tailieunhanh - Evapotranspiration covers for landfills and waste sites - Chapter 5

Mỗi thoát hơi nước (ET) bao gồm bãi rác nên Đáp ứng các yêu cầu của trang web, điều này Yêu cầu tích hợp các khái niệm và nguyên tắc từ đất và khoa học thực vật cũng như các lĩnh vực kỹ thuật. Bởi vì có tiềm năng là sự kết hợp MỘT SỐ của công nghệ, nó là có thể để Cung cấp một trải đó đáp ứng các tình huống duy nhất tại một trang web đặc biệt. Tăng trưởng thực vật cần thiết để mạnh mẽ IS Đáp ứng các yêu cầu đối với một trải. | 5 Basic Technology Each evapotranspiration ET landfill cover should satisfy the requirements of the site this requires integration of concepts and principles from soil and plant science as well as engineering fields. Because there are several potential combinations of the technology it is possible to provide a cover that meets the unique situation at a particular site. Robust plant growth is necessary to satisfy the requirements for a landfill cover but some factors may limit plant growth and effectiveness. Fortunately it is relatively easy and economical to remove control or manage limitations to plant growth in constructed soils such as in a landfill cover. However removal of limitations requires knowledge of soil properties the principles of plant growth and their interactions with other factors. This chapter explores basic concepts that govern success of the ET landfill cover it does not cover each scientific topic in detail. Soil water balance and hydrology are basic technology and they incorporate basic scientific principles they are discussed separately in Chapter 6. Appendix A contains a reference bibliography to assist the reader in finding additional information if needed. SOIL Table contains a list of soil properties that are important to the success of ET landfill covers and this book contains a discussion of the most important of these. Hillel 1998 Marshall et al. 1996 Carter 1993 and SSSA 1997 more fully describe soil properties. If necessary the landfill owner may change the plants growing on an ET cover after the cover is complete. The landfill owner may improve soil with fertilizer lime or compost after cover construction however changing soil physical properties or nutrient-holding capacity after construction is complete is very costly. It is important to understand the soil. Soil Physical Properties Soil physical properties are important to successful application of the ET landfill cover but construction of an ET landfill cover .