Soil erosion and sediment yield in forest and agroforestry areas in West Java, Indonesia
Soil erosion and sediment yield in forest and agroforestry areas in West Java, Indonesia
复制标题
印度尼西亚西爪哇森林和农林业地区的土壤侵蚀和产沙量
DOI：
10.3759/tropics.19.29
复制
发表时间：
1997
影响因子：
3.9
通讯作者：
B. Mitchell
中科院分区：
文献类型：
--
作者：
A. Kusumandari;B. Mitchell
摘要：印尼的土壤侵蚀正以惊人的速度发生。管理方面的挑战不仅是因为对土壤侵蚀过程缺乏了解和缺乏数据，而且还因为难以应用土壤侵蚀模型。这里的目标是测量侵蚀速率和泥沙产量在西爪哇的流域使用农业非点源污染（AGESTO）模型，记录流域的林业和农林土地利用的侵蚀速率，并比较土壤侵蚀率计算AGESTO和通用土壤流失方程（USLE）模型。该方法是使用初级和次级数据作为AGESTO和USLE模型的输入，以及实地观察，以比较两个模型的输出与实地条件。AGERAND模型测量的侵蚀速率约为USLE预测的一半。然而，AGESTIC的产出似乎更切合实际。1991年和1992年，研究区域（2592公顷; 6.402英亩）的侵蚀率分别为95和103吨/公顷/年（8，480和9，205吨/英亩/年）。1991年的沉积物产量为99，630公顷/年（246，000吨/年），1992年为108，135公顷（267，000吨/年）。关于森林和农林复合区土壤侵蚀的t检验表明，土壤侵蚀率的差异在统计学上不显著（α =0.05）。基于这一发现，农林复合经营是一个很好的选择，土地利用，以尽量减少土壤侵蚀率。
ABSTRACT: Soil erosion in Indonesia has occurred at an alarming rate. A management challenge arises not only because of the lack of understanding of soil erosion processes and lack of data, but also due to difficulties in the application of soil erosion models. The objectives here are to measure erosion rates and sediment yields in a watershed in West Java using the Agricultural Non-point Source Pollution (AGNPS) model, to document rates of erosion from forestry and agroforestry land uses in the basin, and to compare soil erosion rates calculated by the AGNPS and Universal Soil Loss Equation (USLE) models. The method was to use both primary and secondary data as inputs to the AGNPS and USLE models, as well as field observations to compare the outputs from the two models with conditions in the field. The AGNPS model measured about half of the erosion rate predicted by the USLE. However, the AGNPS output appears to be more realistic. The erosion rates of the study area (2592 ha; 6.402 acres) were 95 and 103 ton/ha/yr (8,480 and 9,205 ton/acre/yr) in 1991 and 1992. The sediment yields were 99,630 ha/year (246,000 ton/yr) in 1991, and 108,135 ha (267,000 ton/yr) in 1992. The t-test regarding soil erosion in forested and agroforestry areas demonstrates that the difference in soil erosion rates is not statistically significant (α =0.05). Based on this finding, agroforestry is an excellent choice of land use to minimize soil erosion rates.