worldwide loss of cropland by Lester Russell Brown

Cover of: worldwide loss of cropland | Lester Russell Brown

Published by Worldwatch Institute in [Washington] .

Written in English

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  • Land use, Rural.,
  • Agriculture.

Edition Notes

Includes bibliographical references.

Book details

Other titlesCropland.
StatementLester R. Brown.
SeriesWorldwatch paper ;, 24
LC ClassificationsHD156 .B7
The Physical Object
Pagination48 p. :
Number of Pages48
ID Numbers
Open LibraryOL4746776M
ISBN 100916468232
LC Control Number78064454

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@article{osti_, title = {Worldwide loss of cropland}, author = {Brown, L R}, abstractNote = {Few things will affect future human well-being more directly than the balance between people and cropland.

If recent population and cropland trends continue, that balance will almost certainly be upset, leading to economic uncertainty and political instability. The worldwide loss of cropland. [Lester R Brown] -- This paper focuses on the critcally growing shortage of cropland in a world faced with increasing populations.

Book: All Authors / Contributors: Lester R Brown. Find more information about: ISBN: OCLC Number: Description: 48 pages: graphs ; 22 cm. Series. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Eroding Soils and Shrinking Cropland: Soil Erosion: Wind and Water The thin layer of topsoil that covers much of the earth's land surface is the foundation of civilization.

Today perhaps a third or more of that foundation, the world's cropland, is losing topsoil through erosion faster than new soil is forming, thereby reducing the land's. The loss of cropland to urban expansion is an issue of global concern affecting the net supply of high quality farmland [1–3].

In the United States, total cropland has been declining since and by it accounted for 18% ( million hectares (M ha)) of land use [4]. While the overall rate of lossCited by: 7. Worldwide, erosion on cropland averages about 30 t/ha-yr and ranges from to t/ha-yr (Pimentel et al., ). As a result of soil erosion, worldwide loss of cropland book the last 40 years about 30% of the world’s arable land has become unproductive and, much of that has been abandoned for agricultural use (Kendall and Pimentel, ; WRI, ).

The precise estimation of the global agricultural cropland- extents, areas, geographic locations, crop types, cropping intensities, and their watering methods (irrigated or rainfed; type of irrigation) provides a critical scientific worldwide loss of cropland book for the development of water and food security policies (Thenkabail et al., ).

By yearthe global human population is expected to grow. It is commonly reported that since World War II, we have lost some million hectares of agricultural land from degradation, and this loss continues at the alarming rate of some 7 million hectares per year.

Our agro-ecosystems globally are facing a serious challenge when it comes to reversing the loss and rehabilitating abandoned lands.

To feed its billion people, China may soon have to import so much grain that this action could trigger unprecedented rises in world food prices. In Who Will Feed China: Wake-up Call for a Small Planet, Lester Brown shows that even as water becomes more scarce in a land where 80 percent of the grain crop is irrigated, as per-acre yield gains are erased by the loss of cropland to.

The substitution of forests for cropland (% of the forest lost) is responsible for about 52% of this increase in soil loss. At the same time, a forest area gain of about million km 2 occurred during the study period, resulting in a net loss of ~ million km 2.

Amid growing concerns about topsoil loss, no-till and cover crops are becoming more popular, according to the US Census of Agriculture.

Farmers are losing cropland and irrigation water to non-farm uses. The conversion of cropland to other uses looms large in China, India, and the United States.

China, with its massive industrial and residential construction and its paving ofroads, highways, and parking lots for a fast-growing automobile fleet, may be the world leader in.

Meanwhile, since forest and wetland are species-rich habitats with valuable ecosystem services, the loss of forest and wetland due to cropland expansion is noticeable not only in Hubei but worldwide (Verhoeven and Setter, ; Han et al., ; Guida-Johnson and Zuleta, ).

The – MODIS MCD12Q1 land cover data and MOD17A3 NPP data were used to calculate changes in land cover in China and annual changes in net primary productivity (NPP) during a year period and to quantitatively analyze the effects of land cover change on the NPP of China’s terrestrial ecosystems.

The results revealed that during the study period, no changes in land cover type. India has the highest net cropland area at %, followed by the U.S. at %, China at % and Russia with %.

Together, the top four countries account for % of the world’s net cropland. Worldwide, around three million hectares of agricultural land are lost each year because the soil degrades and becomes unusable due to erosion, which is when soil. Concern has grown over potential conversion due to the loss of habitat and biodiversity [7, 8], increased soil erosion and water pollution [9, 10], and net release of carbon dioxide to the atmosphere typically associated with changes from grassland to cropland [11, 12].

