huyQn My Dtc, He NQi - VNU Journal of Science

Tap chi Khoa hsc DHQGHN Khoa hsc Tr; nhi6n vA C6ng nghQ 28 (2072)2$-n8

1. M& ttAu

Huong Son ld t€n ggi quen thuQc, l6u tloi cria ngudi d6n Vi€t Nam di5 chi mQt cgm di tich gdm nhidu chira chiAn, dAn

mitiu

kh6c nhau thuQc xd Huong Son, huyQn

M! Dfc,

Hd NQi (thuQc

tinh He

TAy

cfi).

Cung

v6i

c6c ddng su5i, hang dQng,

nhfi

d6,

nrii

non,... t4o ^h6a

ipr'

g+goozotszs.

E-mail: maidh@vnu.edu.vn

D6nh gi6 bi6n dQng lcrp phu thyc vft xd Hucrng Son, huyQn My Dtc, He NQi

Dodn Hucrrg Mai*

Khoa Sinh hqc, Trudng Dqi hpc Khoa hoc Tqr nhi1n, DHQGHN, 334 Nguydn Trdi, Hd N|i, Vi€t Nam Nh4n ngiy l5 th6ng 6ndm2012

T6m

tit.

ThAm thgc vft c6 vai trd to l6n trong ddi s6ng cta con ngudi. MQt m{t, n6 cung c6p cho ta c6c lopi nguy€n li€u

vi

c6c sdn ptrAm khac nhau nhu: g5, thric 6n cho gia sfc, nguy6n tigu tam thu6c, c6y c6ng nghiQp, qud vd h4t... M{t kh6c, n6 c6 vai tro to ldn trong chu trinh

vft

ch6t 4r nhi6n, trong viQc bdo vQ con ngudi tr6nh dugc c

khdi bi rta tr6i, tli6u hda khi hau

vi

chi5 d0 nudc vft 6nh hudng m4nh mC di5n da dnng sinh hgc tr tfuc vflt d Huong Son n6i ri€ng ld r6t cAn thiiit

quan khoa hgc Trung uong quan t6m tu ldu. Tuy thdi ^gian n€n

trong tl6 di6n

vft trong khu bi6n dQng c6c

vflt Huong Son, nguy€n nhdn vd xu hudng bii5n

nhiing gidi ph6p bdo t6n vi ph6t tri€n hQ thrrc vflt noi ddy.

OC tai Auqc thUc hi€n nhim nghidn cuu vd tlanh gi6 sU bii5n dQng cria lop phri thgc vpt tgi

xi

Huong Son, huyQn

M!

Dric, thnnh ph6 He NOi giai tlo4n tu ndm 2000 d6n nim 2009, qua t16 tim ra c6c nguy€n nhAn d6n tdi sg bii5n itQng di€n tich ndy vd d€ xudt c6c gidi ph6p ldm tang qi lg ctre phri.

Ti kh6a: l6p phri thgc vft, bii5n dQng, Huong Son (M! Dric, Hi NQi).

khdng nhiing cl6 ban t{ng cho Huong Son mQt vE cigp tliin m€ ho4c ldng ngudi md cdn uu 6i cho vilng d6t ndy

v6i

ngu6n

tdi

nguy€n thi€n nhi€n phong

pht

cla d4ng

v6i tai

nguy6n sinh hgc, tai nguy6n clQng thgc vft, tai nguy6n nmg ...

Dd c6 nhiAu c6ng trinh nghi€n cr?u vd khu hQ thuc

vft

Huong Son. SU cla d4ng

v6

sinh

cinh,

hi6u rQng hon

ld

sg da d4ng vd c6c hQ

sinh th6i ^ctd tpo cho Huong Son mQt hO thuc vdt vira c6 sd luqng lodi l6n, vira r6t phong phir vO

d4ng sting, d4c biQt cdn

ld noi luu giii

nhi6u 233

234 ^{D.H. Mai lTqp chi l(/roa hlc} DHQGHN , Kroa ^hgc Ty nhi€n od c6ng nghQ 28 (207D 233-238

ng,rdn gen quy hi6m

c6

trong S6ch

Dd

Viet

Nam vA Nghi dinh

^32/CP

cta ^{Chinh pht'}

Huong Son c6 trong danh lpc c6c khu Rimg ^tlflc dpng ViQt Nam d6n

nim

2010 tlugc xdy

dpg bdi

Cuc Ki6m lAm

-

BQ Ndng ^nghiQp

vi

^ph6t

tri€n ndng th6n,

v6i

diQn

tich

^{4.355 ha (CUc}

Ki6m ldm,2003). Tuy nhi&r,

xi

Hucrng Son n6i chung

vi

Rimg

ttic

dung Huong ^Scrn n6i ri6ng hiQn <lang phai d6i mflt

vdi

nhirng th5ch thirc nhu: biiSn d6i khi h{u, sir dpng tai nguy€n chua hqp li, srlc 6p du

lich,..'

