首页
登录
职称英语
Seeding a forest with nonnative species after a fire can impede native plant
Seeding a forest with nonnative species after a fire can impede native plant
游客
2024-01-10
78
管理
问题
Seeding a forest with nonnative species after a fire can impede native plant regeneration and spread invasive species in vulnerable fire-affected soils. Moreover, native seed sources are almost always sufficient for early nature reestablishment of native species, so planting should be considered only when natural regeneration is unlikely. Replanting dense stands of fast-growing conifers—a common postfire management practice—truncates the biologically rich early stage of ecological succession and can increase the severity of future fires. Other treatments should be carefully scrutinized for their potential to spread noxious weeds. For instance, straw much applied extensively to reduce erosion after the 2002 Hayman Fire in Colorado was contaminated with cheatgrass, an invasive grass difficult to control or eradicate once established. [br] The passage implies which of the following about native plant regeneration in forests after a fire?
选项
A、It is hampered by the changed nature of the fire-affected soils.
B、It will generally occur without the human interventions of reseeding or replanting.
C、The likelihood of its success increases when forest managers have on hand a good supply of native seed sources.
D、Native plants will inevitably have to compete with nonnative plants.
E、The earlier nature reestablishment occurs, the more complete it will
答案
B
解析
根据第二句,当地种子的资源几乎总是足够的,因此不受到人类的影响也可以发生自然再生。选项B正确。A项文章第一句确实提到土壤性质发生了变化,但是没说自然再生的进程会受到土壤性质的变化的阻碍。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3349482.html
相关试题推荐
HAPLESS:A、fortuitousB、fortunateC、fortifiedD、forbiddenE、forestalledB
FIRE:WOOD::A、motor:boatB、sunlight:forestC、oil:waterD、gears:bicycle
Duringthemid-twentiethcenturytheUnitedStatesbeganapolicytowardNative
Forgenerations,NativeAmericansusedmythsandlegendstoexplainthemysterio
Althoughplantandanimalspeciesthatbecomeestablishedinecosystemswhereth
Althoughmanyswimmersfearencounteringjellyfishintheocean,mostspeciesar
Gwen’sambitiousdeserthikewasimpededbytheheatthatsappedherstrengthan
Commercialtradeinendangeredspeciesofwhaleswassuspendedgloballyin1986,
NativeAmericanpottersoften(i)______theshortcutsofferedbymoderntechnolog
Recentscholarshiphasquestionedthe(i)________oftropicalforestsaroundthe
随机试题
Themultinationalcorporationwasmakingatake-over______forapropertycompany
【B1】______[br]【B5】______[originaltext]OneofAmerica’smostimportant(26)
某期货交易所内的执行价格为450美分/蒲式耳的玉米看涨和看跌期权,当标的玉米期货价格为400美分/蒲式耳时,看跌期权的内涵价值为()。A、看跌期权的内
[originaltext]W:Goodafternoon.Let’sstartwithamajorglobalproblem,espec
绞窄性肠梗阻可表现()。A.腹部有压痛、反跳痛、肌紧张 B.血压、脉率不稳定
预应力混凝土桥梁用锚具产品不合格评定标准包括()。A.效率系数小于0.95
蒸发池施工应符合的规定有()。A、用取土坑作蒸发池时与路基坡脚间的距离不应小于
材料题 根据以下材料,回答89-92题 某上市公司已上市8年,至2015年1
下列关于外商投资企业组织形式的表述中,符合外商直接投资法律制度规定的有()。A.
下列经济业务中,会使资产和权益总额同时增加的有()。A、用银行存款购入一台机器设
最新回复
(
0
)