Model Tata Guna Lahan untuk Mendukung Ketersediaan Air yang Berkelanjutan di Daerah Aliran Sungai Krueng Peusangan

Abstract

Watershed management is land use regulation or optimizating of the various interests in a rational as well as other eco-friendly practices that can be assessed by the indicators of the quantity, quality and continuity of the flow of the river at the point of expenditure. The aims of this study is to determine the carrying capacity of water using Mock model and integrated model NRCS and baseflow, to determine the stability of the water production, water demand prediction and to establish a model of land use control through Curve Number. The results obtained for the availability of water using a mock model evapotranspiration from the Penman formula is 804,192,989.26 m3/year. While the availability of water using NRCS integration model and baseflow is 2,559,231,717.61 m3/year. The water availability of measurements is 911,510,715.74 m3/year. Performance test showed that a mock model of the best models of the test results to the point of discharge measurements. Water production in the stability at watershed of Krueng Peusangan vary greatly on a five-point observation. Krueng Seumpo area (A) has a pattern of infiltration trend y = 9.2x-0.35, Ds.Simpang Jaya region (B) y = 559.7x-0.5, Kr region. Beukah (C) y = 142x-0.32, Sub-watershed Lut Tawar has a pattern of infiltration (D) y = 1.301x-0.12 and the sub das Teupin Mane point (E) y = 2.106x-0.47. It also shows that the location of A, B, C, E slope pattern of infiltration much reduced compared to the Sub Das Lut Tawar. (D) which tends to the horizontal. Total water demand in 2010 is 660.344.828.6 m3 and 809.939.456,2 m3in 2060. Based on the classification of Water Use Index value, for Krueng Peusangan watershed classified in classification <0.6 or categorized in good condition based on the availability of water from NRCS models. But based on the availability of water the average yield measurement data (period 1992-1996), the use of water up to 2020 are moderate. But for the years 2020-2040 classified as poor. Primary forest area decreased by 82.51% in the transition matrix peiode decreased 8.86% from 1990 to 2000 and the period from 2000 to 2011. The changes in surface runoff increased by 977% (1990-2000) and by 30% (period 2000-2011). Sustainable scenarios and conservation scenarios with values obtained Curve Number, runoff will not occur after simulated by the model is formed. This means that it can increase infiltration and groundwater reserves. While researcher scenarios to preserve primary forest and conversion of scrub and vacant land to a secondary dry forest can maintain the availability of water for in the next 50 years with use assuming average rainfall for two decades (1992-2012)

Watershed management is land use regulation or optimizating of the various interests in a rational as well as other eco-friendly practices that can be assessed by the indicators of the quantity, quality and continuity of the flow of the river at the point of expenditure. The aims of this study is to determine the carrying capacity of water using Mock model and integrated model NRCS and baseflow, to determine the stability of the water production, water demand prediction and to establish a model of land use control through Curve Number. The results obtained for the availability of water using a mock model evapotranspiration from the Penman formula is 804,192,989.26 m3/year. While the availability of water using NRCS integration model and baseflow is 2,559,231,717.61 m3/year. The water availability of measurements is 911,510,715.74 m3/year. Performance test showed that a mock model of the best models of the test results to the point of discharge measurements. Water production in the stability at watershed of Krueng Peusangan vary greatly on a five-point observation. Krueng Seumpo area (A) has a pattern of infiltration trend y = 9.2x-0.35, Ds.Simpang Jaya region (B) y = 559.7x-0.5, Kr region. Beukah (C) y = 142x-0.32, Sub-watershed Lut Tawar has a pattern of infiltration (D) y = 1.301x-0.12 and the sub das Teupin Mane point (E) y = 2.106x-0.47. It also shows that the location of A, B, C, E slope pattern of infiltration much reduced compared to the Sub Das Lut Tawar. (D) which tends to the horizontal. Total water demand in 2010 is 660.344.828.6 m3 and 809.939.456,2 m3in 2060. Based on the classification of Water Use Index value, for Krueng Peusangan watershed classified in classification <0.6 or categorized in good condition based on the availability of water from NRCS models. But based on the availability of water the average yield measurement data (period 1992-1996), the use of water up to 2020 are moderate. But for the years 2020-2040 classified as poor. Primary forest area decreased by 82.51% in the transition matrix peiode decreased 8.86% from 1990 to 2000 and the period from 2000 to 2011. The changes in surface runoff increased by 977% (1990-2000) and by 30% (period 2000-2011). Sustainable scenarios and conservation scenarios with values obtained Curve Number, runoff will not occur after simulated by the model is formed. This means that it can increase infiltration and groundwater reserves. While researcher scenarios to preserve primary forest and conversion of scrub and vacant land to a secondary dry forest can maintain the availability of water for in the next 50 years with use assuming average rainfall for two decades (1992-2012)