N$n

thirc tlugc ^{tAm quan} ffgng cria sg thay e6i ^{tOp phri} thgc

vft vdi

^s1r thay d6i khi

hiu

^vA chAt

luqng

cuQc sling, ddng

thdi voi

mong mutin 6p dgng phuong ^ph6p vi6n th6m vd ^GIS mQt c6ch c6 hi€u ^qud trong tl6nh ^gi6 vd quan

lf

tdi nguy€n thyc

vft,

^aA tai: "Ddnh gid ^bidn dfng

lry

phil thltc ^vQt xd Hrong Son, huyQn

Mi

D*c, Hd

N\f'dd

<lugc thUc hiQn.

2. Phucrng ph6p ^{nghiGn cfim}

- O5i tuqng ^nghiGn ciru ld lop

pht

thvc

vft

x6 Huong Son, huYQn

M!

Dric, He N$i'

-

Thdi gian nghi€n cfiu clugc tri6n khai tu thang 10 nim 2010 iti5n thang

1l nim

²⁰¹²

vli

3 dqt kh6o s6t thUc tlia.

- Pham

vi

nghi€n cr?u t?P trung vdo ^nghi€n cr?u su bi6n ^ctQng

lop pht

thgc

vflt

trong ^c6c giai tlo4n 2000-2006 vd 2006-2009 ^cria khu vgc tai 3 m5c thoi gian: 2000,2006,2009.

- Vflt ligu ^{nghiOn cr?u: ngu6n} tai liQu gdm:

+ Anh Landsat xd Huong ^Son

nlm

^{2000, d0}

phAn gini khdng gian 30m'

+ Anh IKONOS

xi

Huong Son

nlm

2006, dQ phdn

giii

kh6ng gian 0,6m.

+

BAn Od nien trang rung xtr Huong ^Son

nlm

2009

t] l0

1:35000, c6c nghi€n cr?u tlQng,

thgc

vit

trudc ^ddy,

bin

d6 dia hinh, bnn ^dd thriy v6tr,,..

f.

K6t

qui

nghiGn crfru

vi

btrn

lufn

3.1.

Diiu

^ki€n

ttrnhi6n ll,2l

-

Dia hinh: itia hinh tuong ^<t6i pnric t4p so

v6i c6c xd kh6c cing trong ^{huyQn. Phia} Tdy vd Nam cfia xd

li

^{c6c ddy}

^nfi

^el6

^v6i

^{c6 dQ cao}

trung binh

tu

²⁰⁰

^-

^{400m so}

^vdi

^{mgc nu6c}

bi6n. C6c ddy n(ri phia Nam c6 dQ cao thAp hon (tir 100 - 213m) so v6i mgc nu6c bi6n. ^{C5c ddy} nrii phia

Bic

lai tuong dOi

bing

^phing

v6i

^dQ cao

tu 4 - 6m.

C6c vung

ngip

nu6c chii5m

klroing

lO.5% diQn tich a6t

q

nhi6n, cung ^c6p nu6c cho n6ng nghiQp cfing nhu c6c ho4t dQng du lich, ^ctem lgi hiQu qui kinh t6 cao.

- Khi

hdu: xd Huong Son

nim

trong virng lJri hfu nhiQt ddi gi6 ^mr)a v6i 4 mita trong nim, trong d6 c6 mira tl6ng l4nh' Dg em trung binh

nim li

^{85%o,thay d6i}

^tt

^{80-89%. DQ Am kh6ng}

khi

thAp nhAt trong ndm

tfp

trung vdo ^th6ng

Mudi

^mQt vd

Mudi

hai, nhtmg sg sai ^{khSc vA} d0 Am

gita

c6c th6ng trong

ci nlm

khdng lon.

Suong mu5i ve mua ^{cl6 r6t} tritim xdy ^ra. Mua ^dd quan s6t dugc khoing

l0

nlm ^mOt lAn.

