One of its fundamental actions is based on the purchase of land of high ecological interest for its integral conservation:
| Estación biológica El Mas del Peraire. Tinença de Benifassà. Castellón. | |
| Deed of sale: | 20/12/1996 – 21/07/1997 |
| A/ Ref. Catastral: 12093A018000020000WD | Area: 0.516.136 m2 |
| B/ Ref. Catastral: 12093A018000030000WX | Area: 1.282.750 m2 |
| C/ Ref. Catastral: 12093A019000060000WK | Area: 0.459.495 m2 |
| La Vall de Gallinera. Alicante. | |
| Deed of sale: | 05/05/2008 |
| Ref. Catastral: 03136A007008650000ZI | Area: 02.787 m2. |
| Sierra de Bernia. Alicante. | |
| Deed of sale: | 09/06/2008 |
| A/ Ref. Catastral: 03041A052005060000JI | Area: 13.789 m2. |
| B/ Ref. Catastral: 03041A052001470000JM | Area: 05.559 m2. |
| La Vall de Gallinera. Alicante. | |
| Deed of sale: | 01/08/2008 |
| Ref. Catastral: 03136A007008120000ZA | Area: 05.863 m2. |
| La Vall de Gallinera. Alicante. | |
| Deed of sale: | 26/09/2008 |
| A/ Ref. Catastral: 03136A007008610000ZK | Area: 02.269 m2. |
| B/ Ref. Catastral: 03136A007008680000ZS | Area: 02.548 m2. |
| La Vall de Gallinera. Alicante. | |
| Deed of sale: | 13/02/2009 |
| Ref. Catastral: 03136A007006680000ZR | Area: 12.162 m2. |
| Valle del río Mijares. Yátova. Valencia. | |
| Deed of sale: | 22/12/2009 |
| Ref. Catastral: 46263A015000360000KO | Area: 31.480 m2. |
| La marjal de Almenara. La Llosa. Castellón. | |
| Deed of sale: | 28/02/2013 |
| Ref. Catastral: 12074A006000570000LI | Area: 61.270 m2. |
| Parcela en La Casella. Alzira. Valencia. | |
| Deed of sale: | 18/06/2013 |
| Ref. Catastral: 46017A055005410000IU | Area: 33.153 m2. |
| La Vall de Laguar. Alicante. | |
| Deed of sale: | 31/07/2013 |
| Ref. Catastral: 03137A001001840000WU, y 8 más | Area: 132.757 m2. |
| Benimantell. Alicante. | |
| Escritura de compraventa: | 20/11/2014 |
| Ref. Catastral: 03037A005000340000DQ | Area: 36.437 m2. |
| Serra d’Espadà. Castellón. | |
| Escritura de Fusión por absorción de la Fundación Serra Espadà | 23/06/2016 |
| Fondeguilla | Area: 302.096 m2 |
| Eslida | Area: 334.738 m2 |
| Artana | Area: 379.527 m2 |
| Mújica. Vizcaya | |
| Deed for sale: | 18/10/2018 |
| A/ Ref. Catastral: 067022032 | Area: 21.614 m2 |
| B/ Ref. Catastral: 067022034 | Area: 2.638 m2 |
| C/ Ref. Catastral: 067022035 | Area: 1.030 m2 |
| D/ Ref. Catastral: 067022038 | Area: 44.394 m2 |
| E/ Ref. Catastral: 067022048 | Area: 77.835 m2 |
| F/ Ref. Catastral: 067022049 | Area: 8.646 m2 |
| G/ Ref. Catastral: 0670241000000000 | Area: 4.414 m2 |
| Villacañas (Toledo) Laguna de la Redondilla | |
| Deed of sale: | 22/01/2019 |
| A/ Ref. Catastral: 45186A064001000000DR | Area: 30.048 m2 |
| B/ Ref. Catastral: 45186A064001010000DD | Area: 5.578 m2 |