There are large discrepancies among estimates of the cropland area in China due to the lack of reliable data. In this study, we used Landsat TM/ ETM data at a spatial resolution of 30 m to reconstruct spatial and temporal patterns of cropland across China for the time period of 1990–2000. Our estimate has indicated that total cropland area in China in 2000 was 141.1 million hectares (ha), inclu...

– The archaeological structures buried underground are displayed by utilizing GPR. Geomorphological units determined via SVF and RRIM in the GIS environment. effects of dry farming, site-tethered pastoralism is discussed using an ABM.

Soy is a multipurpose oilseed crop. It highly nutritious and improves soil fertility. Rainfed agriculture needs to improve crop cultivation technologies focuses on various methods of that contribute the formation an optimal agrophysical structure contributes consistently high soybean yield. Therefore, it expedient relevant study influence tillage density hardness in two phases development (begi...

in order to compare forage and grain production of rye with barley, triticale and vetch under dry farming conditions, an experiment was conducted with eight treatments (including rye, wild rye, triticale, barley, as well as hungarian vetch mixed with rye, wild rye, triticale and barley) in a randomized complete block design with 3 replications in 3 years. in the first year, the highest forage a...

Land use change may influence many natural phenomena and ecological processes, including runoff, soil erosion, sedimentation and soil conditions. Decreasing of forest area in the North of Iran is one of the critical problems in recent years. The aims of this study are to detect land use changes between 1967 to 2002 using satellite images of Land Sat 7 ETM (2002), aerial photos and digital topog...

In dry biomes, spatio-temporal variation in surface water resource stocks is pervasive, with unknown effects on the ranging behaviour of large predators. This study assessed the effect of spatial variation in surface water resources on the ranging behaviour of the African wild dog (Lycaon pictus). We analyzed data for 1992 (dry year with 20 water points) and 2000 (wet year with 30 water points)...

chickpea (cicer arietinum) is the third most important pulse crop in the world, grown widely across asia and the middle east. weed is one of the main limiting factors in chickpea (cicer arietinum) production. several characteristics of chickpea (cicer arietinum), such as slow plant emergence, short plant height, and chickpea morphology allow weeds to compete effectively. to investigate the effe...

The octcoral Sarcophyton glaucum has a wide IndoPaci¢c distribution and is known for its diverse content of natural products.The aimof the current study was to establish a protocol for rearing miniature cuttings of S. glaucum in a closed seawater system. In order to determine the optimal conditions for rearing, the survival, average dry weight, percentage of organic weight and development of th...

In most rainfed production areas in Iran, where wheat fallow is common, crop yield and resource sustainability could be improved by changing to more diverse crop rotation. It seems necessary to identify crop cultivars suitable for such diversification. This study was aimed to determine responses of two common bean (Phaseolus vulgaris L.) cultivars with different growth habits (Sayyad as an inde...