Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

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Nội dung chi tiết: Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENTVIETNAM FORESTRY UNIVERSITYSTUDENT THESISEVALUATING EFFECTS OF VEGETATION C OVER TYPES ONOVERLAND FLOW GE

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain ENERA HON AND SOIL EROSION IN LUOT MOUNTAINMajor: Natural Resources Management (Advanced Curriculum)Code: 1)850101Faculty: Forest Resources and Enviro

nmental ManagementStudent: Chao Thi YenStudent ID: 1053020749Class: K55 Natural Resources Management Course: 2010 - 2014Advanced Education Program Dev Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

eloped in collaboration with Colorado State University, USASupervisor: Dr. Bui Xuan DungHanoi, November 2014ABSTRACTWe examined the effects of three v

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

egetation types: Cinnamomum parthenoxylon plantation, shrub and grass on overland flow and soil erosion. We established three plots in the same catchm

MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENTVIETNAM FORESTRY UNIVERSITYSTUDENT THESISEVALUATING EFFECTS OF VEGETATION C OVER TYPES ONOVERLAND FLOW GE

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain mơmtimparthenoxylon plantation. Plot 2 for shrubs and Plot 3 for grass. In Plot 1. the canopy coverwas 90%; ground surface was covered 80% by small Cừ

mamomum pcưihenoxyỉoỉi treesand littcrfall. Ground surface in Plot 2 was covered by shrub and litterfall up to 90% and40 - 80% was the surface cover o Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

f Plot 3 was grass. The rainfall, surface runoff andsediment were collected after each storm event, rhe total of monitoring storm was 10storm events w

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

ith the rainfall from 3 mm to 202 mm. There was no clear difference ofsurface runoff and sediment in Cinnamơiniím parthenoxyỉon plantation, shrub and

MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENTVIETNAM FORESTRY UNIVERSITYSTUDENT THESISEVALUATING EFFECTS OF VEGETATION C OVER TYPES ONOVERLAND FLOW GE

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain surface runoff inshrub was 12 nun ranged from 0.03.3 nun and the total amount of surface runoffin grass was 13 mm ranged fifjin 0.0l ?fo 7.0 mm. The

total amount of eroded soil inm2, in shrub was 77 g' mCinnamomttm panwas 36 g’’ m~ ranged from 1.1 g'1 nt“ to 16.4 g'1from 0.8 g' m2 to 30 g/ m2 and 8 Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

6 g'm2 ranged from0.8 g' m2 to 26 g m2 in grass. When surface runoff increased, the sediment from soilerosion also increased. The surface runoff in st

Evaluating effects of vegetation cover types on overland flow generation and soil erosion in luot mountain

orms that bigger than 25 nun was 95 timeshigher than that in storms less than 25 mm; the amount of eroded soil in storms that biggerthan 25 mm was 16

MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENTVIETNAM FORESTRY UNIVERSITYSTUDENT THESISEVALUATING EFFECTS OF VEGETATION C OVER TYPES ONOVERLAND FLOW GE