Abstract: Based on the survey of Mongolian gazelle (Procapra gutturosa) habitats around the Dalai Lake area of Inner Mongolia in 2008, the vegetation type, vegetation coverage, slope, distance from water, distance to grazing point, distance to residential area, and distance to road were selected as the factors for the assessment of habitat suitability, and the 3S technique and fuzzy evaluation were adopted to assess the habitat suitability of the Mongolian gazelle around the Dalai Lake area. Without considering human disturbance, the most suitable, less suitable, and unsuitable habitat areas for Mongolian gazelle were 17.7%, 36.9%, and 45.4% of the total, respectively; with the consideration of human disturbances, the most suitable, less suitable, and unsuitable habitat areas for Mongolian gazelle reduced to 13.0%, 28.3%, and 58.7% of the total, respectively. The comparison of the actual and potential habitats of the Mongolian gazelle showed that the unsuitable habitat area was increased by 29.2%, suggesting that human disturbance could be the main cause of the sharp decrease of suitable habitat for Mongolian gazelle around the Dalai Lake area of Inner Mongolia.  

Key words: spermidine, tomato, saline-alkalinity stress, roots, mitochondria.