Puas yog shelterwood txiav kim?

Cov txheej txheem:

Puas yog shelterwood txiav kim?
Puas yog shelterwood txiav kim?

Video: Puas yog shelterwood txiav kim?

Video: Puas yog shelterwood txiav kim?
Video: Puas yog luag dag koj xwb | Kawm muas 2024, Hlis ntuj nqeg
Anonim

Txawm hais tias feem ntau siv rau hauv cov hnub nyoog laus, nws kuj tseem siv tau rau qee qhov tsis sib xws thaum muaj hnub nyoog rov tsim dua tshiab. Shelterwood harvesting feem ntau yog qhov nyuaj tshaj plaws thiab raug nqi thaum pib txiav thaum cov ntoo tsis zoo tshaj plaws raug tshem tawm.

Puas xaiv txiav kim dua?

(Cons) Qhov tsis zoo ntawm kev xaiv-txiav: • Nqis thiab siv sijhawm ntev • Qee hom yuav tsis rov tsim dua tshiab (rov ua dua tshiab) sai li sai tau • Muaj ntau qhov kev puas tsuaj rau huab cua xws li dej khov, cua daj cua dub, thiab hluav taws kub • Muaj ntau cov stumps thiab Lwm cov khib nyiab pov tseg tom qab • Tshem tawm cov ntoo zoo tshaj plaws, uas nws cov noob xav tau los khaws hav zoov …

Dab tsi yog kev txiav ntoo?

Disadvantages

  • Ntawm tag nrho cov kab lis kev cai uas cuam tshuam nrog kev txiav ib nrab, nthuav tawm cov ntoo tawm mus rau cua. …
  • Cov nqi sau ntau dua, piv nrog cov tshuab clearcut, yog tias cov ntoo raug tshem tawm (ob-theem sau).

Puas yog shelterwood txiav cov hnub nyoog?

Txiav-txiav thiab cov txheej txheem shelterwood feem ntau ua rau cov qauv muaj hnub nyoog xaiv txiav feem ntau ua rau cov qauv tsis muaj hnub nyoog. Kev siv cov noob ntoo tuaj yeem ua rau lub hnub nyoog muaj hnub nyoog rau kev sawv tshiab yog tias kev tsim kho tshiab tshwm sim sai; yog tias kev tsim dua tshiab tshwm sim maj mam, qhov tshwm sim tuaj yeem ua rau muaj hnub nyoog tsis sib xws.

Lub chaw tsim khoom Shelterwood yog dab tsi?

Shelterwood cuttings yog hais txog kev vam meej ntawm kev txiav hav zoov ua rau tsim kom muaj ib tiam tshiab ntawm cov noob qoob loo ntawm ib hom lossis pab pawg ntawm hom yam tsis cogCov txheej txheem silvicultural no ib txwm siv. nyob rau hauv hav zoov uas suav hais tias paub tab, feem ntau tom qab ob peb thinnings.

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