scholarly journals KARAKTERISTIK FISIK LAHAN DI NAGARI PARU (RIMBO LARANGAN) KABUPATEN SIJUNJUNG

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Arie Zella Putra Ulni

Indonesia is a country that has a tropical climate, tropical climate caused so much rain during the year compared to the dry season. With the tropical climate of Indonesia has a region dominated by forests that are the lungs of the world. One of the existing forests are forests located in the District Lung Nagari Sijunjung Sijunjung or better known by local people with the name Rimbo Prohibition. This study aims to find out about the physical karaksteristik land (slope, landform, hydrology) in Rimbo Prohibition in Nagari Lung District of Sijunjung Sijunjung, knowing how the utilization of land by the community around Rimbo Prohibition. This type of research is descriptive. The results showed that the physical characteristics of the land is very varied Prohibition Rimbo, Rimbo height of Prohibition highly variable, then the slope in Rimbo Laranagn also vary. Landform in Rimbo ban can be divided into three parts, namely the karst hills, alluvial plains and natural levee. Hydrological conditions in the sub-basins of lung depends on the streams flowing from Rimbo Prohibition. Land use specially designated as forests. With Prohibition Rimbo characteristics that vary widely made public memamfaatkan forest products as needed to make Rimbo Prohibition awake d beauty.Keywords: physical characteristics of the land, the use of Rimbo Prohibition

2017 ◽  
Vol 1 (1) ◽  
pp. 43 ◽  
Author(s):  
M. Saleh S. Ali ◽  
Amrullah Majika ◽  
Darmawan Salman

Challenges in providing sufficient food is a society problem and it will exist along with human civilization history.In this modern civilization, when the population reach more than 7 million people in the world, food consumption and production become a civilization problem and nature becomes a victim of it. Nowadays, almost 1 million people facing undernutrition and malnutritionThis study aimed to identify the pattern of food consumption and production in Tempe Lake, the biggest lake in the province or in Sulawesi island. A fieldwork conducted on February 2016 at Laelo Village (Kelurahan Laelo) that belongs to Tempe Sub-district (Kecamatan Tempe).  Total respondents in this study were 72 people who were selected randomly from those have use the lake as main source of livelihood. Some informants who know more about the lake were also interviewed. Data gathered mainly about  land use of the lake during dry season and wet (flood) season, and food consumption and production pattern, This research found that fish production of the lake has decreased significantly in the last 20 years due to sedimentation, overfishing and environmental contamination.   People consumed various foods for their dietary but mostly consuming rice that they purchased from market and fish and vegetables from the lake. There was no different in amount of rice and fish consumed during wet and dry season.


2011 ◽  
Vol 14 ◽  
pp. 9-18
Author(s):  
Katharina Schumann ◽  
Rüdiger Wittig ◽  
Adjima Thiombiano ◽  
Ute Becker ◽  
Karen Hahn

Many people in the semi-arid tropics strongly depend on non-timber forest products (NTFPs) for livelihood. Increasing threats on NTFP-providing tree species, due to land-use intensification and over-harvesting, require ecological studies as well as additional information provided by local people. One important NTFP-providing tree in West Africa is Anogeissus leiocarpa. Even though this species is highly used, ethnobotanical studies on A. leiocarpa are scarce and address mainly qualitative aspects. Our study investigates uses, perceptions of the population development, and management strategies of A. leiocarpa among the Gulimanceba people in eastern Burkina Faso. We conducted a quantitative ethnobotanical survey and investigated distribution of traditional ecological knowledge related to the species on a local scale, i.e. difference in knowledge between villages, genders, and generations. Interviews reveal that A. leiocarpa is harvested by local people for 18 different uses and emphasize its high importance for local people. Ethnobotanical knowledge of A. leiocarpa was mostly evenly spread between genders and generations, while it slightly differed between villages. Although local people did not actively protect A. leiocarpa, current local harvesting modes and management resulted in sustainable use. However, ongoing land-use intensifications require adapted management strategies to guarantee the persistence of this important species. Our results provide, in combination with ecological results of our previous study, appropriate management recommendations. Our study emphasizes the importance of ethnobotanical studies on a local scale level in order to develop management strategies that are reliable in the specific area under the specific circumstances.


