Gabaɗaya, wanene ya fi kowa sanin menene tsire-tsire masu rarrafe, tun da kalmar »deciduous» tana nan sosai a cikin kalmomin yau da kullun. Yanzu, zaku iya tunanin cewa waɗannan shuke-shuke suna rasa ganyayensu ne kawai a damuna-damuna, amma ... me zan faɗa muku cewa wasu jinsunan wurare masu zafi suma sun rasa su a wani lokacin shekara?
Tun da wannan batun yana da ban sha'awa sosai, ban so in daina magana da ku game da shi ba. A) Ee za ku kara sani game da tsire-tsire masu yankewa. 🙂
Menene tsire-tsire masu tsire-tsire?
Halittun shuke-shuke sun daɗe suna jujjuyawa (musamman, tun zamanin Cambrian), suna daidaitawa sosai kuma suna dacewa da sauye-sauyen muhalli daban-daban da mazaunin su ke ciki. Saboda haka, da kuma la'akari da cewa ba mu da yanayi iri ɗaya a duk duniya, a yau za mu iya jin daɗin ɗimbin tsire-tsire.
Waɗannan ana iya rarraba su ta hanyoyi da yawa, amma lokacin da muke son tsara lambu abin da muke son sani a sama shi ne yadda halin ganyayenta yake, ko kuma a wata ma'anar: idan suka rasa su duka a wani lokaci na shekara (yanke hukunci) ) ko kuma idan suka yi akasin haka sai su sauke su kadan kadan (mara dadi). Na farko suna da ban sha'awa sosai, tunda za su iya ƙarewa da ganyayen kafin lokacin sanyi mafi sanyi na shekara ya fara (Acer sp, Fagus sp, Celtis sp, da dai sauransu), ko akasin haka kafin lokacin dumi da dumi (Misali, shi adansonia digitata ko Tsarin Delonix).
Me yasa ganyayenta suke canza launi?
fagus sylvatica (Beech) a lokacin kaka.
Ganye kamar yadda muka sani, suna cikin mafi yawan lokuta kore, wanda shine na chlorophyll. Wannan launin, ban da bayar da launi, yana da mahimmanci ga shuke-shuke su yi hotuna (wato, shan makamashi daga rana don canza shi zuwa makamashi).
Matsalar ita ce a cikin yankuna masu zafi da bushe akwai nau'ikan tsire-tsire da yawa waɗanda suka zaɓi sauke su. Yana iya zama kamar wata babbar matsala ce, amma ba matsala ce mai gaske ba: idan yanayi ya inganta, za su iya dawo da wasu abubuwan abinci da aka yi amfani da su don samar da su.
Amma me yasa suke canza launi? To, wannan haka yake saboda lokacin da tsire-tsire suka lura (ko dai faɗuwar yanayin zafi, ko ƙarancin ruwan sama) daina ciyar da wadancan ganyen. Kuma idan basu sami ruwa ba, kadan kadan zasu bushe. Don haka, ba a samar da chlorophyll. Wannan shine lokacin da sauran launuka (masu launin ja, ko na lemo ko na rawaya) suka fara zama bayyane..
Wannan kyakkyawan canji na launin launi yana biye da faɗuwar ganyayyaki.
Me kuka gani game da wannan batun? Idan kuna buƙatar misalai na bishiyun bishiyun, Latsa nan .
Monica, Yi haƙuri Na sake yin tsokaci game da labarinku akan bishiyoyin bishiyoyi. Na same shi matalauci kuma an ba shi labari, shi ma yana cikin damuwa game da faduwar launin launi. Ina ganin ya kamata ku kara karatu ...
Akwai fasali?
Sannu, wane shakku ko shakku kuke da shi? 🙂
A cikin labarin muna magana game da halaye na tsire-tsire waɗanda suka rasa duk ganye a wani lokaci a cikin shekara.
Na gode.