https://scholars.lib.ntu.edu.tw/handle/123456789/606076
標題: | Relationships between near-surface soil moisture and environmental features in the early stage of secondary succession after a landslide [崩塌地次級演替初期階段近地表水分與環境因子之關係] | 作者: | Tu H.-T WEI-LI LIANG |
關鍵字: | Landslide;Secondary succession;Soil moisture;Soil physical property;Vegetation recovery;Catchments;Ecosystems;Hydraulic conductivity;Landslides;Porosity;Spatial distribution;Springs (components);Vegetation;Ecosystem restoration;Environmental features;Headwater catchment;Hydrological condition;Saturated hydraulic conductivity;Spatial correlations;Vegetative development | 公開日期: | 2021 | 卷: | 36 | 期: | 1 | 起(迄)頁: | 35-49 | 來源出版物: | Taiwan Journal of Forest Science | 摘要: | Landslides are common natural disturbances in Taiwan, and they usually change the hydrological conditions on hillslopes and influence subsequent vegetation development or ecosystem restoration. To explore the main environmental features controlling the near-surface soil water content after a landslide, this study investigated spatial distributions of topographic and edaphic features, vegetation, and near-surface soil water content. Investigations were conducted in a headwater catchment at the Fushan Research Center of the Taiwan Forestry Research Institute, northern Taiwan in the third year after a landslide had occurred in the headwater. The headwater was partitioned into 2 areas based on disturbance levels. A low-disturbed area was located in the upslope area, and a highly-disturbed area was located in the downslope area where springs were found. Compared to the low-disturbed area, the highly-disturbed area had lower soil porosity, lower saturated hydraulic conductivity, less remaining vegetation, and a lower mean near-surface soil water content. At locations near the springs, both soil porosity and saturated hydraulic conductivity were low, but the near-surface soil water content was consistently high due to being supplied by the springs. As to correlations between spatial distributions of the near-surface soil water content and environmental features, the soil water content was significantly correlated with soil porosity for the entire site. In the low-disturbed area, soil water content was positively correlated with soil porosity and negatively correlated with saturated hydraulic conductivity. In the highly-disturbed area, no significant spatial correlations were found between soil water content and environmental features. The results indicated that connections between the near-surface soil water content and environmental features had not been reestablished in the highly-disturbed area in the initial stage of secondary succession. This could limit subsequent vegetative development after a landslide. ? 2021 Taiwan Forestry Research Institute. All rights reserved. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85114242011&partnerID=40&md5=3a1e6870d365aaeaec9f76d0f51615c0 https://scholars.lib.ntu.edu.tw/handle/123456789/606076 |
ISSN: | 10264469 |
顯示於: | 森林環境暨資源學系 |
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