Moddai 121-i Kodeksi obi Jumhurii Tojikiston. Tadbirhoe, ki hifz, behtar gardidani holat va nizomi obro tamin mekunand
Tadbirhoe, ki hifzi obro az iflosu oludashavi va kamshavi, inchunin behtar gardidani holatu nizomi obro tamin mekunanad, inho meboshand:
-tekhnologi – tadbirhoe, ki ba sokhtmoni sistemai gardishi obi taminoti sanoati ob, obekthoi toza va bezarargardonii obi partov, tashkili ravandhoi tekhnologii obekti istehsoloti sanoati va kishovarzi ravona shudaandu kori ustuvori obekthoi toza va bezararkunandai obi partov, tashkili ravandhoi tekhnologi, ki paydoshavii obhoi iflosshudai partovro istisno mekunand, tamin menamoyand;
-meliorativii jangal va agrotekhniki – tadbirhoe meboshand, ki mustahkam kardani sohilhoi obekthoi ob, muhofizati onhoro az vayron va botloqshavi, inchunin mutadil va behtar gardidani nizomi tabii jorishavii obekthoi obro tamin mekunand;
-gidrotekhniki – tadbirhoe, ki baroi tasisi sistema va obekti gidrotekhnikii taminkunandai sharoiti musoidi istifodai ob va mustahkamii sohilho, inchunin dar mavridhoi zaruri tozakunii majroi daryoho, kanalho, qari juyborho, kulu obanborhoro az obovardhoyu tahshinhoi zararovar ravona karda shudaand;
-sanitariyu tekhniki – tadbirhoe, ki bezarar va besiroyatkunii obi partovi ba obekthoi ob partoftashavanda, inchunin hifzi sanitari va obodonii hududi nazdisohilii tahti faoliyati khojagi qarorgiriftaro tamin menamoyand;
-digar tadbirhoi imkonpazir, ki hifzi obro tamin namuda, ba behtar shudani holatu nizomi on musoidat mekunand.