2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Sardjito Eko Windarso dkk

The increasing of malaria cases in recent years at Kecamatan Kalibawang has been suspected correspond with the conversion of farming land-use which initiated in 1993. Four years after the natural vegetation in this area were changed become cocoa and coffee commercial farming estates, the number of malaria cases in 1997 rose more than six times, and in 2000 it reached 6085. This study were aimed to observe whether there were any differences in density and diversity of Anopheles as malaria vector between the cocoa and mix farming during dry and rainy seasons. The results of the study are useful for considering the appropriate methods, times and places for mosquito vector controlling. The study activities comprised of collecting Anopheles as well as identifying the species to determine the density and diversity of the malaria vector. Both activities were held four weeks in dry season and four weeks in rainy season. The mea-surement of physical factors such as temperature, humidity and rainfall were also conducted to support the study results. Four dusuns which meet the criteria and had the highest malaria cases were selected as study location. Descriptively, the results shows that the number of collected Anopheles in cocoa farming were higher compared with those in mix horticultural farming; and the number of Anopheles species identifi ed in cocoa farming were also more varied than those in the mix horticultural farming.Key words: bionomik vektor malaria, anopheles,


Author(s):  
Ricardo Ortiz Ortega ◽  
Alonso Vilches Flores ◽  
Marco Aurelio Rodríguez Monroy ◽  
Patricia Bonilla Lemus

Studies accomplished in freshwater demonstrate the importance of identify the presence of<br />protozoa like free living amoebae (FLA). In particular, the genera Acanthamoeba is associated with<br />severe infections in man, as the Granulomatous Amebic Encephalitis (GAE). The most important<br />factor for the development of these organisms is the high temperature of the water body. The<br />region of the Huasteca Potosina in Mexico, with a tropical climate and great aquatic resorts, like<br />rivers, waterfalls and pools of thermal waters, that allows the development of amoebae. In this<br />study we evaluated the presence of amoebas in the most visited places on the Huasteca Potosina.<br />Samples of a liter were taken in nine sites during the rainy and dry season. 54 strains of amoebas<br />were identify, 46 belong to the genera Acanthamoeba, resulting 30 of them pathogenic in the<br />animal tests. The pathogenic isolated amoebas were present in the most attended resorts by the<br />people in the waterfalls or pools of the places sampling. Temperature turned out to be the most<br />important factor for the presence of amoebae.


Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 501
Author(s):  
Xuege Wang ◽  
Fengqin Yan ◽  
Yinwei Zeng ◽  
Ming Chen ◽  
Bin He ◽  
...  

Extensive urbanization around the world has caused a great loss of farmland, which significantly impacts the ecosystem services provided by farmland. This study investigated the farmland loss due to urbanization in the Guangdong–Hong Kong–Macao Greater Bay Area (GBA) of China from 1980 to 2018 based on multiperiod datasets from the Land Use and Land Cover of China databases. Then, we calculated ecosystem service values (ESVs) of farmland using valuation methods to estimate the ecosystem service variations caused by urbanization in the study area. The results showed that 3711.3 km2 of farmland disappeared because of urbanization, and paddy fields suffered much higher losses than dry farmland. Most of the farmland was converted to urban residential land from 1980 to 2018. In the past 38 years, the ESV of farmland decreased by 5036.7 million yuan due to urbanization, with the highest loss of 2177.5 million yuan from 2000–2010. The hydrological regulation, food production and gas regulation of farmland decreased the most due to urbanization. The top five cities that had the largest total ESV loss of farmland caused by urbanization were Guangzhou, Dongguan, Foshan, Shenzhen and Huizhou. This study revealed that urbanization has increasingly become the dominant reason for farmland loss in the GBA. Our study suggests that governments should increase the construction of ecological cities and attractive countryside to protect farmland and improve the regional ESV.


2021 ◽  
Author(s):  
Steffen Birk ◽  
Johannes Haas ◽  
Alice Retter ◽  
Raoul Collenteur ◽  
Heike Brielmann ◽  
...  

&lt;p&gt;An integrative interdisciplinary approach is currently developed to investigate groundwater systems in alpine and prealpine environments and how they respond to hydrological extremes such as droughts, heavy rain and floods in terms of water quantity, hydrochemical quality, and ecological status. The new approach is aimed at improving the understanding of the interaction between physical, chemical, and biological processes in groundwater responses to extreme events as well as developing indicators suitable for an integrative monitoring and management of the aquifers. For this purpose, observation wells of the existing state hydrographic monitoring net have been selected within the Austrian part of the Mur river basin, stretching from the alpine origin to the national border in the foreland. The investigation area thus comprises diverse hydrogeological settings and land-use types. The selected observation wells have long-term records of groundwater levels and are used for sampling campaigns under different hydrological conditions. Groundwater level fluctuations are evaluated using drought indices and statistical approaches, such as auto-correlation and cross-correlation with precipitation and stream stages. Our hydrochemical analyses of groundwater and surface waters also consider compounds indicative of agricultural sources (e.g., nitrate), wastewater-borne micro-pollutants, and stable isotopes of water. These indicators are used to identify different drivers controlling water origin and quality. The ecological status is characterized using microbiological measures, such as total number of bacteria and microbial activity, groundwater fauna, and the qualitative composition of dissolved organic matter (DOM). First results demonstrate a deterioration of water quality from groundwater to surface water and from the alpine region towards the foreland, corresponding to the more intense agricultural and urban land use in the foreland. Linkages between water quality and hydrological conditions are currently being evaluated and will be further examined using UV-Vis spectrometry for high-resolution in-situ monitoring of water quality changes (DOM and nitrate) at selected observation wells.&lt;/p&gt;


