نتایج جستجو برای: grassland management

تعداد نتایج: 860566  

1990
Colin D. Meurk Susan Walker Roger S. Gibson Peter Espie

Changes in vegetation from 1990 to 2000 were examined at 10 high country localities, representing four grassland types: fescue tussock (Festuca novae-zelandiae), snow tussock (Chionochloa rigida), red tussock (C. rubra), and silver tussock (Poa cita). At each locality, three treatments were established: ambient sheep+rabbit grazing, rabbit grazing only, and no grazing. The mutivariate methods o...

2014
Zhimin Du Yan Xie Liqun Hu Longxing Hu Shendong Xu Daoxin Li Gongfang Wang Jinmin Fu

Grassland managements can affect carbon (C) and nitrogen (N) storage in grassland ecosystems with consequent feedbacks to climate change. We investigated the impacts of compound fertilization and clipping on grass biomass, plant and soil (0-20 cm depth) C, N storage, plant and soil C: N ratios, soil microbial activity and diversity, and C, N sequestration rates in grassland in situ in the Natio...

2010
Qingwei Duan Xiaoping Xin Guixia Yang Baorui Chen Hongbin Zhang Yuchun Yan Xu Wang Baohui Zhang Gang Li

China, with wide grassland areas of the second rank throughout the world, is faced with a severe challenge on how to manage its vast and degenerating/degenerated grassland. Computer and network technologies are more and more widely applied in grassland production, research and education, which is just a greatly encouraging field. Tremendous achievements have been made in grassland management de...

2014
Owen Woodberry Jess Millett-Riley Steve Sinclair Ann E. Nicholson

The Victorian State Government is reserving 15,000 hectares of land to protect native grasslands in to the west of Melbourne, Australia, to be managed by the Department of Environment and Primary Industries (DEPI). The WGR currently contains a mixture of high quality native grasslands, degraded grasslands and non-native vegetation including improved pasture and cropland. Managing these areas fo...

2014
Anja Madelen Ödman Pål Axel Olsson

Understanding the land use history has proven crucial for the conservation of biodiversity in the agricultural landscape. In southern Sweden, very small and fragmented areas of the disturbance-dependent habitat xeric sand calcareous grassland support a large number of threatened and rare plants and animals. In order to find out if historical land use could explain variation in present-day habit...

2017
Douglas Johnson Douglas H. Johnson

Habitat fragmentation exacerbates the problem of habitat loss for grassland and wetland birds. Remaining patches of grasslands and wetlands may be too small, too isolated, and too influenced by edge effects to maintain viable populations of some breeding birds. Knowledge of the effects of fragmentation on bird populations is critically important for decisions about reserve design, grassland and...

2016
Jiao Chen Haiping Tang Vincenzo Torretta

Overgrazing has caused vegetation destruction and soil degradation in Leymus chinensis grassland, the widely distributed type of grassland in northern China. To restore the degraded ecosystem, grazing exclusion was implemented in 1979, 1999, and 2004. However, changes in the vegetation and soil organic carbon (SOC) in different years of grazing exclusion have not been thoroughly elucidated. Thi...

2015
Dandan Xu Xulin Guo

Grassland ecosystem is one of the largest ecosystems, which naturally occurs on all continents excluding Antarctica and provides both ecological and economic functions. The deterioration of natural grassland has been attracting many grassland researchers to monitor the grassland condition and dynamics for decades. Remote sensing techniques, which are advanced in dealing with the scale constrain...

ژورنال: علوم آب و خاک 2015
زرین کفش, منوچهر, شاهویی, سید صابر, ویسانی, وریا, پارسامنش, نوشین,

Reduction of quality and soil productivity due to organic carbon losses is one of the most important consequences of land use changes, that creates irreparable effects on the soil. To evaluate the land use effect on the amount of soil organic carbon in Vertisols, Sartip Abad series with extent of 1850 hectare in south of Bilehvar area in Kermanshah province was studied by using the completely r...

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