نتایج جستجو برای: shifting cultivation
تعداد نتایج: 61727 فیلتر نتایج به سال:
The study was carried out to analyse the economics of shifting land from field crops hog plum cultivation in southern Bangladesh during July September 2018. A total 120 farmers were selected by using multistage stratified random sampling technique collect primary data. Result shows that per hectare average cost Tk. 94,126. yield 7.97 t ha-1. Net return 126,921 hectare. By cultivating plum, obta...
In Southern Mexico, shifting cultivation is creating a mosaic of agricultural lands, secondary forests, and disturbed mature forests (montañas). Increased land-use change, due to population and market pressures has changed the structure and function of these forests. This study investigates the stocks and fluxes of woody debris during the course of secondary succession. We inventoried fine ( 1....
Baligang is a Neolithic site on a northern tributary of the middle Yangtze and provides a long archaeobotanical sequence from the Seventh Millennium BC upto the First Millennium BC. It provides evidence for developments in rice and millet agriculture influenced by shifting cultural affiliation with the north (Yangshao and Longshan) and south (Qujialing and Shijiahe) between 4300 and 1800 BC. Th...
Ecosystem research focuses on goods and services, thereby ascribing beneficial values to the ecosystems. Depending on the context, however, outputs from ecosystems can be both positive and negative. We examined how provisioning services of wild animals and plants can switch between being services and disservices. We studied agricultural communities in Laos to illustrate when and why these switc...
The analysis of the denaturated gradient gel electrophoresis (DGGE) of the polymerase chain reaction (PCR) amplified 16S rDNA fingerprints demonstrated a high diversity of bacterial communities in the soils from the three study sites at the surface and subsurface soil layers. The undegraded site possessed maximum number of 16S rDNA fingerprints than the degraded and undegraded sites at both soi...
1 2 It is now attested that a large part of the Amazonian rain forest has been cultivated 3 during Pre-Colombian times, using charcoal as an amendment. The incorporation of charcoal 4 to the soil is a starting point for the formation of fertile Amazonian Dark Earths, still selected 5 by Indian people for shifting cultivation. We showed that finely separated charcoal was 6 commonly incorporated ...
Nagaland is a small state in the north-eastern part of India where majority population depends on agriculture serving as backbone its economy. Cereals occupies more than two-third total cultivable area rice, maize and millet being major variants cultivated. Two methods cultivation are mainly practiced namely, jhum (shifting cultivation) terrace cultivation, which jointly makes about 86 percent ...
The lack of scientific baseline information hinders appropriate design and management of protected areas. To illustrate the value of science to management, we consider five scenarios for the 202.0 km² Puerto Princesa Subterranean River National Park, Philippines: (1) closure to human activities, (2) and (3) two levels of increase in unplanned human activities, (4) creation of a forest corridor ...
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