2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Vreni Jean-Richard ◽  
Lisa Crump ◽  
Abbani Alhadj Abicho ◽  
Ali Abba Abakar ◽  
Abdraman Mahamat II ◽  
...  

Mobile pastoralists provide major contributions to the gross domestic product in Chad, but little information is available regarding their demography. The Lake Chad area population is increasing, resulting in competition for scarce land and water resources. For the first time, the density of people and animals from mobile and sedentary populations was assessed using randomly defined sampling areas. Four sampling rounds were conducted over two years in the same areas to show population density dynamics. We identified 42 villages of sedentary communities in the sampling zones; 11 (in 2010) and 16 (in 2011) mobile pastoralist camps at the beginning of the dry season and 34 (in 2011) and 30 (in 2012) camps at the end of the dry season. A mean of 64.0 people per km2 (95% confidence interval, 20.3-107.8) were estimated to live in sedentary villages. In the mobile communities, we found 5.9 people per km2 at the beginning and 17.5 people per km2 at the end of the dry season. We recorded per km2 on average 21.0 cattle and 31.6 small ruminants in the sedentary villages and 66.1 cattle and 102.5 small ruminants in the mobile communities, which amounts to a mean of 86.6 tropical livestock units during the dry season. These numbers exceed, by up to five times, the published carrying capacities for similar Sahelian zones. Our results underline the need for a new institutional framework. Improved land use management must equally consider the needs of mobile communities and sedentary populations.


2000 ◽  
Vol 6 (1) ◽  
pp. 61 ◽  
Author(s):  
John C. Z. Woinarski ◽  
Greg Connors ◽  
Don C. Franklin

We create monthly maps of nectar availability for the 1.4 x 106 km2 jurisdiction of the Northern Territory, Australia. These are based on a combination of vegetation mapping and a series of indices of plant species specific nectar scoring. The maps reveal complex spatial and temporal variation in nectar availability, but most notably a greater nectar resource in the monsoon-influenced north than in the arid south, and a peak in nectar availability in the dry season. The latter is associated with the extensive tropical eucalypt forests (especially those co-dominated by Eucalyptus miniata and E. tetrodonta). In contrast, wet season nectar availability in these forests is limited, but riparian and swampland forests, typically dominated by Melaleuca species, provide rich but spatially restricted nectar resources. The extensive and rich nectar resources available in eucalypt forests in the dry season supplement the diets of many species which are not primarily nectarivorous. This resource helps shape the singularity of northern Australian eucalypt forests relative to other extensive forests elsewhere in the world. Nectarivores remain in the system through a combination of movements across a number of scales, habitat shifting, and diet shifting. The latter is aided by the peaking of invertebrate and fruit resources at the times of minimum nectar production; a shuffling in resource availability brought about by the extreme climatic seasonality.


2011 ◽  
Vol 38 ◽  
pp. 103-122 ◽  
Author(s):  
Jan Jansen

Literacy is a personally acquired skill, and the way it is taught to a person changes how that person thinks. Thanks to David Henige historians of Africa are much more aware of how literacy influences memory and historical imagination, and particularly how literacy systems introduce linear concepts of time and space. This essay will deal with these two aspects in relation to Africa's most famous epic: Sunjata. This epic has gained a major literary status worldwide—text editions are taught as part of undergraduate courses at universities all over the world—but there has been little extensive field research into the epic. The present essay focuses on an even less studied aspect of Sunjata, namely how Sunjata is experienced by local people.Central to my argument is an idea put forward by Peter Geschiere, who links the upheaval of autochthony claims in Africa (and beyond) to issues of citizenship and processes of exclusion. He analyzes these as the product of feelings of “belonging.” Geschiere argues that issues of belonging should be studied at a local level if we are to understand how individuals experience autochthony. Analytically, Geschiere proposes shifting away from ”identity” by drawing from Birgit Meyer's work ideas on the aesthetics of religious experience and emotion; Meyer's ideas are useful to explain “how some (religious) images can convince, while other do not.”


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