(IP 
  (PP-PRP 
    (P 为)
                    
    (IP 
      (NP-SBJ 
        (-NONE- *PRO*))
                    
      (VP 
        (VV 养活)
                    
        (NP-OBJ 
          (NN 单位)))))
                    
  (PU ，)
                    
  (NP-PN-SBJ 
    (NN 退辅会))
                    
  (VP 
    (ADVP 
      (AD 遂))
                    
    (VP 
      (VP 
        (PP-PRP 
          (P 以)
                    
          (IP 
            (NP-SBJ 
              (-NONE- *PRO*))
                    
            (VP 
              (PU 「)
                    
              (VP 
                (VV 清除)
                    
                (NP-OBJ 
                  (DNP 
                    (LCP 
                      (NP 
                        (NN 林地))
                    
                      (LC 上))
                    
                    (DEG 的))
                    
                  (CP 
                    (WHNP-1 
                      (-NONE- *OP*))
                    
                    (IP 
                      (NP-SBJ 
                        (-NONE- *T*-1))
                    
                      (VP 
                        (VV 枯立))))
                    
                  (NP 
                    (NN 倒木))))
                    
              (PU ，)
                    
              (VP 
                (VP 
                  (VV 空出)
                    
                  (NP-OBJ 
                    (NN 空间)))
                    
                (VP 
                  (VV 让)
                    
                  (NP-OBJ 
                    (NN 幼木))
                    
                  (IP 
                    (NP-SBJ 
                      (-NONE- *PRO*))
                    
                    (VP 
                      (VV 成长)))))
                    
              (PU 」))))
                    
        (VP 
          (VV 为)
                    
          (NP-OBJ 
            (NN 由))))
                    
      (PU ，)
                    
      (VP 
        (VV 继续)
                    
        (VP 
          (VV 伐木))))))
arg0: 
                    *PRO* 
                
arg1: 
                    空间