Momwe Mungawerengere Zamoyo Za Nkhalango Kuti Mufufuze Zachilengedwe
Kufunika kwa kafukufuku wa zachilengedwe kukukulirakulira pamene chidziwitso cha padziko lonse cha kusintha kwa nyengo ndi kuwonongeka kwa chilengedwe chikuwonjezeka. Chinthu chimodzi chofunikira pa kafukufuku wa zachilengedwe ndikumvetsetsa biomass ya m'nkhalango. Biomass ya m'nkhalango imasonyeza kuchuluka kwa zinthu zachilengedwe zomwe zimapezeka m'nkhalango ndipo ndi yofunika kwambiri pa maphunziro ambiri a zachilengedwe, kuphatikizapo omwe amayang'ana kwambiri pa kayendedwe ka mpweya, kupirira zachilengedwe, ndi zamoyo zosiyanasiyana. Kuyerekeza biomass ya m'nkhalango ndi njira yovuta, koma ndi njira zoyenera, ofufuza angapeze deta yolondola komanso yodalirika. Nkhaniyi ikambirana njira zosiyanasiyana zomwe zingagwiritsidwe ntchito kuwerengera biomass ya m'nkhalango pankhani ya kafukufuku wa zachilengedwe.
Kumvetsetsa Zamoyo Zam'nkhalango
Zomera za m'nkhalango nthawi zambiri zimatanthauzidwa ngati unyinji wonse wa zinthu zachilengedwe zomwe zimapezeka m'nkhalango panthawi inayake. Izi zikuphatikizapo zamoyo zonse monga mitengo, zitsamba, udzu, ndi zamoyo zina, komanso zinthu zamoyo zakufa monga masamba ndi tsinde lakufa. Kuyeza zomera za m'nkhalango ndikofunikira kwambiri kuti timvetsetse momwe zachilengedwe zimayendera, kukhazikika kwa nkhalango, komanso gawo lawo pa kayendedwe ka mpweya padziko lonse lapansi.
Njira Yoyezera Zamoyo Zam'nkhalango
1. Kuyeza Mwachindunji
Njira yolunjika imaphatikizapo kutenga sampuli ya mitengo ndi zomera zina m'munda. Komabe, njira iyi nthawi zambiri siigwira ntchito m'nkhalango zazikulu chifukwa cha ntchito yambiri komanso nthawi yofunikira. Njira zotsatirazi zimagwiritsidwa ntchito poyesa mwachindunji:
– Kusankha Chiwembu cha Zitsanzo: Dziwani chiwembu cha chitsanzo mkati mwa nkhalango chomwe mukuyezera. Kukula kwa chiwembu komwe kumagwiritsidwa ntchito kwambiri ndi 10×10 metres kapena 20×20 metres, kutengera kuchuluka ndi kukula kwa zomera.
– Muyeso wa Kukula kwa Mtengo: Yesani kukula kwa mtengowo pa kutalika kwa bere (DBH), komwe nthawi zambiri kumakhala mamita 1.3 kuchokera pansi. Komanso, yesani kutalika kwa mtengowo pogwiritsa ntchito clinometer kapena chida china choyezera.
- Kuwerengera Volume ndi Biomass: Gwiritsani ntchito ma equation a allometric a dera lomwe limagwirizanitsa DBH ndi kutalika kwa mtengo ndi biomass. Mwachitsanzo, equation ya Mayom kapena linear regression.
Kuyeza mwachindunji kumapereka deta yolondola kwambiri m'magawo ofotokozedwa, koma nthawi zonse sikuyimira nkhalango yonse.
2. Njira Yoyezera Zinthu Zonse
Njira yogwiritsira ntchito allometric imagwiritsa ntchito ubale wa masamu pakati pa miyeso ya mitengo (monga DBH kapena kutalika) ndi biomass. Ma equation a allometric amapangidwa kudzera mu kusanthula kwa ziwerengero za deta yochokera ku mitengo yambiri yomwe yadulidwa ndikuyesedwa kuchuluka kwake. Ma equation ena odziwika bwino a allometric omwe amagwiritsidwa ntchito poyesa biomass ndi awa:
– Chave Equation: Equation iyi imagwiritsidwa ntchito nthawi zambiri m'malo osiyanasiyana otentha ndipo imachokera pa kukula kwa mitengo, kutalika kwa mitengo, ndi kuchuluka kwa matabwa.
– Equation ya Brown: Amagwiritsidwa ntchito makamaka poyesa kuchuluka kwa zomera m'nkhalango za m'madera otentha poganizira zinthu monga kutalika kwa mitengo ndi DBH.
Zolakwika pakuyerekeza kwa biomass pogwiritsa ntchito njira yowerengera zinthu zitha kuchepetsedwa posankha equation yomwe ikugwirizana bwino ndi mikhalidwe yakumaloko ndi mtundu wa zomera zomwe zaphunziridwa.
