نتایج جستجو برای: rangeland ecosystem
تعداد نتایج: 85678 فیلتر نتایج به سال:
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...
Variable flows of food, water, or other ecosystem services complicate planning. Management strategies that decrease variability and increase predictability may therefore be preferred. However, actions to decrease variance over short timescales (2-4 y), when applied continuously, may lead to long-term ecosystem changes with adverse consequences. We investigated the effects of managing short-term...
Rangelands are the most important ecosystem for carbon sequestration. Knowledge of plant response to grazing is one of important requirements for rangeland management. Stocking rate is one of main factors in destruction of the vegetation cover in rangeland ecosystems. Livestock grazing has the potential to substantially alter carbon storage in grassland ecosystem. This study examined the effect...
One of the most important issues in structure-function relationship modeling is that each rangeland has numerous functions and each of them can provide the most benefits in a certain state of that ecosystem. In fact, relationship between structure and function can be varied in different states. After presentation of the Linear Structure-Function Model based on the Clementsian succession theory,...
Subalpine rangeland as a rara avis ecosystem is very important because ofecological features. Consistency and resistance of this ecosystem is so frangible and itsnatural equilibrium is instable due to the effects of biotic and abiotic factors. The landslideas one of negative consequences in upland area is seen in Masoleh watershed (north ofIran). This study has investigated the roles of biotic ...
چکیده ندارد.
1 Texas AgriLife Research, Texas A&M System, Vernon TX 76384 2 Department of Wildland Resources, Utah State University, Logan, UT 84322-52305 3 Centre for the Management of Arid Environments, Locked Bag 22, Kalgoorlie, WA 6433, Australia 4 United States Department of Agriculture-Natural Resources Conservation Service, Springfield, CO 81073 5 United States Department of Agriculture-Natural Resou...
Rangeland management is one of the basic items in ecosystem management and its purpose is the optimal use of rangelands in order to achieve the desired yield and maintain the stability of rangeland ecosystems. Rangelands play an infrastructural role in the countrychr('39')s economy and pave the way for achieving the goals of sustainable development. However, due to the importance of these resou...
introduction the complexity of natural ecosystem, as the rangelands, is caused to propose the different approaches toevaluatethe ecosystem on the basis of sustainable and systematic management. study on the interaction connectionsbetween plants and biotic and abiotic factors in the rangeland ecosystem can be achieved by relationsofmanagerial strategies in order to conduct the rangeland health. ...
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