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Perkebunan dan Lahan Tropika Pub Date : 2022-12-06 DOI:10.26418/plt.v12i1.60023

Alpius Alpius, Riduansyah Riduansyah, Asadi Asadi

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摘要

由于土地活动开放、非法采金、生活垃圾等因素的影响，此时的德代小流域条件发生了形态和功能的变化。本研究旨在研究德代河流域各特征子流域的特征和剖面。在本研究中，仅局限于Sub Watershed的特征，其中1个出口观测由2个点采样组成。德代小流域位于西加里曼丹县新塘德代街道，面积约为±14.454.70公顷。本研究分为两个阶段:一是对德代小流域进行连续6天的1个出水口观测，2点采样。对德代小流域上下游进行点采样。然后对水样进行实验室质量和总悬浮物(TSS)分析。研究结果表明，亚达斯德代的形态和图案为鸟类羽毛和树突状图案，而横向呈抛物线形。该阶由5类组成，IKD值为0.0087 km/km2，属于流量较低的范畴，上游平均流量为0.6787 m3/sec，下游平均流量为4.1976 m3/sec，上游流量曲线的相关系数r为0.995，下游流量曲线的相关系数r为0.985，上游流量曲线的决定系数r为0.990，下游流量曲线的决定系数r为0.969。Sub DAS Dedai的水质上游平均pH值为6.78，下游平均pH值为6.46，水质仍然良好，上游平均温度为29580℃，下游平均温度为2970℃，自然状态正常，上游平均亮度为1.05 m，下游平均亮度为1.13 m。总悬浮物(TSS)上游平均值为5.2 mg/l，下游平均值为8.7 mg/l，上游输沙量平均值为0.3135 t /d，下游平均值为3.2611 t /d，拱沙相关系数r为0.333，下游平均值为0.910，决定系数R2为0.870，下游平均值为0.827。关键词:流域;特征;德代

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STUDI KARAKTERISTIK SUB DAERAH ALIRAN SUNGAI DEDAI PADA DAERAH ALIRAN SUNGAI MELAWI KABUPATEN SINTANG

Dedai Sub watershed condition at this time has much changes of form and fuction caused by the opening of land activities, illegal gold mining and household garbage. This research aims to study the characteristic and profile of each characteristic Dedai Sub Watershed. In this study, only limited to the characteristic of the Sub Watershed, where 1 outlet observations consist of 2 point sampling. Dedai Sub Watershed has an area about ± 14.454,70 ha located in the subdistrict of West Kalimantan Regency Sintang Dedai.This study consists of two phases : first, field research of Dedai Sub Watershed conducted during 6 days consecutive on 1 outlet observations with a 2 point sampling. Point sampling performed on downstream and upstream Dedai Sub Watershed. Then samples of water counducted analysis of Laboratory Quality and Total Suspended Solid (TSS) health farm Faculty of Agriculture University of Tanjungpura Pontianak.Result of the study showed that the form and pattern of Sub DAS Dedai is a form of bird feathers and dendritic pattern, while the transverse parabolic profile. The order consists of 5 classes, with the value of IKD is 0,0087 km/km2 and belongs to the category of low discharge values of the flow upstreaman average of 0,6787 m3/sec downstream and 4,1976 m3/sec, the correlation coefficient discharge curve (r) of upstream 0,995 and downsream 0,985, with a coefficient of determination (R2) upstream 0,990 and downstream 0,969. Water quality on Sub DAS Dedai has an average pH of upstream 6,78 and downstream 6,46 is still good and the average temperature of the upstream 29,580C and downstream 29,70C still under normal circumstances in nature, whereas the average brightness level of the upstream 1,05 m and downstream 1,13 m. Total Suspended Solid (TSS) values averaged of upstream 5,2 mg/liter and downstream 8,7 mg/liter, while the average value of the upstream sediment discharge of 0,3135 ton/day and downstream 3,2611 ton/day and the correlation coefficient arch sediment (r) of upstream 0,933 and downsream 0,910, with a coefficient of determination (R2) upstream 0,870 and downstream 0,827.Keywords: watershed, characteristics, Dedai

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Perkebunan dan Lahan Tropika

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