المناشط البشرية و أثرها في تدهور البيئة الطبيعية بمنطقة الثمامة : دراسة في حماية البيئة

الملخص EN

Thumama area locates about 90 kilometers North West of Riyadh city.

It is one of the most recreational areas.

It includes several parks, rest houses, heritage village and Janadrya, in addition to natural areas including sandy hills, gardens, natural pastures and valleys.

It includes rough plain areas like Alorma hills and their beautiful sloping areas.

The climate of this area is dry.

Rains fall in Spring and Winter seasons.

In this area several types of plants grow (about 213 types of plants) classified in 43 plant groups.

This area attracts a lot of people for its advantages.

This encouraged establishment of several unstudied projects and human activities which negatively affected the natural environment of the area.

The main factors which affected this area include early random and permanent grazing which caused several long life plants to disappear.

This appears in the open areas.

The negative practices of picnickers and campers including driving cars and motorbikes in large numbers, as well as the several land and random roads caused earth erosion, grooving and pressing on plants which changed soil components.

In addition to the carelessness and indifference of picnickers who do not care for environment.

They throw waists and cut plants.

All these negative practices caused deterioration of plantation.

Several plants disappeared and undesired plants appeared.

As well as poor plants which cover soil in open areas compared to protected areas like Thumamah Park.

Animals migrated as they lost their loggings.

Therefore, the competent authorities should take the necessary procedures to control deterioration of this area and to rehabilitate affected areas.