基于GIS的印度西孟加拉邦西里古里分区土壤性质空间变异性评价及其对农业生产力的影响

Abhisek Sarkar, Dipesh Roy, Deepak Kumar Mandal
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摘要

为了了解土壤的特征以及在农业、灌溉、城市化和其他土地利用目的中的应用,土壤测量和测绘非常重要。不适当的土地管理技术造成的土壤退化是最大限度地提高土地产量的一个主要障碍。土壤参数的地理变异性制图对于农业生产力、食品安全和环境建模是必要的。本研究是为了确定在西里古里分区的一些土壤特征。本研究是在印度西孟加拉邦特莱地区大吉岭喜马拉雅山脚下的西里古里分区的四个街区进行的。为了利用地理空间技术了解土壤特征的地理变异,测定了土壤pH、磷(P)、有机碳(OC)、氮(N)、硫(S)和钾(K)。为了评价该地区的土壤现状,鉴定了土壤的一些重要化学特征。地理信息系统(GIS)技术被用于创建土壤属性的表面地图,利用GPS进行广泛采样分析被认为是一种潜在的有效工具。本研究的目的是利用一种创新的方法在一个新开发的地区进行土壤分析。土壤属性数字地图的制作允许GIS在研究中用于描绘土壤分析的实验室结果。利用可变技术,这种数字制图可以用于农业应用研究。研究结果表明,土壤呈酸性,pH值在pH 6.1 ~ pH 4.5之间。氮的含量在0.13% ~ 1.90%之间。有机碳含量在2.22%至1.47%之间。钾的含量在32 ppm到58 ppm之间,磷的含量在09 ppm到27 ppm之间,硫的含量在10.4 ppm到32.3 ppm之间。这些调查将有助于发展可持续的生态状况和适当的农业系统。随后,它还将帮助当地政府、环保人士、LULC规划者推动与西里古里分区农业和土壤有关的任何发展计划。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Spatial Variability Mapping of Soil Properties and its Impacts on Agricultural Productivity using GIS Approach in Siliguri Sub-Division, West Bengal, India
Soil surveying and mapping are extremely important in order to comprehend the characteristics of soil and what applications there are in agriculture, irrigation, urbanisation, and other land uses purposes. A major hindrance to the maximum production of the land is soil degradation brought on by inappropriate land management techniques. Geographical variability mapping of soil parameters is necessary for the agricultural productivity, food safety and environmental modelling. This research was done to identify some of the soil characteristics in the Siliguri Sub-Division. The present study had been conducted in the four blocks of Siliguri Sub-Division, located at the foot hill of the Darjeeling Himalayas in the Terai region of West Bengal, India. To comprehend the geographic variability of soil characteristics using a geospatial technique Soil pH, Phosphorus (P), Organic Carbon (OC), Nitrogen (N), Sulphur (S) and Potassium (K)were measured. To evaluate the current soil status of the area, some important chemical characteristics of the soil were identified. Geographic Information System (GIS) techniques were used to create surface maps of soil attributes, and sampling-broad analysis utilizing GPS was found to be a potentially effective tool. The goal of the study is to use an innovative method to carry out a soil analysis in a newly developed area. The production of digital maps for soil attributes allowed GIS to be used in the study to portray the laboratory results of the soil analysis. Utilizing variable technology, such digital mapping can be utilised in the research on agricultural applications. The result obtained from the research portray that the soil is acidic in nature and the pH value ranges between pH 6.1 to pH 4.5. Moreover, the presence of Nitrogen is between 0.13 to 1.90 %. Organic Carbon ranges between 2.22 to 1.47 %. The range of Potassium is between 32 ppm to 58 ppm, Phosphorus ranges between 09 to 27 ppm and sulphur content ranges between 10.4 to 32.3 ppm. The investigations will assist the development of a sustainable ecological status and proper agricultural system. Subsequently, it will also help to local government, environmentalists, LULC planners to promote any developmental plan related to agriculture and soil in the Siliguri Sub-division.
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