- Rimg: ^diQn tich rimg vdo khoing ^2372,97 ha, tAt

ci

d€u thuQc

rimg

tlflc d1rng, chiu sg quin

lf

^{cria Nhd nudc'}

3.2. NghiAn

c*u,

cldnh

gid

biiin ^dQng lop phrt

th1rc vQt xd Hrong Son, huyQn

Mi

Dilrc, Hd NAi 13l

O6 Oann gi6 bi6n tlQng c6c loai hinh lop ^phri thpc

vdt

ctra

x6

Huong Son trong

giai

tlo4n 2000

-

^{2006 vd giai} do4n 2006

-

^{2009, c6c b6n}

OO nien

mng ^lop

^{phri thlrc}

^{vflt tai}

^{tung thdi}

tti€m ndm 2000, 2006 vd 2009 tl6 tlugc ^thdnh

lfp,

sau tt6 tiain hanh ch6ng xi5p c6c ban d6, xdy

D.H. Mai lTqp chi Ktoa hqc DHQGHN, Khoa hgc Tu nhi€n od C6ng nghQ 28 (2072) 233-238 23s

dung bin aO Ui,5n dQne

lo"

phri vd xdy dlmg

ma

^{c6 13} logi hinh cria lcrp phri bao g6m ^diQn tich hfln chuy6n AOi

gita

c6c lopi lop phri qua

2 giai

^{c6c lo4i thim} thgc

vft

vd c6c logi d6t kh6c. Cac

do4n

tr€n.

loai hinh cria l6p phri tlugc m6 h6a nhu bAng

l.

Theo k6t

qui giii

tlor{n inh vi6n th6m d c6c thoi di6m nim 2000, 2006 vd 2009, Huong Son

B6ng l. Md h6a c6c loai hinh l0p pht thlrc v$t

xi

Huong Son,

M!

Dtlc, Hd NQi

Me

13

Rtmg thua, tang cdy bgi

vi

g5 nh6 ph6t tri6n tr€n cdc ctinh nrii tt6 v6i hoflc d sudn v6ch nrii c6 dQ d6c lon

Me

0

^{Trang c6 ph6t tri6n tr,6n} sudn, v6ch nrii d6 v6i Me

4l

^{Rimg thua, trang cdy bgi tr6n nrii d6t}

Me,25

Rimg tr6ng

it.fe37

TMm thgc v$t thty sinh

vi

ngflp nudc MA

3l

OAt nOng nghiQp

Me

33

^{Ddt th6 cu}

Mrn32

Nuong r6y

Ma

34

^{DAt tr6ng} cdy c6ng nehi€p Me

35

^{Nrii dd}

Ma

38

^C6t

DiQn tich lop

pht

xd Huong Son tei c6c thdi vipc giAi tlo6n anh vC tinh vd

bin

<td hign trang th6m thgc

vft

cria x6 tai bang 2:

di6m

nlm

2000,2006

vi

2009 ttuqc th6ng kO tu

Bdng2. Si6n d6i diQn tich l6p phri thgc vQt xd Huong Son tai c6c thdi cli6m nim 2000, 2006 vd 2009

O6,i tuqng Nlm ²⁰⁰⁰ Ndm 2006 Ndm 2009

--- '-'--"

_{Dipn tich}

_{(ha) Ti}

rc

%)

^{DiQn tfch}

(ha)

Ty le

(%)

DiQn tich

(ha)

Tli le (%) t5

t6 l3

0

4l

25 37

3t

33 32

962.53 635.66 429.75 67.r7 76.21 208.33 367.95 806.29 277.66 288.39 84.57 80.22 0

22.46 14.84 10.03 1.57 1.77 4.86 8.59 18.82 6.48 6.73

r.97

1.88 0

967.93 651.33 466.85 6t.17 76.21 42t.41 379.89 778.41 321.60 78.98

0 80.1 1

0.84

22.59 15.20 10.90 1.43 1.77 9.84 8.87 r8.17

7.51

L84 0 1.87 0.01

969.29 685.49 433.39 58.77 70.61 423.72 376.46 704.85 444.44 33.98

0 83.74

0

22.62

t6

10.11 1.37 1.65 9.89 8.79 16.45 r 0.37 0.8

0 L95

0 34

35 38

4284.73 100 4284.73 100 4284.73 r00

c5c lo4i hinh lopi hinh lop

Tir

k6t quA th5ng k6 clugc

voi

sg md ^h6a lorp

pht,

ma trfln chuy6n it6i c6c phri qua

2

giai ttopn 2000

-

2006

tl6 tlugc x6y drpg t4i bdng 3 vd ma

trfn

chuyrin tt6i c6c loai hinh lop phrl qua2 giai tloan 2006 -2009 ^et6 ilugc xdy

dpg

tAibiu;,g4:

