Temporal and spatial distribution of cropland-population-grain system and pressure index on cropland in Jinghe watershed;
A Study of population stress simulation in slope cropland de-farming based on grid;
Many gains in cropland are associated with irrigation, but there are also swaths of improvement in rain-fed cropland and pastures in the prairies and plains of North America and western India.
Distribution of heavy metals in cropland soils amended with sewage sludge and in the uptake by soybean
The converting cropland to forest and grassland impels the land use pattern change, agricultural structure adjustment and agricultural gross output value increase.
At that time, there was no Haifeishi, Jinsong District was still a cropland. In summer, dragonflies could be caught in paddy fields. Armed police officers and soldiers raised pigs and sheep around.
This is only a part of his cropland.
Cropland classification is a category of land evaluation, its task is to figure out the quality, quantity and spatial distribution of cropland in some regions.
In the decrement of cropland, 12%of it transfered into forestland.
Spatio-temporal variations in the starting dates of growing season in China's cropland over the past 20 years
By using GIS technology, this paper studied the patch dynamics of cropland and grassland in Zhangye oasis, Gansu Province in 1985-2006.
the world loss of cropland
The soil nutrient condition with different layers changed slightly under Conversion from cropland into Forest, but cropland changed significantly.
The discussion of calculation method based on multi-object oriented cropland ridge coefficient
Land Use-19.1% cropland; 24.4% permanent pasture; 31.3% forests and woodland; 25.2% other; arable land per capita-1.9 acres; land borders-7,611 miles; coastline-12,381 miles.
Several trends are converging to reduce the grain area, including the loss of irrigation water, desert expansion, the conversion of cropland to nonfarm uses, the shift to higher-value crops, and a decline in double-cropping due to the loss of farm labor in the more prosperous coastal provinces.
As research of conversion of cropland to forestland develops, many researchers have concerned the follow-up problem of conversion of cropland to forestland.
Soil carbon and nitrogen sequestration following cropland to forage grassland conversion and its effect to CO_2 and N_2O fluxes
After getting out of the car, and then along a path to continue to walk in, a piece of cropland growing barley, peas, rape and other crops appeared in the lake area, like a picture with pastoral customs.
The research estimates the cropland production potentiality by step correct method.
Area: 377,800 sq. km.. land use-12.20% cropland, 1.7% permanent pasture, 66.7% forests and woodland, 19.4% others; coastline-34,301 km.; land borders-0 km.
Environmental quality suitability evaluation of heavy metal polluted cropland soils
In addition to property damage, the floods have affected some of the nation's most fertile cropland, and are expected to have an impact on already rising food prices, especially for crops like corn.
The study is an earlier stage job for integrated land-use planning and cropland held-replenish balance in Henan province.
Soil water content forecast is base work for cropland irrigation timely.
Performing the research of this aspect has very important theoretical and practical meaning to carry into conversion of cropland to forest engineering and improve environment.
PIK succeeded in idling about 25 percent of American cropland.
Most of the villagers survive off tiny plots of cropland.
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