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首页> 外文期刊>Indonesian Journal of Forestry Research >SURFACE RUNOFF AND SOIL ORGANIC MATTER AVAILABILITY IN BAMBOO-BASED AGROFORESTRY IN LOMBOK TIMUR DISTRICT
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SURFACE RUNOFF AND SOIL ORGANIC MATTER AVAILABILITY IN BAMBOO-BASED AGROFORESTRY IN LOMBOK TIMUR DISTRICT

机译：彭布勒地区竹子农林地表径流和土壤有机质的有效性

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Bamboo-based agroforestry is suitable for soils which are poor in nutrient. The characteristics of bamboo and the rapid closure of its canopy improve soil cover, soil nutrient availability and soil moisture content, and prevent erosion by reducing surface runoff. The research was aimed at determining the factors that influenced surface runoff and the availability of soil organic matter (SOM) in the bamboo-based agroforestry in East Lombok. Research was done from March 2010 to March 2011 in Lenek Daya village, Aikmel sub-district, East Lombok district. The research plots were located on slopes of 0-15o, 30-45o, and 45-65o; with bamboo canopy closures of 0-25%, 25-50%, 50-75%, and over 75%. The research involving 12 plots, each in 4 x 12 m size. Measurements included surface runoff, bamboo canopy closure, weeds and bamboo leaves litter weight, rainfall depth and duration, dissolved sediment, and soil physical and chemical properties as well as SOM. Correlation and multiple linear regression tests were used in data analysis. The results of the regression tests showed a change in surface runoff which was influenced by changes in bamboo canopy closure, rain duration, rain intensity and soil sand fraction, each by -0.019, 0.418, 0.049 and -0.065 respectively. Rain duration was the highest influencing variable, whereas bamboo canopy closure significantly decreased surface runoff. Bamboo canopy closure had no correlation with the increase of SOM. But, the increase of SOM had correlation with the increase of soil cation exchange capacity (CEC). The positive impact of bamboo canopy closure on Regosol soil fertility in bamboo-based agroforestry land was determined by land management intensity which could increase the availability of SOM and decrease phosphorus element loss due to leaching of nutrient.
机译：竹基农林业适合营养不良的土壤。竹子的特性及其天蓬的快速闭合改善了土壤覆盖率，土壤养分利用率和土壤水分含量，并通过减少地表径流来防止侵蚀。该研究旨在确定影响东部龙目岛竹林农林地表径流和土壤有机质（SOM）可用性的因素。研究于2010年3月至2011年3月在东龙目岛地区Aikmel街道的Lenek Daya村进行。研究区位于0-15o，30-45o和45-65o的坡度上。竹篷的封闭度为0-25％，25-50％，50-75％和75％以上。该研究涉及12个样地，每个样地为4 x 12 m。测量包括地表径流，竹冠封闭，杂草和竹叶凋落物重量，降雨深度和持续时间，溶解的沉积物，土壤理化性质以及SOM。相关性和多元线性回归测试用于数据分析。回归测试的结果表明，地表径流的变化受竹冠层关闭，降雨持续时间，降雨强度和土壤沙粒含量的影响，分别为-0.019、0.418、0.049和-0.065。降雨持续时间是最大的影响变量，而竹冠的关闭明显减少了地表径流。竹棚的封闭与SOM的增加无关。但是，土壤有机质的增加与土壤阳离子交换量（CEC）的增加相关。土地管理的强度决定了竹冠封堵对雷戈索尔农用林地土壤肥力的积极影响，这可以增加土壤有机质的利用率，并减少因养分淋失引起的磷元素损失。

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