( ( A ( ( relatively long ) ( drought period ) ) ) ( ( ( ( leads ( to ( ( ( water stress ) and ) ( ( the closure ) ( of ( ( the ( plants ' ) ) stomata ) ) ) ) ) ) , ) ( to ( ( save water ) ( from ( evaporation ( -LRB- ( ( ( ( ( Amlin & ) Rood ) , ) 2002 ) -RRB- ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (ADJP (RB relatively) (JJ long)) (NN drought) (NN period)) (VP (VBZ leads) (PP (TO to) (NP (NP (NN water) (NN stress)) (CC and) (NP (NP (DT the) (NN closure)) (PP (IN of) (NP (NP (DT the) (NNS plants) (POS ')) (NN stomata)))))) (, ,) (S (VP (TO to) (VP (VB save) (NP (NN water)) (PP (IN from) (NP (NP (NN evaporation)) (PRN (-LRB- -LRB-) (NP (NNP Amlin) (CC &) (NNP Rood)) (, ,) (NP (CD 2002)) (-RRB- -RRB-)))))))) (. .)))
A relatively long drought period leads to water stress and the closure of the plants' stomata, to save water from evaporation (Amlin & Rood, 2002 ).
(ROOT (S (SBAR (IN Because) (S (NP (NNS trees)) (VP (VBP add) (NP (NN water) (NN vapor)) (PP (TO to) (NP (NN air)))))) (, ,) (S (VP (VBG cutting) (PRT (RP down)) (NP (NNS forests)))) (VP (VBZ leads) (PP (TO to) (NP (NP (JJR longer) (NNS periods)) (PP (IN of) (NP (NN drought)))))) (. .)))