rhododendron simsii Planch. shrubs, degraded Larix potaninii var. macrocarpa forests, sparse Picea +Abies forest, degraded Betula forest, and original Abies forest; the maximum amount of water held by the grass layer is the largest in the original Abies forest, and the rest are degraded Betula forest, sparse Picea +Abies forest, degraded Larix potaninii var. macrocarpa forest, degraded Rhododendron simsii Planch. shrub, and degraded Quercus semicarpifolia shrub; the maximum amount of water held by the litter varies greatly, the greatest one is found in the original Abies forest, followed in degraded Betula forest, degraded Larix potaninii var. macrocarpa forest, degraded Rhododendron simsii Planch. shrub, sparse Picea +Abies forest; the maximum water holding capacity in the vegetation layer is the largest in the original Abies forest, followed by sparse Picea +Abies forest, degraded Betula forest, degraded Rhododendron simsii Planch. shrub, degraded Larix potaninii var. macrocarpa forest, and degraded Quercus semicarpifolia shrub. It is indicated that the better the vegetation is, the less disturbance is, the greater the amount of water held by the vegetation is, the less the tree species are, and the less the vegetation holding water is. According to the analysis of water conservation in different logging years of sub-alpine Picea+Abies in northwestern Yunnan Province, the maximum water holding capacity is greater under less logging disturbance.
- References:
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Last Update:
2020-02-25