西北林学院学报2017，Vol.32Issue(5)：150-153,4.DOI:10.3969/j.issn.1001-7461.2017.05.26
石羊河下游干旱荒漠区植物优先保护级别研究
Evaluation of Conservation Priority Classes of Plant Species in the Lower Reaches of Shiyang River
摘要
Abstract
This paper mainly studied the extinction risk and the classes of conservation priority of wild plants in the lower reaches of Shiyang River by using quantitative methods,based on field investigation from 2014 to 2016,as well as literature consulting.The degree of endangerment was evaluated quantitatively by 5 indices:distribution frequency of line-transect,distribution frequency of sample plot,existent abundance,distribution mode,and exclusiveness.The results showed that there were 7 endangered species,9 vulnerable species,10 near threatened species and 252 safe species in the lower reaches of Shiyang River.A comprehensive evaluation was carried out on the order of priority for conservation of plant species by endangerment index,genetic loss index and utility value index.Ten species were the first rank for protection,18 were in the second rank,and 250 were non-protection species.关键词
民勤县/濒临消失风险/优先保护Key words
Minqin County/extinction risk/conservation priority分类
农业科技引用本文复制引用
曾新德,孙学刚,闫好原,张有佳,胡生新,王承勋,张杰..石羊河下游干旱荒漠区植物优先保护级别研究[J].西北林学院学报,2017,32(5):150-153,4.基金项目
甘肃省科技支撑计划项目(1304FKCH100,144NKCH057) （1304FKCH100,144NKCH057）
“甘肃民勤连古城国家级自然保护区第二期综合科学考察”基金项目. （）