The JRC noted that decreasing productivity can be observed on 20% of the world’s cropland, 16% of forest land, 19% of grassland, and 27% of rangeland. “Industrial agriculture is good at. Currently, cropland soils in the U.S.

are a net source of GHG emissions of around Tg CO 2-eq year, almost entirely due to N 2 O. Soil C has increased on most cropped soils by 46 Tg CO 2 yr −1 due to a long-term trend of increased crop-residue production, reductions in tillage intensity, cropland conversion to pasture/hay, and set-aside of.

WinField United Canada is excited to introduce CROPLAN® seed to its Canadian owners. High-performing CROPLAN® seed was established in and is backed by the expertise and insights to help farmers reap maximum yield potential from each field. The “arc of deforestation” along the southern and eastern extent of the Brazilian Amazon is the most active land-use frontier in the world in terms of total forest loss and intensity of fire activity ().Historically, the dominant pattern of forest conversion has begun with small-scale exploration for timber or subsistence agriculture, followed by consolidation into large-scale cattle.

Non-cultivated cropland includes permanent hay land and horticultural cropland. Per the National Resources Inventory there are, acres of cropland in the United States. The cropland acres produce most of the food and fiber production for the US and exports to other countries. About 39 square miles of cropland is being lost in the United States each day to soil erosion and competing land development, a study of the.

This statistic shows the total global cropland area, in a projection from to Inthe total global cropland area is expected to be million hectares. Permanent cropland (% of land area) from The World Bank: Data.

List of countries in the workd by cropland area in hectares. Link to historical chart and more food and agriculture statistics. Global food loss and waste per capita inby stage and region Biodegradable municipal waste discarded to landfills Ireland U.S.

volume of food wasteby facility. Cropland values are higher than pastureland values in every region except for the Southeast. In the Pacific region, cropland was worth four times as much as pastureland in ($7, vs $1,) Sincecropland values have risen the most in Pacific States ( percent), while they have fallen the most in the Northern Plains ( percent).

The scientists foresee that loss of cropland will be most severe in Africa and Asia. China alone will l sq km.

“Hotspots of cropland loss tend to. The way we produce food and manage land must change radically if humans hope to avoid catastrophic global temperature rise, according to. Soils face a global threat as population pressure, human development and swelling cities lead to mounting cropland loss.

LONDON, 1 January, – The world is about to surrender some of its richest farmland. As a consequence, crop production by could fall by up to 4% at a time when the planet gains another billion mouths to feed. Subsequent reports will be released at these times: January - To be determined ; Crop Year.

Note: Beginning with the crop, producers may report the same acre of either wheat, barley, oats, rye, and triticale for grain and grazing. That situation can occur when a producer intends to graze cattle in the winter, remove the cattle, and harvest the grain when mature later that spring.

However, widespread adoption of crop-loss prevention methods that build soil health and improve water management on farms can limit these losses. From to. The Most Detailed Map Of The World’s Cropland Shows Where There’s Room To Feed Everyone.

To meet rising global food demand, we need to know where farm production has room to grow. The Great Plains lost about million acres of previously intact grassland to crop production between andaccording to a new report from World Wildlife Fund (WWF).

Across the US and Canada, the loss of grasslands undermines soil health and degrades water quality for downstream communities, while threatening iconic species, including songbirds and water-associated.

This map does not show net loss of cropland. Land converted from other land uses to cropland is not accounted for. Sources. Source: National Resources Inventory, Distributor: USDA-NRCS-RIAD Reliability: NRI sample data are generally reliable at the 95% confidence interval for state and certain broad substate area analyses.

Generally. and steep slopes, but it separates arable and live­ security but im m ediate food needs take priority stock production. This limits or prevents the (M ortim ore and Adams, ).

retu rn of livestock m anure to cropland, which is Greater intensification of cropland use versus greater often vital in raising crop yields and m aintaining loss of biodiversity and GHG emissions from deforesta. Inthe population within lower southern Michigan was mostly farmers.

Farmland acres in Michigan peaked at 19 million in Since then, agricultural land has decreased to 10 million acres. This decline is due to the increase in urban development and the loss of family farming. Between andworld grain yield per hectare climbed by percent a year, ensuring rapid growth in the world grain harvest.

From tohowever, it. The conversion of forests into cropland worldwide has triggered an atmospheric change that, while seldom considered in climate models, has had a net cooling effect on global temperatures, according to a new Yale study.

Loss is becoming more decentralized, Ms. Weisse said. Where 15 years ago Indonesia and Brazil accounted for nearly three-quarters of forest loss worldwide. A brick field on cropland, adjacent to an educational institution in Gafargaon upazila of Mymensingh, has become a threat to locals as well as to the .In addition to loss of cropland, China also faces an extensive diversion of irrigation water to non-farm uses.

This problem is particularly acute in a country where nearly 80 percent of the grain harvest comes from irrigated land. The problem of shrinking resources is compounded by rising grain consumption.

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