3. Kuzindikira Kutali
Ukadaulo wozindikira kutali ndi wothandiza kwambiri poyesa biomass ya m'nkhalango, makamaka m'madera akuluakulu ovuta kufikako. Kuzindikira kutali kumaphatikizapo kugwiritsa ntchito zithunzi za satelayiti, Kuzindikira Kuwala ndi Kujambula (LIDAR), kapena kujambula zithunzi za m'mlengalenga kuti mupeze chidziwitso chokhudza kapangidwe ndi kapangidwe ka nkhalango.
– Zithunzi za Satellite: Zithunzi za Satellite kuchokera ku ma satellite a Landsat, Sentinel, kapena MODIS zingagwiritsidwe ntchito kuyerekeza kuchuluka kwa nthaka ndi zomera monga NDVI (Normalized Difference Vegetation Index) zomwe zimagwirizana ndi biomass.
– LIDAR: Ukadaulo wa LIDAR umagwiritsa ntchito ma laser poyesa mtunda pakati pa sensa ndi chinthu, zomwe zimathandiza kukonzanso nkhalango mwatsatanetsatane mu 3D. LIDAR ndi yothandiza kwambiri poyesa kutalika kwa mitengo ndi kapangidwe ka nkhalango.
Kuphatikiza deta yowunikira kutali ndi deta ya m'munda ndikofunikira kwambiri poyesa ndi kutsimikizira mitundu yowerengera za biomass.
4. Kugwiritsa Ntchito Zitsanzo za Zomera
Zitsanzo za zomera ndi zida zoyeserera zomwe zimatha kutsanzira njira zachilengedwe m'nkhalango ndipo zingagwiritsidwe ntchito kuwerengera zamoyo zam'nkhalango. Zitsanzozi nthawi zambiri zimadalira malamulo a zachilengedwe ndi ubale womwe ulipo pakati pa zinthu zachilengedwe ndi momwe zomera zimayankhira. Zitsanzo zina za zomera zomwe zimagwiritsidwa ntchito kwambiri ndi izi:
– Chitsanzo cha LPJ-GUESS (Lund-Potsdam-Jena General Ecosystem Simulator): Chitsanzochi chikuwonetsa momwe magulu a zomera amagwirira ntchito m'malo osiyanasiyana achilengedwe ndipo chingapereke ziwerengero za zomera za m'nkhalango kutengera zochitika za kusintha kwa nyengo.
– Chitsanzo cha ED (Ecosystem Demography): Chitsanzochi chimatsanzira kusintha kwa kapangidwe ka zachilengedwe ndi ntchito zake kutengera momwe mitengo imagwirira ntchito komanso momwe imagwirira ntchito m'nkhalango.
Mitundu ya zomera imafuna deta yowunikira mwatsatanetsatane ndi kutsimikizira kudzera mu deta ya m'munda kapena kuzindikira kutali kuti iwongolere kulondola.
Mavuto ndi Mwayi
Ngakhale pali njira zosiyanasiyana zowerengera zamoyo za m'nkhalango, njira iliyonse ili ndi zovuta zake komanso zofooka zake. Kuyeza mwachindunji kumangokhala kokha pa masikelo ang'onoang'ono ogwirira ntchito. Njira zowerengera zimafuna deta yatsatanetsatane komanso yachigawo kuti zichepetse kuyerekezera. Kumbali ina, kuzindikira kutali kumafuna ukadaulo wapamwamba komanso wokwera mtengo, ndipo nthawi zambiri deta imafuna kukonzedwa kwina kuti zitsimikizire kulondola.
Kuphatikiza apo, kuphatikiza njira zingapo kumatsegulanso mwayi wowongolera kulondola ndi kukhazikika kwa miyeso ya biomass ya m'nkhalango. Mwachitsanzo, kuphatikiza kuzindikira kutali ndi njira zoyezera kapena zitsanzo za zomera kungapereke ziwerengero zolondola komanso zodalirika.
Mapeto
Kuyerekeza kuchuluka kwa zomera m'nkhalango ndi gawo lofunika kwambiri pa kafukufuku wa zachilengedwe, zomwe zimafuna njira zosiyanasiyana komanso kumvetsetsa bwino za chilengedwe cha m'nkhalango. Pogwiritsa ntchito njira zoyezera mwachindunji, njira zoyezera zinthu, ukadaulo wozindikira kutali, ndi zitsanzo za zomera, ofufuza amatha kuyerekeza kuchuluka kwa zomera molondola kwambiri komanso molondola. Ngakhale njira iliyonse ili ndi zovuta zake, kuphatikiza njira zingapo kumapereka mwayi wopeza zotsatira zokhazikika komanso zophunzitsa zambiri.
Pamene ukadaulo ndi njira zikupita patsogolo, zikuyembekezeka kuti ziwerengero za zomera za m'nkhalango zidzakhala zolondola kwambiri, zomwe zikupereka chidziwitso chofunikira pa kusunga nkhalango, kasamalidwe ka zachilengedwe, komanso kuchepetsa kusintha kwa nyengo padziko lonse lapansi.
