echinacea purpurea is an herbaceous perennial plant as members of the asteraceae family. it is one the important medicinal plant in pharmacy industrial. active substances of echinaceae are amplifier of body's immune system and antivirus. echinacea is not native to iran. the phytochemical traits of medicinal plants depend on ecological conditions involving growing areas, climate conditions; vari...

Poverty alleviation linked to agricultural intensification has been achieved in many regions but there is often only limited understanding of the impacts on ecological dynamics. A central need is to observe long term changes in regulating and supporting services as the basis for assessing the likelihood of sustainable agriculture or ecological collapse. We show how the analyses of 55 time-serie...

suitability analysis is a prerequisite for sustainable agricultural production and it involves evaluation of the environmental parameters. the development and creation of appropriate points for this land use without considering environmental capability will result in the appearance of several ecological, economic, and social problems. the multi-criteria decision making (mcdm) models were used f...

agricultural sustainability refers to the ability of a cropping system to produce, without causing irreversible damage tothe ecosystem. there is an increasing need to view cropping systems and identify management practices in a holisticindicator-based impact assessment. the main objective of this study was to compare and rank the cropping systems of themarvdasht plain in fars province; in order...

extended abstract 1. introduction in dry areas, crop yield is generally low and there are limitations in fulfilling goals such as increasing the area under cultivation and reducing the cost of production. in such circumstances, the agricultural activity is limited to crops that can tolerate the harsh climatic conditions, secure farmers' income, and tolerate saline and limited water resources in...