DINAMIKA DAN TANTANGAN PENGGUNAAN DAN PEMANFAATAN TANAH DI WILAYAH PULAU KECIL

Small island land resource management has specifc characteristic, differ from its main island, due to its geographical characteristic. Moreover, small Island is also vulnerable due to climate changes. Located on Sumenep District, East Java, Masalembu is one of the example of inhabited small island in Indonesia, represent the dynamic and land use management in small island area. This research use DPSIR (drivers, pressures, states, impacts, and responses) method to capture those dynamics. The results show that the dynamics of land use and utilization in Masalembu are described as follow: (i) land use and utilization activities are highly influenced by economic growth, climate change due to the fluctuation of marine products, and population growth; (ii) climate change, together with exploitation of marine resources, resulting the decrease of marine products, thus drive the population to start and to cultivate the land for improving their income. In the long run, land products from agriculture and farming sectors become competitive commodities beside fsheries; (iii) the absence of zonation, strategic, and action plans on land use and utilization control giving the consequences of unstructured, unplanned, and unsustainable land use and utilization.Intisari: Pengelolaan sumberdaya tanah di pulau kecil memiliki ciri khusus yang berbeda dengan pulau induk, terkait karakteristik geografsnya. Selain itu, pulau kecil juga memiliki kerentanan terhadap fenomena perubahan iklim. Masalembu, merupakan salah satu contoh dari ribuan pulau kecil berpenghuni di Indonesia yang dapat mewakili gambaran dinamika pengelolaan dan pemanfaatan lahan di wilayah pulau kecil. Penelitian ini menggunakan metode DPSIR (drivers, pressures, states, impacts, dan responses) untuk menangkap gambaran dinamika tersebut. Hasil penelitian menunjukkan bahwa dinamika penggunaan dan pemanfaatan lahan di Pulau Masalembu dapat dilihat sebagai berikut: (i) aktivitas penduduk atas tanah sangat dipengaruhi oleh pertumbuhan ekonomi, perubahan iklim yang menyebabkan pasang surutnya hasil perikanan laut, dan pertumbuhan penduduk baik yang terjadi karena kelahiran maupun migrasi; (ii) perubahan iklim serta eksploitasi sumberdaya laut yang berlebihan sehingga tidak dapat lagi memenuhi kebutuhan ekonomi masyarakat, menjadi faktor pendorong masyarakat untuk mulai memanfaatkan tanah sebagai alternatif penghasilan, yang kemudian beralih menjadi komoditas unggulan, serta (iii) tidak adanya rencana zonasi dan rencana strategis penggunaan dan pemanfaatan tanah membuat pola-pola penggunaan dan pemanfaatannya menjadi tidak terstruktur dan terencana, serta tidak memenuhi prinsip sustainability .

