草甸草原健康评价的活力-组织力-恢复力指数和基况-活力-组织力-恢复力指数

VOR and CVOR indices for health evaluation of meadow steppe

本文定量评估了内蒙古草甸草原的基况(C)、活力指数(V)、组织力指数(O)、恢复力指数(R),建立了评价草甸草原的活力-组织力-恢复力(VOR)、基况-活力-组织力-恢复力(CVOR)模型,采用VOR、CVOR指数评价了不同草地利用方式的草地健康状况,结果表明:过度放牧会使草甸草原的活力和恢复力降低。而割草地,除在警戒状态的割草地外,其草地健康的活力和恢复力指标都较好。Pearson相关分析双尾t检验表明VOR、CVOR模型与基况不相关,与活力、组织力、恢复力均通过了0.01显著性检验相关性显著。

Basal condition(C),vigor index(V),organization index(O),and resilience index(R)o meadow grasslands in Inner Mongolia were quantitatively evaluated,and the vigor-organization-resilience(VOR)and basal-vigor-organization-resilience(CVOR)models for evaluating meadow steppe were established.VOR and CVOR indices were used to evaluate the health status of grassland in different grassland utilization patterns.The results showed that overgrazing reduced the V and R of meadow grassland.In contrast,the hay grassland had better V and R except for it’s in the alert state.Pearson correlation analysis two-tail T-tes showed that VOR and CVOR models were not correlated with base conditions,but were significantly correlated with vigor,organization and resilience through 0.01 significance test.