Bang 3.'Ma trfn ^{bi6n clQng c6c} lopi hinh l6p phti thgc vflt giai tlo4n 2000

-

²⁰⁰⁶

236 ^{D.H. Mai lTqp chi Kna hqc DHQGHN, Khoa hgc Tq nhiAn od C6ng nghQ} 28 (2072) 233-238

15

1515 1516 1513 150 1541

t6

¹⁶¹⁵ 1616 1613 160 ¹⁶⁴¹

13 l3r5

1316 1313 130 1341

0 015 016 013 00

⁰⁴¹

4t 4tl5

4116

4ll3

410

4l4l

25

^{25t5 2516 2513 250 2541}

37

3715 3716 3713 370 3741

31

3115 3116 3113 310

3l4l

33

3315 3316 3313 330 ³³⁴¹

32

3215 32t6 3213 320 3241

34

3415 3416 3413 340 ³⁴⁴¹

35

3515 3516 3513 350 3541

38

3815 3816 3813 380 3841

t525 1537

l53l

¹⁵³³

r62s 1637 1631 1633

t325 1337

l33l

¹³³³

025 037 031

033

4t25 4t37

4t3l

4133

2525 2537 2531 2533 3725 3737 3731 ^3',133 3125 3137 3131 3133

3325 3337 3331 3333

322s 3237 3231 3233 3425 3437 3431 3433 3525 3537 3531 3533

3825 3837 3831 3833

1532 1534 1535 1538

1632 1634 1635 1638

1332 1334 1335 1338

032 034 035

⁰³⁸

4132 4134 4t35 4138

2532 2534 2535 2538 3732 3734 3735 3738 3132 3134 3135 3138

3332 3334 3335 3338

3232 3234 3235 3238 3432 3434 3435 3438 3532 3534 3535 3538

3832 3834 3835 3838 Chi thich: Theo c\t hd nftn md top phn ndn 2006, theo hing the hien md lop phti ndm 2000. Cdc 6 dtqc t6 ddn th€

hi€n cdc loqi top phi kh6ng thay d6i qua 2 thdi di€m ndm 2000vir 2006.

Ma

tin

^{chuyiSn d6i c6c lo4i hinh lop phri}

cria giai doqn2006-2009 cfing tuong

ty

nhu ma trfn cria giai dopn 2000-2006, ta c6 bdng 4 - Ma trfln bi6n dQng c6c loai hinh

lop pht

thgc v$t

Bang 5. SU bi6n dQng diQn tich l6p phri ttrgc vft xd Huong Son giai cloan 2000- 2006 (Don vi di€n tich: ha)

giai clo4n 2006-2009. C6c ma trfln d6u th€ hiQn

,

.r ,

^x

sp bi€n tlQng cd vC tr?ng th6i l6p phri vd dipn tich.

ME 38 0 0 0 0 0 0 0 0.84

0 0 0 0 ME

35 0 0 0 0 0 0 0 0 0 0 0

80.u MA

33 0 0 0 0 0 0 0 74.08 247.52

0 0 0 MA

4l

0 0 0 0 76.2

0 0 0 0 0 0 0 ME

l5

2000

MA

l6

ME l3

MA 0

ME 25

MA ME

3l

MA 32

nlm 2000 Ma ¹⁵

Ma 16

Me 13

Ma0 Me4l

Ma 25 Ma 37 Ma 3l Me 33

Md32 Me 34 Me 35 T6ng nAm

2006

962.53 0 0 0 0 5.40

0 0 0 0 0 0

0 596.7E

26.49 0 0 28.06

0 0 0 0 0 0

0 23.92 403.26

26.51 0 8.45

0 0 0 0 4.72

0 0 0 0 40.33

0 0 0 0 0 20.72

0 0.1I

0 t4.97

0 0 0 r66.43

0 5.04

0 160.50

74.47 0

0 0 0 0 0 0 367.96

6.t4 5.79 0 0 0

0 0 0 0 0 0 0 715.16

24.34 38.90 0 0

0 0 0 0.32

0 0 0 5.02

0 68.25

s.38 0

962.53 635.66 429.75

67. r7

76.21 208.3i 367.96 806.29 277.66

288.39 84.57

80.22

967.93 6st.i3 466.85 61.17 76.21 42t.41 379.89 778.41 91.60 78.98

8Q.tl 0.84

^4284.73

Trong

l*roing thoi

gian

tt n[m

2000 ^dtSn nem 2009 v6i ^c5c muc dich s& dpng vd c6c hinh thric hogt tlQng, khai th6c kh6c nhau

