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Agroecological Zones, Agricultural Land Regions and Crop Suitability Classification for Kotawaringin Barat Regency, Kalimantan, Indonesia
Full text linkIn land use, not all lands can be optimally used for agricultural purposes because
each land is influenced by its natural environment that consist of three main
elements: land (soil), climate, and crop. The information of these elements is
urgently required as a basic consideration in agriculture and area development
planning process.
The information of natural environment can be organized into a system of
agroecological zone (AEZ) that represent homogeneous biophysical environment
condition and refers to the division of an area of land into smaller units, which have
similar characteristics related to land suitability.
The study was conducted in Kotawaringin Barat Regency, Kalimantan, Indonesia
and consists of three main part, i.e. developing agroecological zone (AEZ) system,
establishing agricultural land regions, and determining land suitability for some existing crops. The expert system called Land Use program was employed to
interpret the basic data. The data inputs and results in the form of digitized maps are
component of geographic information system (GIS), which facilitates future
utilization, updating, improvement, storing, and displaying.
On the basis of climatic and land characteristics data at reconnaissance level with
scale of 1: 250,000, and considering that Kotawaringin Barat regency has four slope
classes and isohyperthermic temperature regime with the existence of udic moisture
regime, this regency is divided into four main zones (I, II, III, and IV) and four subzones
(IV. l , IY2, IV.3, and IV. 4). As recommended by expert system, zone I and
sub-zone IY2, IV.3 and IV.4 should be allocated for forest to protect natural
resources and environment in general, zone II can only be utilized for permanent or
perennial crops plantation, zone III for agroforestry, and sub-zone IY1 for annual
crops farming.
On the basis of agroecological zone (AEZ) system, the present land use can then be
changed according to agroecological conditions. Comparison of present land use
and AEZ leads to general recommendations on how to improve and manage the
current land use through extensification, intensification, and conservation
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The Growth, Production, and Quality of Shallot at Inland Quartz Sands (Quarzipsamments) in the off Season
Full text linkThe development of shallot cultivation at back quartz sand during rainy or off season can be considered as new innovation. The objectives of this study is to obtain shallot varieties that are adaptive in terms of the growth, production, and quality parameters. The research was conducted during off season in Palangkaraya. The experimental design used in this research is randomized block design (RBD) 4x3 with 4 treatments of varieties (Maja Cipanas, Tajuk, Bauji and Bima Brebes), and 3 replication for each treatment. The results showed that soil bulk density increased with the deepening of the soil, however soil water content decreased. Based on growth parameter, Tajuk showed the best results and significantly different comparing to Bima Brebes, with plant height consecutively 46.88 cm and 39.52 cm, number of leaves 70.7 and 35.27 and number of shoot 13.43 and 6.60. For production parameter, the weight of varieties of Maja Cipanas, Bauji dan Bima Brebes is 10 grams more than Tajuk with weight is 6,97 grams only. The produstion of Tajuk is low and not significantly different from Bima Brebes, with production is respectively 15.28 ton/ha and 13.31 ton/ha, while the varieties of Bauji showed the highest dry production of 22.4 ton/ha although it is not significantly different with Maja Cipanas that can produce 18.49 ton/ha. For quality parameter, the varieties of Bima Brebes showed the optimum results in terms of parameter of hardness of tubers and total dissolved solids (TDS) with the value of 4.9 kg /cm2 and 16,42 % respectively
Spatial Planning Concept for Genetic Resource of Local Paddy Development to Support Sustainable Agriculture in Central Kalimantan
No full textCentral Kalimantan region with an area of 15,451,287 hectares has in large number of biodiversity including genetic resources of local paddy plant. One of the threats to the preservation of genetic resources for local paddy in Central Kalimantan include the intervention of human activity through land use and conversion of forest land for plantation industries expansion. The availability of land resources with its geographic areal potential as the original habitat of genetic resouce of food crops in Central Kalimantan need to be managed rationally and sustainable through preparing spatial planning concept. The objective of study was to establish the concept of regional planning in order to determine land allocation for conservation area. Exploration survey methods was used to inventory the existence of genetic resource of local paddy plant as objects of analysis for drafting planning concept. Geographic information system (GIS) application was used to assist the process of spatial analysis in order to produce spatial information of regional planning as part of the GIS. The results of the inventory and spatial analysis explained that number of diversity of genetic resource for local paddy in wetlands was 55 plants while in for uplands, there were 68 plants of local paddy, spatially located at river streams associated with settlement areas. The concept of regional planning for the allocation of wetland conservation area involve Kotawaringin Barat, Kotawaringin Timur, Seruyan, Pulang Pisau dan Kapuas, with areas priority of Kotawaringin Timur and Pulang Pisau. Meanwhile, for uplands, the allocation was addressed to Lamandau, Kotawaringin Barat, Katingan, Gunung Mas, Pulang Pisau, Kapuas Barito Timur, Barito Utara dan Murung Raya with priority emphasis on Lamandau and Katingan regency
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Environmentally Sound Spatial Management Using Conservation and Land Evaluation Approach at Sloping Lands in Humid Tropic (A case study of Antang Kalang sub-district, Central Kalimantan, Indonesia)
Full text linkThe main problem faced by sloping lands in the humid tropic includes land degradation influencing natural ecosystem damage broadly. Land conversion and improper land-use have been widely recognized as the main cause of environmental damage since the demands for agricultural lands become greater than land resource available. The objective of this study was to determine the concept of appropriate land-use planning through environmentally sound spatial management in order to prevent land and environmental degradation. The sub-district of Antang Kalang was chosen as study area representing sloping lands in humid tropic that have a susceptibility to erosion. Conservation approach by the use of USLE erosion risk prediction model and land evaluation through land suitability classification was used in this study. The geographic information system (GIS) and remote sensing (RS) technology were applied to generate spatial basic information and to assist in spatial analysis. Two crops, upland rice, and rubber, representing food crop and estate p have been selected based on the local resource that has been existed since a long time ago. The result of spatial analysis shown that the arable land for agricultural practices covers 9,039 hectares (23.19%) while for non-arable land, it is allocated for forest preservation with total areas 29,934 hectares (76.81%). Land-use planning and land resources management involving conservation aspect and land suitability evaluation should be taken into account for farming practice at sloping lands areas since the value of soil loss potential appears as an indicator of erosion risk. Permanent cultivation system and the intercropping farming system is the option of recommended agricultural practice at sloping lands in the humid tropic that have a susceptibility to erosion
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