Application of Fuzzy Analytical Hierarchy Process on the Study of Tibetan Grassland Degradation
Considering on the causes of Tibetan grassland degradation and the effects of restoring measures,the quantitative research on the causes of Tibetan grassland degradation and the efficiency of restoring measures was made using fuzzy analytical hierarchy process.The results showed that the contribution rates of overgrazing and extreme climate and adverse natural environments were 45.6 ％ and 30.43 ％,respectively,which were the main factors of Tibetan grassland degradation.The contribution rate of damage caused by rats,pests and weeds was 11.4％.The weight values of the factors of treatment measures to general objective were as follows:enclosure grasslands and rotational graze (0.2078) ＞ cultivated grassland (0.1459) ＞ the control of grazing intensities (0.1402) ＞ controlling rats,pests and weeds (0.1337) ＞ stopping unauthorized mining and devouring the herbage (0.1211) ＞ fertilizing,mending sowing and loosening soil (0.1059) ＞ optimizing structure of animal-flock(0.0939) ＞ selecting and cultivating fine herbage (0.0515).Enclosure grasslands and rotational graze were effective measures in preventing Tibetan grassland degradation.Other measures could not be ignored as well.In a word,controlling Tibetan grassland degradation is a comprehensive process.
TibetGrassland degradationFuzzy analytical hierarchy process
NETL
NSTL
万方数据
维普