cia

con nguoi md c5c lo4i hinh cria lop phri itd c6 nhiing thay d6i, t6t

ci

nhiing thay d6i

niy

^{dAu dd} tlugc

ph6n tich rAt cg ^thC vA nguy€n nhin trong tirng giai tlo4n cu thi5. Sg bi6n dQng lop

pht

thyc v4t giai tlopn 2000 -2006 vd giai ^doan 2006

-2009

dugc thi5 hign d ma

trfn

bi6n ttQng diQn tich lop phri nong c6c bang 3, bang 4, bing 5 vd bing 6.

D.H. Mai lTqp chi Khoahoc DHQGHN, Kroahgc Tq nhi€n ^od C6ng nghQ 28 (2012) 233-238 237

Bdng 6. SU biiSn dQng diQn tich l6p pht thlrc vflt xd Huong Son giai tlogn 2006-2009 (Donvi di€n tfch: ha)

Mel5 Mal6 Mal3

MeO

Ma4l

Ma25 Mri37

MZ3l

Ma33 Me32 Md35 T6ngnlm2006

Mel5 967.93 0 0 0

⁰

Me

16 0

648.16

3.06 0

⁰

Ma

13 0

36.45 429.s8

0.83

⁰

Mao 0 0 0 s6.70

⁰

Ma4l 0 0 0 0

^70.6r

M62s 1.36 0.88 ^0.76 0.40

⁰

M37 0 0 0 0

⁰

Me3l 0 0 0 0

⁰

Ma33 0 0 0 0

⁰

Mld3200000

Me35 0 0 0 0.84

⁰

Me38 0 0 0 0

⁰

T6ne ntm 2009 969.29 685.49 433.39 58.77 70.61

0.12000 0000 0000 0000 5.60000

418.00 0 0

⁰

0

^{326.02 10.07 43.80}

0

50.33 620.18 107.90

0 0.1|

^{29.59 291.90}

0 0 45.00

⁰

0000 0000.84

423.72 376.46 704.85 444.44 33.98

83.74

^4284.73

00 00

00 0

^4.47

00 00 00 00

33.97 00

⁰

0

^79.27

00

967.93 651.33 466.85 61.17 76.21

42I.4l 379.89 778.41 i2 t.60

78.98 80.t I

0.84

fi.

^DA

xuil

^{m1t sd} gidi phap ldm tdng rj' Is che phil

r*ng

- NAng cao ning lgc qudn

lf

^{cho c6n b0 ldm}

cOng tac ^quan

lj,

bio vQ nmg

- Thuc hi€n t5t ^phSp luflt b6o v0 thi€n nhi€n

-

Tuy€n truyAn gi6o dpc n6ng cao

f

^thr?c

b6o vQ thi6n nhi6n cho

ngudi

ddn

vd

lfi6ch tham quan

- Khoanh nudi

bio

vg rimg, xric ti6n tai sinh rung tu nhi€n c6 tr6ng bi5 sung

- Sri dpng b6n viing tai nguy€n sinh

v|t

- Quy ho4ch vd ph6t tri€n du lich sinh th6i

4. K6t lu$n

Qua qu6 trinh thpc ^{hiQn dA} tai de thu dugc c6c k6t qud sau:

L

Huong Son

c6 6

ki6u tr4ng

thii

^thdm

thgc vflt tr€n can vd 1 ki6u trpng th6i thriy sinh

-

^{ngAp nudc, d6 ld: Rung rflm nhiQt}

^doi

^mua

mira thulng xanh cAy 16 rQng ph6t tri6n d thung lfing

vi

ch6n

nfi

^ct6

v6i;

Rung nhipt <loi mua mtra

thulng

xanh c6y 16 rQng ph6t tri6n tr€n

sudm nrii tl6 v6i; Rimg thua,

tring

cdy bgi vd g5 nho ph6t tri6n tr6n c6c dinh nrii it6 v6i

holc

d

sudn v6ch

nfi c6

<10 d6c

l6n;

Trdng c6 ph6t triiSn tr€n sudn, v6ch

nrii

d6

v6i;

Rimg thua, trdng cdy bui tr€n

nti

dAt; Rimg trdng; Thim thgc

vft

thriy sinh vd ng{p nudc.