DINAMIKA DAN TANTANGAN PENGGUNAAN DAN PEMANFAATAN TANAH DI WILAYAH PULAU KECIL

Small island land resource management has specific characteristic, differ from its main island, due to its geographical characteristic. Moreover, small Island is also vulnerable due to climate changes. Located on Sumenep District, East Java, Masalembu is one of the example of inhabited small island in Indonesia, represent the dynamic and land use management in small island area. This research use DPSIR (drivers, pressures, states, impacts, and responses) method to capture those dynamics. The results show that thedynamics of land use and utilization in Masalembu are described as follow: (i) land use and utilization activities are highly influenced by economic growth, climate change due to the fluctuation of marine products, and population growth; (ii) climate change, together with exploitation of marine resources,resulting the decrease of marine products, thus drive the population to start and to cultivate the land for improving their income. In the long run, land products from agriculture and farming sectors become competitive commodities beside fisheries; (iii) the absence of zonation, strategic, and action plans on landuse and utilization control giving the consequences of unstructured, unplanned, and unsustainable land use and utilizationIntisari: Pengelolaan sumberdaya tanah di pulau kecil memiliki ciri khusus yang berbeda dengan pulau induk, terkait karakteristik geografisnya. Selain itu, pulau kecil juga memiliki kerentanan terhadap fenomena perubahan iklim. Masalembu, merupakan salah satu contoh dari ribuan pulau kecil berpenghuni di Indonesia yang dapat mewakili gambaran dinamika pengelolaan dan pemanfaatan lahan di wilayah pulau kecil. Penelitian ini menggunakan metode DPSIR (drivers, pressures, states, impacts, dan responses) untuk menangkap gambaran dinamika tersebut. Hasil penelitian menunjukkan bahwa dinamika penggunaan dan pemanfaatan lahan di Pulau Masalembu dapat dilihat sebagai berikut: (i) aktivitas penduduk atas tanah sangat dipengaruhi oleh pertumbuhan ekonomi, perubahan iklim yang menyebabkan pasang surutnya hasil perikanan laut, dan pertumbuhan penduduk baik yang terjadi karena kelahiran maupun migrasi; (ii)perubahan iklim serta eksploitasi sumberdaya laut yang berlebihan sehingga tidak dapat lagi memenuhi kebutuhan ekonomi masyarakat, menjadi faktor pendorong masyarakat untuk mulai memanfaatkan tanah sebagai alternatif penghasilan, yang kemudian beralih menjadi komoditas unggulan, serta (iii) tidak adanya rencana zonasi dan rencana strategis penggunaan dan pemanfaatan tanah membuat pola-pola penggunaan dan pemanfaatannya menjadi tidak terstruktur dan terencana, serta tidak memenuhi prinsip sustainability.

Geographical isolation and invasion ecology

Isolation is a fundamental geographical characteristic that plays an important role in invasion ecology. However, risk mapping for established non-native species currently tends to ignore isolation, and instead focuses on the risk of population growth through the use of species distribution models. By focusing on how geographical isolation can be used to improve invasive species risk assessments this paper aims to: (i) provide a brief review of how methods to quantify isolation have developed, (ii) describe least-cost modelling as one approach to quantify isolation, (iii) promote catchment area mapping as a method of continuous isolation mapping that can improve invasive species risk assessments that may currently only consider risk from population growth, and (iv) discuss ways in which geographical isolation could be modified to control invasive species.

A rainfall distribution and their influence on flood generation in the eastern Slovakia

This paper aims to geographically assess the flood occurrence in eastern Slovakia by using one of the methods of multi-criteria analysis – rank sum method. Flood risk assessment is conducted in three specific cases: the long term period 1989–2009, the extremely wet 2010 year, and the extremely dry 2011 year. In the analyses, some of the causative factors for flooding in a basin area are taken into account. We use set of causative factors concerning mostly hydrological and physio-geographical characteristic of the target area that can be measured and evaluated such as soil type, daily precipitation (for the years 1989–2009, 2010, 2011), land use, catchment area and basin slope. For recommendation which causative factors should be preferred we use method of multicriteria analysis – ranking method. In the ranking method (RM), every factor/criterion under consideration is ranked in the order of the decision-maker’s preference. Geographic approach to flood risk assessment provides a descriptive presentation of the results obtained. Geographic information systems as a visualization tool is presented in a manner that aids understanding in a user friendly way.Regarding our task of flood risk assessment, the partial results are three composite maps, which present comparison of flood risk zones in percentage of the area in years 1989–2009, 2010, and 2011. The composite maps are background for risk assessment of the impact of rainfall on flood generation.This study of hydrological data and physio-geographical characteristic was carried out with the purpose of the identification of flood risk occurrence in eastern Slovakia. Results from our study shows, that rainfall distribution has high influence on flood risk of the area. Area percentage with very high flood risk index was calculated for “wet” year 2010 as 11.73 %, for “dry” year 2011 as 0.01 % and for period 1989–2009 as 0.28 %.

Trojzemí upon Nisa - the Region of International Co-operation

The contribution presents the basic geographical characteristic of the border region between the Czech Republic, Poland and Germany called Trojzemí. It gives information about its definition, size, main problems, formation and about the programme of its common development. Particular attention is paid not only to the causes and consequences of the devastation of the environment, but also to proposals and plans for its elimination.