نتایج جستجو برای: karst zones in sabzkoh

تعداد نتایج: 16981664  

Journal: :Croatian medical journal 2008
Tatjana Bakran-Petricioli Donat Petricioli

of the Dalmatian coast type, formed primarily from karst limestone, Eastern Adriatic coast shows great diversity of habitats. This diversity is also influenced by the position of the Adriatic Basin, stretching from northwest to southeast, climatic differences along its length, and the direction of sea currents. Habitats in the submerged karst characteristic for the Croatian side of the Adriatic...

Journal: :ISPRS Int. J. Geo-Information 2017
David M. Makori Ayuka T. Fombong Elfatih M. Abdel-Rahman Kiatoko Nkoba Juliette Ongus Janet Irungu Gladys Mosomtai Sospeter Makau Onisimo Mutanga John Odindi Suresh K. Raina Tobias Landmann

Bee keeping is indispensable to global food production. It is an alternate income source, especially in rural underdeveloped African settlements, and an important forest conservation incentive. However, dwindling honeybee colonies around the world are attributed to pests and diseases whose spatial distribution and influences are not well established. In this study, we used remotely sensed data ...

2016
T. McCormack O. Naughton P. M. Johnston L. W. Gill

Nutrient contamination of surface waters and groundwaters is an issue of growing importance as the risks associated with agricultural run-off escalate due to increasing demands on global food production. In this study, the influence of surface water–groundwater interaction on the nutrient flux in a lowland karst catchment was investigated with the aid of alkalinity sampling and a hydrological m...

2007
OGNJEN BONACCI DAVOR BOJANIC Ognjen Bonacci Davor Bojanic

Rhythmic springs (ebb and flow springs, intermittent springs, potajnice) belong to the group of springs which appear exclusively in karstified terrains. The paper describes various types of rhythmic springs and gives their classification. It also develops a mathematical model for the functioning of this type of springs based on the principle of recharge and emptying of the underground reservoir...

1970
Levent Tezcan Mehmet Ekmekci

Karst is a hydrogeological environment of importance not only for its water resources potential but also for its scenic and economic potential, thereby increasing the intensity of human impact. The uniqueness of karst in this regard stems from its high sensitivity and vulnerability to imposed pressures and its distinctive response to these pressures. Therefore, a clear definition and formulatio...

Journal: :Remote Sensing 2014
Hongyan Cai Xiaohuan Yang Kejing Wang Linlin Xiao

The Southwest China Karst, the largest continuous karst zone in the world, has suffered serious rock desertification due to the large population pressure in the area. Recent trend analyses have indicated general greening trends in this region. The region has experienced mild climate change, and yet significant land use changes, such as afforestation and reforestation. In addition, out-migration...

2009
Anthony H. Cooper

Gypsum karst problems in the Permian and Triassic sequences of England have caused difficult conditions for bridge and road construction. In Northern England, the Ripon Bypass crosses Permian strata affected by active gypsum karst and severe subsidence problems. Here, the initial borehole site investigation for the road was supplemented by resistivity tomography studies. The roadway was reinfor...

Journal: :World journal of microbiology & biotechnology 2012
Xiangbi Chen Yirong Su Xunyang He Yawei Wei Wenxue Wei Jinshui Wu

Soil microorganisms play vital roles in recovering and maintaining the health of ecosystems, particularly in fragile Karst ecosystems that are easily degraded after cultivation. We investigated the composition and diversity of soil bacterial communities, based on RFLP and 16S rDNA sequencing, in a cropland, a naturally revegetated land with former cultivation disturbance and a primeval forest i...

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