2. Dd. x?ty

dpg

clugc c5c bdn d6 (vdi

ti

^l0

l:35000)

vd

c6c b6ng thting

k0

s6 fiQu bi6n

ctQng thAm thgc vflt, tt6

li: Bin

d6 hiQn trang thim thgc

vft

xd Huong Son nlm 2000; Bdn dO

hipn ^trar,rg thAm thgc

vft

xd Huong Scrn ndm

2006;

Bin ad

fri€n trqng thdm

thuc v0t

xd Huong Son ndm 2009;

Bin

d6 bi6n ^{dQng hiQn} trqng

thim

thgc

vft

giai cto4n 2000-2006; Bdn

AO Uiiin dQng hipn trqng thim thyc

vft

^{giai clopn}

2006-2009;

Bing

s6liQu vd dign tich timg thdm thpc v4t tai thdi elii5m ndm 2OOO,2006 vd 2009;

Ma

trfn

bi6n ^dQng dien tich

thim

thyc

vft

giai ttoan 2000-2006;

Ma

trdn bii5n dOng dien tich thim thpc

vft

^{giai doan 2006-2009.}

3. Dd m0

ti

chi ti6t c6c th6m thpc

vft,

vai trd ^cria tirng thim thyc vflt, ^phdn tfch c6c y6u tti gdy n€n su bi6n dQng diQn

tich

vd trpng thSi ttmg thAm thpc

vflt

4. Dd dSnh gi5 biCn clQng cria tung ^lcrp phri thyc

vft

theo hai giai tlo4n nghi€n cuu ^(2000- 2006 vd 2006-2009).

5. DiQn tich

cia

lop

phi

thyc v4t xd Huong Son chi6m

ti

^{19 lon, dac bipt} ld thdm thuc vflt

238 D.H. Mai /T4p chi Khoa hqc DHQGHN, Ktoa hqc Ty nhi€n od C6ng ngh€ 28 Q072) 233-238

nmg. Todn b0 di€n

tich

rimg thuQc

rimg

dac dpng do

Nhi

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UBND x6.Huong Son (201l). 86o c6o k6t qud v€ viQc th6ng k€ d6t dai ndm 201 l, Huong Son ngty 24 th6ng 12 n6m 201

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Dodn Huong Mai (2012), Nghi€n cr?u tla dang sinh hgc vd c6c hQ sinh th6i xd Huong Son, huyQn

Mi

Drlc, Hh NQi lam cq sd khoa hgc cho h th6i bAn hgc Khoa

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Assessment of vegetation cover dynamic in Huong Son commune, My Duc district, Hanoi

Doan Huong Mai

Faculty of Biologt, VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam

Vegetation plays an important role in human life. On the one hand,

it

provides the raw materials and products such as: wood, feed for livestock, materials of medicine, industial plants, fruit and nuts ... On the other hand,

it

has a large role in natural material cycle, in protecting people from natural disasters such as: floods, storms, protecting the soil from erosion, climate and water regime on the ground

.. .

The vegetation cover change has strongly affected on biodiversity. Forest protection in general and vegetation cover protection

in

Huong Son

in

particular are essential and have been concerned

by

the local authorities and scientific institutions

for

a long time. However, because

of

changing as well as being impacted, the succession process of Huong Son vegetation is continuously taking place and ratherly complicated, in which human impact plays a key role which changes the area

of vegetation types. Therefore, study on characteristic of forest status and the dynamic of vegetation tlpes in the region are very necessary in order to assess Huong Son vegetation diversity, causes and tends of vegetation change which

will

be reason to propose conservation and development solutions for this flora.

The study was conducted to research and evaluate the changes in vegetation cover in Huong Son commune, My Duc district, Hanoi period from 2000 to 2009, which found the cause of these changes in this area and propose the solutions to increase coverage.

Kqrwords: vegetation cover, dynamic, Huong Son (My Duc, Hanoi).